Archives for August 8, 2024

Issued at 500 PM EDT Thu Aug 08 2024

000
WTNT34 KNHC 082031
TCPAT4
 
BULLETIN
Tropical Depression Debby Advisory Number  26
NWS National Hurricane Center Miami FL       AL042024
500 PM EDT Thu Aug 08 2024
 
...MAJOR FLOOD THREAT CONTINUES FOR PORTIONS OF THE CAROLINAS AND
WESTERN VIRGINIA...
...FUTURE ADVISORIES WILL BE ISSUED BY THE WEATHER PREDICTION
CENTER...
 
 
SUMMARY OF 500 PM EDT...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...35.1N 80.2W
ABOUT 45 MI...75 KM E OF CHARLOTTE NORTH CAROLINA
ABOUT 95 MI...155 KM WSW OF RALEIGH NORTH CAROLINA
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...NNW OR 345 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...998 MB...29.47 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
 
All Tropical Storm Warnings have been discontinued.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
 
There are no coastal watches or warnings in effect.
 
 
DISCUSSION AND OUTLOOK
----------------------
At 500 PM EDT (2100 UTC), the center of Tropical Depression Debby
was located inland near latitude 35.1 North, longitude 80.2 West. 
The depression is moving toward the north-northwest near 10 mph (17
km/h).  A faster northward or north-northeastward motion is 
expected during the next day or two.
 
Maximum sustained winds are near 35 mph (55 km/h) with higher gusts.
Little change in strength is forecast during the next couple of 
days, but Debby is expected to become a post-tropical cyclone on 
Friday.
 
The estimated minimum central pressure based on surface 
observations is 998 mb (29.47 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
Key messages for Debby can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDAT4 and WMO header WTNT44 KNHC.
 
WIND: Wind gusts to tropical-storm-force could occur for a few more
hours along portions of the North Carolina coast.
 
STORM SURGE: Coastal flooding is possible in the Cape Fear, Neuse, 
and Pamlico Rivers...1 to 3 ft.
 
For a complete depiction of areas at risk of storm surge inundation,
please see the National Weather Service Peak Storm Surge Graphic,
available at hurricanes.gov/graphics_at4.shtml?peakSurge.
 
RAINFALL: Debby is expected to produce an additional 3 to 6 inches 
of rainfall with locally higher amounts, across portions of 
southeastern North Carolina leading to maximum storm total amounts 
as high as 15 inches.  Additional rainfall of 1 to 3 inches over 
portions of eastern South Carolina will bring maximum storm total 
amounts as high as 20 to 25 inches. Considerable flooding is 
expected across portions of eastern South Carolina and southeast 
North Carolina through Friday.

From central North Carolina northward across portions of Virginia, 3 
to 7 inches with local amounts to 10 inches, are expected through 
Friday. This rainfall will likely result in areas of considerable to 
locally catastrophic flash and urban flooding, especially in the 
terrain of western Virginia, with river flooding also possible.

From portions of Maryland north through Upstate New York and 
Vermont, 2 to 4 inches, with local amounts to 6 inches, are expected 
through Friday night. This will likely result in areas of 
considerable flash and urban flooding as well as river flooding.

For the remainder of northern New England, 1 to 3 inches, with 
local amounts to 4 inches, are expected into Saturday.  Scattered 
instances of flash flooding are possible.
  
For a complete depiction of forecast rainfall and flash flooding 
associated with  Debby, please see the National Weather Service 
Storm Total Rainfall Graphic, available at 
hurricanes.gov/graphics_at4.shtml?rainqpf and the Flash Flood Risk 
graphic at hurricanes.gov/graphics_at4.shtml?ero.  For a list of 
rainfall observations (and wind reports) associated this storm, see 
the companion storm summary at WBCSCCNS4 with the WMO header ACUS44 
KWBC or at the following link:
www.wpc.ncep.noaa.gov/discussions/nfdscc4.html. 
 
TORNADOES: A few tornadoes may occur through tonight from central
and eastern North Carolina into central and southeast Virginia.  
The threat for tornadoes will shift northward into parts of New 
Jersey and eastern Pennsylvania on Friday.
 
SURF:  Large swells will continue to affect the Southeast U.S.
coast for another day or so. These conditions are likely to
cause life-threatening surf and rip current conditions. Please
consult products from your local weather office.
 
 
NEXT ADVISORY
-------------
This is the last public advisory issued by the National Hurricane
Center on Debby.  Future information on this system can be 
found in Public Advisories issued by the Weather Prediction Center 
beginning at 1100 PM EDT, under AWIPS header TCPAT4, WMO 
header WTNT34 KWNH, and on the web at www.hurricanes.gov.

Rainfall forecasts for the United States can always be found at 
https://www.wpc.ncep.noaa.gov/qpf/qpf2.shtml 
and outlooks of flash flood risks can be found at 
https://www.wpc.ncep.noaa.gov/qpf/excessive_rainfall_outlook_ero.php
.
 
$$
Forecaster Cangialosi
 

Issued at 2100 UTC THU AUG 08 2024

000
WTNT24 KNHC 082031
TCMAT4
 
TROPICAL DEPRESSION DEBBY FORECAST/ADVISORY NUMBER  26
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL042024
2100 UTC THU AUG 08 2024
 
TROPICAL DEPRESSION CENTER LOCATED NEAR 35.1N  80.2W AT 08/2100Z
POSITION ACCURATE WITHIN  30 NM
 
PRESENT MOVEMENT TOWARD THE NORTH-NORTHWEST OR 345 DEGREES AT   9 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE  998 MB
MAX SUSTAINED WINDS  30 KT WITH GUSTS TO  40 KT.
12 FT SEAS..300NE 300SE   0SW   0NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT.  RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.
 
REPEAT...CENTER LOCATED NEAR 35.1N  80.2W AT 08/2100Z...INLAND
AT 08/1800Z CENTER WAS LOCATED NEAR 34.8N  80.2W...INLAND
 
FORECAST VALID 09/0600Z 37.1N  79.5W...INLAND
MAX WIND  30 KT...GUSTS  40 KT.
 
FORECAST VALID 09/1800Z 41.2N  76.7W...POST-TROP/EXTRATROP
MAX WIND  30 KT...GUSTS  40 KT.
 
FORECAST VALID 10/0600Z 45.7N  71.1W...POST-TROP/EXTRATROP
MAX WIND  30 KT...GUSTS  40 KT.
 
FORECAST VALID 10/1800Z 48.9N  62.8W...POST-TROP/EXTRATROP
MAX WIND  30 KT...GUSTS  40 KT.
 
FORECAST VALID 11/0600Z...DISSIPATED
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 35.1N  80.2W
 
THIS IS THE LAST FORECAST/ADVISORY ISSUED BY THE NATIONAL HURRICANE 
CENTER ON DEBBY.  FUTURE INFORMATION ON DEBBY CAN BE FOUND IN 
FORECAST/ADVISORIES ISSUED BY THE WEATHER PREDICTION CENTER 
BEGINNING AT 0300 UTC, UNDER AWIPS HEADER TCMAT4, WMO HEADER 
WTNT24 KWNH, AND ON THE WEB AT WWW.HURRICANES.GOV.

RAINFALL FORECASTS FOR THE UNITED STATES CAN ALWAYS BE FOUND AT 
HTTPS://WWW.WPC.NCEP.NOAA.GOV/QPF/QPF2.SHTML 
AND OUTLOOKS OF FLASH FLOOD RISKS CAN BE FOUND AT 
HTTPS://WWW.WPC.NCEP.NOAA.GOV/QPF/EXCESSIVE_RAINFALL_OUTLOOK_ERO.PHP
.
 
$$
FORECASTER CANGIALOSI
 
 

Issued at 200 PM EDT Thu Aug 08 2024

000
WTNT34 KNHC 081746
TCPAT4
 
BULLETIN
Tropical Storm Debby Intermediate Advisory Number 25A
NWS National Hurricane Center Miami FL       AL042024
200 PM EDT Thu Aug 08 2024
 
...MAJOR FLOOD THREAT CONTINUES FOR PORTIONS OF THE CAROLINAS AND
WESTERN VIRGINIA...
 
 
SUMMARY OF 200 PM EDT...1800 UTC...INFORMATION
----------------------------------------------
LOCATION...34.8N 80.2W
ABOUT 55 MI...85 KM ESE OF CHARLOTTE NORTH CAROLINA
ABOUT 100 MI...175 KM SW OF RALEIGH NORTH CAROLINA
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...NNW OR 345 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...997 MB...29.44 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
 
The Tropical Storm Warning south of Surf City has been discontinued.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
 
A Tropical Storm Warning is in effect for...
* Surf City to Ocracoke Inlet, North Carolina
 
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case during the
next few hours.
 
For storm information specific to your area, including possible
inland watches and warnings, please monitor products issued by your
local National Weather Service forecast office.
 
 
DISCUSSION AND OUTLOOK
----------------------
At 200 PM EDT (1800 UTC), the center of Tropical Storm Debby was
located near inland latitude 34.8 North, longitude 80.2 West. Debby 
is moving toward the north-northwest near 10 mph (17 km/h). The 
storm is expected to accelerate toward the north across central 
North Carolina through tonight. Debby is then expected to move 
faster toward the northeast across the U.S. Mid-Atlantic and 
Northeast on Friday and Atlantic Canada on Saturday.
 
Maximum sustained winds are near 40 mph (65 km/h) with higher 
gusts. Continued weakening is forecast, and Debby is likely to 
become a tropical depression this afternoon or evening. Debby 
should then merge with a front and become extratropical on
Friday.
 
Tropical-storm-force winds extend outward up to 195 miles (315 km)
east of the center.
 
The estimated minimum central pressure based on surface
observations is 997 mb (29.44 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
Key messages for Debby can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDAT4 and WMO header WTNT44 KNHC.
 
WIND: Tropical storm conditions are expected to continue along 
portions of coastal North Carolina within the tropical storm 
warning area during the few hours.
 
STORM SURGE: The combination of storm surge and tide will cause
normally dry areas near the coast to be flooded by rising waters
moving inland from the shoreline. The water could reach the
following heights above ground somewhere in the indicated areas if
the peak surge occurs at the time of high tide...
 
Cape Fear to Ocracoke Inlet including the Neuse and Pamlico
Rivers...1 to 3 ft
 
For a complete depiction of areas at risk of storm surge inundation,
please see the National Weather Service Peak Storm Surge Graphic,
available at hurricanes.gov/graphics_at4.shtml?peakSurge.
 
RAINFALL: Debby is expected to produce an additional 3 to 6 inches
of rainfall with locally higher amounts, across portions of
southeastern North Carolina leading to maximum storm total amounts
as high as 15 inches.  Additional rainfall of 1 to 3 inches over
portions of eastern South Carolina will bring maximum storm total
amounts as high as 20 to 25 inches. Considerable flooding is
expected across portions of eastern South Carolina and southeast
North Carolina through Friday.
 
From central North Carolina northward across portions of Virginia, 3
to 7 inches with local amounts to 10 inches, are expected through
Friday. This rainfall will likely result in areas of considerable to
locally catastrophic flash and urban flooding, especially in the
terrain of western Virginia, with river flooding also possible.
 
From portions of Maryland north through Upstate New York and
Vermont, 2 to 4 inches, with local amounts to 6 inches, are expected
through Friday night. This will likely result in areas of
considerable flash and urban flooding as well as river flooding.
 
For the remainder of northern New England, 1 to 3 inches, with
local amounts to 4 inches, are expected into Saturday.  Scattered
instances of flash flooding are possible.
 
For a complete depiction of forecast rainfall and flash flooding
associated with Debby, please see the National Weather Service
Storm Total Rainfall Graphic, available at
hurricanes.gov/graphics_at4.shtml?rainqpf and the Flash Flood Risk
graphic at hurricanes.gov/graphics_at4.shtml?ero.  For a list of
rainfall observations (and wind reports) associated with this
storm, see the companion storm summary at WBCSCCNS4 with the WMO
header ACUS44 KWBC or at the following link:
www.wpc.ncep.noaa.gov/discussions/nfdscc4.html.
 
TORNADOES: A few tornadoes may occur today and tonight from central
and eastern North Carolina into central and southeast Virginia.
 
SURF:  Large swells will continue to affect the Southeast U.S.
coast for another day or so. These conditions are likely to
cause life-threatening surf and rip current conditions. Please
consult products from your local weather office.
 
 
NEXT ADVISORY
-------------
Next complete advisory at 500 PM EDT.
 
$$
Forecaster Cangialosi
 

Issued at 1100 AM EDT Thu Aug 08 2024

000
WTNT34 KNHC 081441
TCPAT4
 
BULLETIN
Tropical Storm Debby Advisory Number  25
NWS National Hurricane Center Miami FL       AL042024
1100 AM EDT Thu Aug 08 2024
 
...MAJOR FLOOD THREAT CONTINUES FOR PORTIONS OF THE CAROLINAS AND
WESTERN VIRGINIA AS DEBBY MOVES FARTHER INLAND...
 
 
SUMMARY OF 1100 AM EDT...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...34.5N 79.9W
ABOUT 80 MI...125 KM SE OF CHARLOTTE NORTH CAROLINA
ABOUT 110 MI...180 KM SW OF RALEIGH NORTH CAROLINA
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...NNW OR 345 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...996 MB...29.42 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
 
The Tropical Storm Warning from South Santee River to Murrells
Inlet has been discontinued.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
 
A Tropical Storm Warning is in effect for...
* North of Murrells Inlet, South Carolina to Ocracoke Inlet,
North Carolina
 
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case during the
next several hours.
 
For storm information specific to your area, including possible
inland watches and warnings, please monitor products issued by your
local National Weather Service forecast office.
 
 
DISCUSSION AND OUTLOOK
----------------------
At 1100 AM EDT (1500 UTC), the center of Tropical Storm Debby was
located near latitude 34.5 North, longitude 79.9 West. Debby is
moving toward the north-northwest near 10 mph (17 km/h). The storm
is expected to accelerate toward the north across central North
Carolina through tonight. Debby is then expected to move faster
toward the northeast across the U.S. Mid-Atlantic and Northeast on
Friday and Atlantic Canada on Saturday.
 
Maximum sustained winds have decreased to near 40 mph (65 km/h) 
with higher gusts. Continued weakening is forecast, and Debby is 
likely to become a tropical depression this afternoon or evening. 
Debby should then merge with a front and become extratropical on 
Friday.
 
Tropical-storm-force winds extend outward up to 195 miles (315 km)
from the center.
 
The estimated minimum central pressure based on surface 
observations is 996 mb (29.42 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
Key messages for Debby can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDAT4 and WMO header WTNT44 KNHC.
 
WIND: Tropical storm conditions are expected to continue along the
coast of northeastern South Carolina and portions of coastal North
Carolina within the tropical storm warning area during the next
several hours.
 
STORM SURGE: The combination of storm surge and tide will cause
normally dry areas near the coast to be flooded by rising waters
moving inland from the shoreline. The water could reach the
following heights above ground somewhere in the indicated areas if
the peak surge occurs at the time of high tide...
 
Cape Fear to Ocracoke Inlet including the Neuse and Pamlico
Rivers...1 to 3 ft
 
For a complete depiction of areas at risk of storm surge inundation,
please see the National Weather Service Peak Storm Surge Graphic,
available at hurricanes.gov/graphics_at4.shtml?peakSurge.
 
RAINFALL: Debby is expected to produce an additional 3 to 6 inches
of rainfall with locally higher amounts, across portions of
southeastern North Carolina leading to maximum storm total amounts
as high as 15 inches.  Additional rainfall of 1 to 3 inches over
portions of eastern South Carolina will bring maximum storm total
amounts as high as 20 to 25 inches. Considerable flooding is
expected across portions of eastern South Carolina and southeast
North Carolina through Friday.
 
From central North Carolina northward across portions of Virginia, 3
to 7 inches with local amounts to 10 inches, are expected through
Friday. This rainfall will likely result in areas of considerable to
locally catastrophic flash and urban flooding, especially in the
terrain of western Virginia, with river flooding also possible.
 
From portions of Maryland north through Upstate New York and
Vermont, 2 to 4 inches, with local amounts to 6 inches, are expected
through Friday night. This will likely result in areas of
considerable flash and urban flooding as well as river flooding.
 
For the remainder of northern New England, 1 to 3 inches, with
local amounts to 4 inches, are expected into Saturday.  Scattered
instances of flash flooding are possible.
 
For a complete depiction of forecast rainfall and flash flooding
associated with Debby, please see the National Weather Service
Storm Total Rainfall Graphic, available at
hurricanes.gov/graphics_at4.shtml?rainqpf and the Flash Flood Risk
graphic at hurricanes.gov/graphics_at4.shtml?ero.  For a list of
rainfall observations (and wind reports) associated with this
storm, see the companion storm summary at WBCSCCNS4 with the WMO
header ACUS44 KWBC or at the following link:
www.wpc.ncep.noaa.gov/discussions/nfdscc4.html.
 
TORNADOES: A few tornadoes may occur today and tonight from central
and eastern North Carolina into central and southeast Virginia.
 
SURF:  Large swells will continue to affect the Southeast U.S.
coast for another day or two. These conditions are likely to
cause life-threatening surf and rip current conditions. Please
consult products from your local weather office.
 
 
NEXT ADVISORY
-------------
Next intermediate advisory at 200 PM EDT.
Next complete advisory at 500 PM EDT.
 
$$
Forecaster Hagen/Cangialosi
 

Issued at 1500 UTC THU AUG 08 2024

000
WTNT24 KNHC 081441
TCMAT4
 
TROPICAL STORM DEBBY FORECAST/ADVISORY NUMBER  25
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL042024
1500 UTC THU AUG 08 2024
 
TROPICAL STORM CENTER LOCATED NEAR 34.5N  79.9W AT 08/1500Z
POSITION ACCURATE WITHIN  25 NM
 
PRESENT MOVEMENT TOWARD THE NORTH-NORTHWEST OR 345 DEGREES AT   9 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE  996 MB
MAX SUSTAINED WINDS  35 KT WITH GUSTS TO  45 KT.
34 KT.......150NE 170SE   0SW   0NW.
12 FT SEAS..300NE 270SE   0SW   0NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT.  RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.
 
REPEAT...CENTER LOCATED NEAR 34.5N  79.9W AT 08/1500Z
AT 08/1200Z CENTER WAS LOCATED NEAR 34.0N  79.9W
 
FORECAST VALID 09/0000Z 35.8N  79.9W...INLAND
MAX WIND  30 KT...GUSTS  40 KT.
 
FORECAST VALID 09/1200Z 38.7N  78.8W...POST-TROP/EXTRATROP
MAX WIND  30 KT...GUSTS  40 KT.
 
FORECAST VALID 10/0000Z 42.8N  75.0W...POST-TROP/EXTRATROP
MAX WIND  30 KT...GUSTS  40 KT.
 
FORECAST VALID 10/1200Z 47.0N  69.3W...POST-TROP/EXTRATROP
MAX WIND  30 KT...GUSTS  40 KT.
 
FORECAST VALID 11/0000Z 50.7N  61.9W...POST-TROP/EXTRATROP
MAX WIND  30 KT...GUSTS  40 KT.
 
FORECAST VALID 11/1200Z...DISSIPATED
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 34.5N  79.9W
 
INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 08/1800Z
 
NEXT ADVISORY AT 08/2100Z
 
$$
FORECASTER HAGEN/CANGIALOSI
 
 

Issued at 1100 AM EDT Thu Aug 08 2024

000
WTNT44 KNHC 081442
TCDAT4
 
Tropical Storm Debby Discussion Number  25
NWS National Hurricane Center Miami FL       AL042024
1100 AM EDT Thu Aug 08 2024
 
Debby continues to move farther inland with the center now located
over northern South Carolina.  Surface observations and radar data
indicate that the strongest winds are likely occurring near the
coast and just offshore of southern North Carolina.  The highest
sustained winds during the past couple of hours from reliable
surface observation sites are near 30 kt with higher gusts.  Based
on the decreasing observed wind speeds, the initial intensity is 
lowered to 35 kt for this advisory.  By far, the most significant 
threat with Debby continues to be flash flooding from heavy 
rainfall.
 
Debby is starting to accelerate toward the north-northwest, with the 
current motion estimated at 345/9-kt.  A ridge that is currently 
strengthening over the western Atlantic will cause Debby to 
accelerate northward, moving across central North Carolina this 
evening.  Then, a deep-layer trough will approach the Great Lakes 
region on Friday, which will cause Debby to accelerate northeastward 
over the Mid-Atlantic and Northeast U.S. Friday and Friday night and 
then over Atlantic Canada on Saturday.  There are only minor changes 
to the track forecast, hedging toward the latest consensus models.
 
Debby should continue to weaken as it moves farther inland, and most 
of the models indicate that the winds near the coast should decrease 
a bit more later today.  Debby is expected to weaken to a tropical 
depression by this afternoon or evening.  Model phase space diagrams 
show that Debby should complete transition to an extratropical 
cyclone in about 24 to 30 h.  The current satellite imagery shows 
that Debby is already starting to interact with the jet stream, 
which extends toward the east-northeast over the North Atlantic. 
Debby is now expected to complete extratropical transition in about 
24 h as the cyclone merges with a cold front while over the 
mid-Atlantic states.  Beyond Friday, models show a post-tropical 
Debby becoming extremely elongated along the cold front, which will 
eventually lead to dissipation.  The new NHC forecast has Debby 
dissipating Sunday morning, but that could occur sooner.

 
Key Messages:
 
1. Heavy rainfall across portions of the Carolinas is expected to
persist through today along with areas of considerable flooding.
Heavy rainfall will also result in considerable to locally
catastrophic flooding impacts across portions of the Mid-Atlantic
States and Northeast through Saturday morning.
 
2. Tropical storm conditions will continue for several more hours in
the Tropical Storm Warning area along the coast of northeastern
South Carolina and portions of North Carolina.
 
3. Coastal flooding due to storm surge is likely to continue along
portions of the North Carolina coastline for several more hours.
 
 
FORECAST POSITIONS AND MAX WINDS
 
INIT  08/1500Z 34.5N  79.9W   35 KT  40 MPH...INLAND
 12H  09/0000Z 35.8N  79.9W   30 KT  35 MPH...INLAND
 24H  09/1200Z 38.7N  78.8W   30 KT  35 MPH...POST-TROP/EXTRATROP
 36H  10/0000Z 42.8N  75.0W   30 KT  35 MPH...POST-TROP/EXTRATROP
 48H  10/1200Z 47.0N  69.3W   30 KT  35 MPH...POST-TROP/EXTRATROP
 60H  11/0000Z 50.7N  61.9W   30 KT  35 MPH...POST-TROP/EXTRATROP
 72H  11/1200Z...DISSIPATED
 
$$
Forecaster Hagen/Cangialosi
 

Issued at 800 AM EDT Thu Aug 08 2024

000
WTNT34 KNHC 081152 CCA
TCPAT4
 
BULLETIN
Tropical Storm Debby Intermediate Advisory Number 24A...Corrected
NWS National Hurricane Center Miami FL       AL042024
800 AM EDT Thu Aug 08 2024
 
...DEBBY MOVES FARTHER INLAND OVER SOUTH CAROLINA...
...MAJOR FLOOD THREAT CONTINUES FOR PORTIONS OF THE CAROLINAS AND
WESTERN VIRGINIA...

Corrected Maximum Sustained Winds in Summary Section
 
SUMMARY OF 800 AM EDT...1200 UTC...INFORMATION
----------------------------------------------
LOCATION...34.1N 79.9W
ABOUT 65 MI...100 KM WNW OF MYRTLE BEACH SOUTH CAROLINA
ABOUT 90 MI...145 KM N OF CHARLESTON SOUTH CAROLINA
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H
PRESENT MOVEMENT...NW OR 325 DEGREES AT 7 MPH...11 KM/H
MINIMUM CENTRAL PRESSURE...995 MB...29.38 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
 
None
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
 
A Tropical Storm Warning is in effect for...
* North of South Santee River, South Carolina to Ocracoke Inlet,
North Carolina
 
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case during the
next 12 hours.
 
For storm information specific to your area, including possible
inland watches and warnings, please monitor products issued by your
local National Weather Service forecast office.
 
 
DISCUSSION AND OUTLOOK
----------------------
At 800 AM EDT (1200 UTC), the center of Tropical Storm Debby was
located inland over South Carolina near latitude 34.1 North,
longitude 79.9 West.  Debby is moving toward the northwest near 7
mph (11 km/h).  The storm is expected to accelerate toward the
north-northwest and north across eastern South Carolina and central
North Carolina through tonight.  Debby is then expected to move
faster toward the northeast across the U.S. Mid-Atlantic and
Northeast on Friday and Atlantic Canada on Saturday.
 
Maximum sustained winds are near 45 mph (75 km/h) with higher
gusts. Continued weakening is forecast during the next day or so, 
and Debby is likely to become a tropical depression this 
afternoon or evening. Debby should then merge with a front and 
become extratropical on Friday.
 
Tropical-storm-force winds extend outward up to 185 miles (295 km)
to the east of the center.  A sustained wind of 36 mph (57 km/h) and
a gust to 39 mph (63 km/h) was recently reported at Cape Lookout,
North Carolina.
 
The estimated minimum central pressure based on surface 
observations is 995 mb (29.38 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
Key messages for Debby can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDAT4 and WMO header WTNT44 KNHC.
 
WIND: Tropical storm conditions are expected to continue along the
coasts of South Carolina and North Carolina within the tropical
storm warning area for much of the day.
 
STORM SURGE: The combination of storm surge and tide will cause
normally dry areas near the coast to be flooded by rising waters
moving inland from the shoreline. The water could reach the
following heights above ground somewhere in the indicated areas if
the peak surge occurs at the time of high tide...
 
South Santee River to Ocracoke Inlet including the Neuse and
Pamlico Rivers...1 to 3 ft
 
For a complete depiction of areas at risk of storm surge inundation,
please see the National Weather Service Peak Storm Surge Graphic,
available at hurricanes.gov/graphics_at4.shtml?peakSurge.
 
RAINFALL: Debby is expected to produce an additional 3 to 6 inches
of rainfall with locally higher amounts, across portions of
southeastern North Carolina leading to maximum storm total amounts
as high as 15 inches.  Additional rainfall of 1 to 3 inches over
portions of eastern South Carolina will bring maximum storm total
amounts as high as 20 to 25 inches. Considerable flooding is
expected across portions of eastern South Carolina and southeast
North Carolina through Friday.
 
From central North Carolina northward across portions of Virginia, 3
to 7 inches with local amounts to 10 inches, are expected through
Friday. This rainfall will likely result in areas of considerable
flash and urban flooding, with river flooding possible.
 
From portions of Maryland north through Upstate New York and
Vermont, 2 to 4 inches, with local amounts to 6 inches, are expected
through Friday night. This will likely result in areas of
considerable flash and urban flooding as well as river flooding.
 
For a complete depiction of forecast rainfall and flash flooding
associated with  Debby, please see the National Weather Service
Storm Total Rainfall Graphic, available at
hurricanes.gov/graphics_at4.shtml?rainqpf and the Flash Flood Risk
graphic at hurricanes.gov/graphics_at4.shtml?ero.  For a list of
rainfall observations (and wind reports) associated this storm, see
the companion storm summary at WBCSCCNS4 with the WMO header ACUS44
KWBC or at the following link:
www.wpc.ncep.noaa.gov/discussions/nfdscc4.html.
 
TORNADOES: A few tornadoes may occur over parts of eastern North
Carolina this morning.  The tornado threat will shift northward
later today into central North Carolina and southern to central 
Virginia.
 
SURF:  Large swells will continue to affect the Southeast U.S.
coast for another day or two. These conditions are likely to
cause life-threatening surf and rip current conditions. Please
consult products from your local weather office.
 
 
NEXT ADVISORY
-------------
Next complete advisory at 1100 AM EDT.
 
$$
Forecaster Cangialosi
 

Issued at 800 AM EDT Thu Aug 08 2024

000
WTNT34 KNHC 081139
TCPAT4
 
BULLETIN
Tropical Storm Debby Intermediate Advisory Number 24A
NWS National Hurricane Center Miami FL       AL042024
800 AM EDT Thu Aug 08 2024
 
...DEBBY MOVES FARTHER INLAND OVER SOUTH CAROLINA...
...MAJOR FLOOD THREAT CONTINUES FOR PORTIONS OF THE CAROLINAS AND
WESTERN VIRGINIA...
 
 
SUMMARY OF 800 AM EDT...1200 UTC...INFORMATION
----------------------------------------------
LOCATION...34.1N 79.9W
ABOUT 65 MI...100 KM WNW OF MYRTLE BEACH SOUTH CAROLINA
ABOUT 90 MI...145 KM N OF CHARLESTON SOUTH CAROLINA
MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H
PRESENT MOVEMENT...NW OR 325 DEGREES AT 7 MPH...11 KM/H
MINIMUM CENTRAL PRESSURE...995 MB...29.38 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
 
None
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
 
A Tropical Storm Warning is in effect for...
* North of South Santee River, South Carolina to Ocracoke Inlet,
North Carolina
 
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case during the
next 12 hours.
 
For storm information specific to your area, including possible
inland watches and warnings, please monitor products issued by your
local National Weather Service forecast office.
 
 
DISCUSSION AND OUTLOOK
----------------------
At 800 AM EDT (1200 UTC), the center of Tropical Storm Debby was
located inland over South Carolina near latitude 34.1 North,
longitude 79.9 West.  Debby is moving toward the northwest near 7
mph (11 km/h).  The storm is expected to accelerate toward the
north-northwest and north across eastern South Carolina and central
North Carolina through tonight.  Debby is then expected to move
faster toward the northeast across the U.S. Mid-Atlantic and
Northeast on Friday and Atlantic Canada on Saturday.
 
Maximum sustained winds are near 45 mph (75 km/h) with higher
gusts. Continued weakening is forecast during the next day or so, 
and Debby is likely to become a tropical depression this 
afternoon or evening. Debby should then merge with a front and 
become extratropical on Friday.
 
Tropical-storm-force winds extend outward up to 185 miles (295 km)
to the east of the center.  A sustained wind of 36 mph (57 km/h) and
a gust to 39 mph (63 km/h) was recently reported at Cape Lookout,
North Carolina.
 
The estimated minimum central pressure based on surface 
observations is 995 mb (29.38 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
Key messages for Debby can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDAT4 and WMO header WTNT44 KNHC.
 
WIND: Tropical storm conditions are expected to continue along the
coasts of South Carolina and North Carolina within the tropical
storm warning area for much of the day.
 
STORM SURGE: The combination of storm surge and tide will cause
normally dry areas near the coast to be flooded by rising waters
moving inland from the shoreline. The water could reach the
following heights above ground somewhere in the indicated areas if
the peak surge occurs at the time of high tide...
 
South Santee River to Ocracoke Inlet including the Neuse and
Pamlico Rivers...1 to 3 ft
 
For a complete depiction of areas at risk of storm surge inundation,
please see the National Weather Service Peak Storm Surge Graphic,
available at hurricanes.gov/graphics_at4.shtml?peakSurge.
 
RAINFALL: Debby is expected to produce an additional 3 to 6 inches
of rainfall with locally higher amounts, across portions of
southeastern North Carolina leading to maximum storm total amounts
as high as 15 inches.  Additional rainfall of 1 to 3 inches over
portions of eastern South Carolina will bring maximum storm total
amounts as high as 20 to 25 inches. Considerable flooding is
expected across portions of eastern South Carolina and southeast
North Carolina through Friday.
 
From central North Carolina northward across portions of Virginia, 3
to 7 inches with local amounts to 10 inches, are expected through
Friday. This rainfall will likely result in areas of considerable
flash and urban flooding, with river flooding possible.
 
From portions of Maryland north through Upstate New York and
Vermont, 2 to 4 inches, with local amounts to 6 inches, are expected
through Friday night. This will likely result in areas of
considerable flash and urban flooding as well as river flooding.
 
For a complete depiction of forecast rainfall and flash flooding
associated with  Debby, please see the National Weather Service
Storm Total Rainfall Graphic, available at
hurricanes.gov/graphics_at4.shtml?rainqpf and the Flash Flood Risk
graphic at hurricanes.gov/graphics_at4.shtml?ero.  For a list of
rainfall observations (and wind reports) associated this storm, see
the companion storm summary at WBCSCCNS4 with the WMO header ACUS44
KWBC or at the following link:
www.wpc.ncep.noaa.gov/discussions/nfdscc4.html.
 
TORNADOES: A few tornadoes may occur over parts of eastern North
Carolina this morning.  The tornado threat will shift northward
later today into central North Carolina and southern to central 
Virginia.
 
SURF:  Large swells will continue to affect the Southeast U.S.
coast for another day or two. These conditions are likely to
cause life-threatening surf and rip current conditions. Please
consult products from your local weather office.
 
 
NEXT ADVISORY
-------------
Next complete advisory at 1100 AM EDT.
 
$$
Forecaster Cangialosi
 

Issued at 500 AM EDT Thu Aug 08 2024

000
WTNT34 KNHC 080852
TCPAT4
 
BULLETIN
Tropical Storm Debby Advisory Number  24
NWS National Hurricane Center Miami FL       AL042024
500 AM EDT Thu Aug 08 2024
 
...DEBBY'S CENTER CREEPING INLAND OVER SOUTH CAROLINA...
...MAJOR FLOOD THREAT CONTINUES FOR PORTIONS OF THE CAROLINAS AND
WESTERN VIRGINIA...
 
 
SUMMARY OF 500 AM EDT...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...33.2N 79.7W
ABOUT 30 MI...50 KM NNE OF CHARLESTON SOUTH CAROLINA
ABOUT 60 MI...95 KM SW OF MYRTLE BEACH SOUTH CAROLINA
MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H
PRESENT MOVEMENT...NW OR 325 DEGREES AT 5 MPH...7 KM/H
MINIMUM CENTRAL PRESSURE...994 MB...29.36 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
 
A Tropical Storm Warning has been issued for the coast of North
Carolina east of Surf City to Ocracoke Inlet.
 
The Tropical Storm Warning has been discontinued south of South
Santee River, South Carolina.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
 
A Tropical Storm Warning is in effect for...
* North of South Santee River, South Carolina to Ocracoke Inlet,
North Carolina
 
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case during the
next 12 hours.
 
For storm information specific to your area, including possible
inland watches and warnings, please monitor products issued by your
local National Weather Service forecast office.
 
 
DISCUSSION AND OUTLOOK
----------------------
At 500 AM EDT (0900 UTC), the center of Tropical Storm Debby was
located inland over South Carolina near latitude 33.2 North,
longitude 79.7 West.  Debby is moving toward the northwest near 5
mph (7 km/h) but is expected to accelerate toward the
north-northwest and north across eastern South Carolina and central
North Carolina through tonight.  Debby is then expected to move
faster toward the northeast across the U.S. Mid-Atlantic and
Northeast on Friday and Atlantic Canada on Saturday.
 
Maximum sustained winds are near 50 mph (85 km/h) with higher gusts.
Weakening is forecast during the next day or so, and Debby is
likely to become a tropical depression by this afternoon or
evening.  Debby should then merge with a front and become
extratropical on Friday.
 
Tropical-storm-force winds extend outward up to 185 miles (295 km)
to the east of the center.  A sustained wind of 36 mph (57 km/h) 
and a gust to 39 mph (63 km/h) was recently reported at Cape 
Lookout, North Carolina.
 
The estimated minimum central pressure is 994 mb (29.36 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
Key messages for Debby can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDAT4 and WMO header WTNT44 KNHC.
 
WIND: Tropical storm conditions are expected to continue along the
coasts of South Carolina and North Carolina within the tropical
storm warning area through today.
 
STORM SURGE: The combination of storm surge and tide will cause
normally dry areas near the coast to be flooded by rising waters
moving inland from the shoreline. The water could reach the
following heights above ground somewhere in the indicated areas if
the peak surge occurs at the time of high tide...
 
South Santee River to Ocracoke Inlet including the Neuse and
Pamlico Rivers...1 to 3 ft
 
For a complete depiction of areas at risk of storm surge inundation,
please see the National Weather Service Peak Storm Surge Graphic,
available at hurricanes.gov/graphics_at4.shtml?peakSurge.
 
RAINFALL: Debby is expected to produce an additional 3 to 6 inches
of rainfall with locally higher amounts, across portions of
southeastern North Carolina leading to maximum storm total amounts
as high as 15 inches.  Additional rainfall of 1 to 3 inches over
portions of eastern South Carolina will bring maximum storm total
amounts as high as 20 to 25 inches. Considerable flooding is
expected across portions of eastern South Carolina and southeast
North Carolina through Friday.
 
From central North Carolina northward across portions of Virginia, 3
to 7 inches with local amounts to 10 inches, are expected through
Friday. This rainfall will likely result in areas of considerable
flash and urban flooding, with river flooding possible.
 
From portions of Maryland north through Upstate New York and
Vermont, 2 to 4 inches, with local amounts to 6 inches, are expected
through Friday night. This will likely result in areas of
considerable flash and urban flooding as well as river flooding.
 
For a complete depiction of forecast rainfall and flash flooding
associated with  Debby, please see the National Weather Service
Storm Total Rainfall Graphic, available at
hurricanes.gov/graphics_at4.shtml?rainqpf and the Flash Flood Risk
graphic at hurricanes.gov/graphics_at4.shtml?ero.  For a list of
rainfall observations (and wind reports) associated this storm, see
the companion storm summary at WBCSCCNS4 with the WMO header ACUS44
KWBC or at the following link:
www.wpc.ncep.noaa.gov/discussions/nfdscc4.html.
 
TORNADOES: A few tornadoes may occur over parts of eastern North
Carolina this morning.  The tornado threat will shift northward
today into central North Carolina and southern to central Virginia.
 
SURF:  Large swells will continue to affect the Southeast U.S.
coast through the end of the week. These conditions are likely to
cause life-threatening surf and rip current conditions. Please
consult products from your local weather office.
 
 
NEXT ADVISORY
-------------
Next intermediate advisory at 800 AM EDT.
Next complete advisory at 1100 AM EDT.
 
$$
Forecaster Berg
 

Issued at 500 AM EDT Thu Aug 08 2024

000
WTNT44 KNHC 080853
TCDAT4
 
Tropical Storm Debby Discussion Number  24
NWS National Hurricane Center Miami FL       AL042024
500 AM EDT Thu Aug 08 2024
 
Surface observations and satellite imagery suggest that Debby's
circulation has become stretched out to the north and south, but
the center appeared to make landfall around 0600 UTC in the Bulls
Bay area of South Carolina.  A shield of moderate to heavy rain has
spread northward into North Carolina, while a trailing band of deep
convection is located offshore the coast of South Carolina.  An Air
Force Reserve Hurricane Hunter mission that concluded around
midnight measured peak 925-mb flight-level winds of 55 kt and SFMR
winds of 40-45 kt well east of the center, and the current
intensity is therefore estimated to be 45 kt.
 
Debby's center has not yet made much headway into South Carolina
since the initial motion is northwestward (325 deg) at only 4 kt.
A strengthening ridge over the Atlantic should start giving Debby a
push to the north today, with the center of the cyclone moving
across eastern South Carolina and central North Carolina through
tonight.  A deep-layer trough over the Upper Midwest should then
cause Debby to turn northeastward and accelerate over the
Mid-Atlantic and Northeast U.S. Friday and Friday night and then
over Atlantic Canada on Saturday.  No significant changes were made
to the NHC track forecast compared to the one in the previous
advisory.
 
Debby is expected to continue weakening as the center moves farther
inland, and global model fields suggest that winds near the coast
should fall below tropical storm force, with the cyclone becoming a
depression, by this afternoon or evening.  Model phase-space
diagrams, and the convective pattern in simulated satellite
imagery, then indicate that Debby will merge with a cold front and
become extratropical over the Mid-Atlantic region on Friday.  Debby
is shown to be dissipated by day 4 based on continuity from the
previous forecast, but it is possible that an area of low pressure
could continue eastward over the north Atlantic for a few more days.
 
 
Key Messages:
 
1. Heavy rainfall across portions of the Carolinas is expected to
persist through today along with areas of considerable flooding.
Heavy rainfall will also result in considerable flooding impacts
across portions of the Mid-Atlantic States and Northeast through
Saturday morning.
 
2. Tropical storm conditions will continue to affect portions of
the South Carolina and North Carolina coasts today.
 
3. Coastal flooding due to storm surge is likely along portions of
the South Carolina and North Carolina coastline through today.
 
 
FORECAST POSITIONS AND MAX WINDS
 
INIT  08/0900Z 33.2N  79.7W   45 KT  50 MPH...INLAND
 12H  08/1800Z 34.2N  80.1W   35 KT  40 MPH...INLAND
 24H  09/0600Z 36.3N  79.7W   30 KT  35 MPH...INLAND
 36H  09/1800Z 40.0N  77.3W   30 KT  35 MPH...POST-TROP/EXTRATROP
 48H  10/0600Z 44.5N  72.6W   30 KT  35 MPH...POST-TROP/EXTRATROP
 60H  10/1800Z 48.7N  65.8W   30 KT  35 MPH...POST-TROP/EXTRATROP
 72H  11/0600Z 51.6N  58.7W   30 KT  35 MPH...POST-TROP/EXTRATROP
 96H  12/0600Z...DISSIPATED
 
$$
Forecaster Berg
 

Issued at 0900 UTC THU AUG 08 2024

000
WTNT24 KNHC 080850
TCMAT4
 
TROPICAL STORM DEBBY FORECAST/ADVISORY NUMBER  24
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL042024
0900 UTC THU AUG 08 2024
 
TROPICAL STORM CENTER LOCATED NEAR 33.2N  79.7W AT 08/0900Z
POSITION ACCURATE WITHIN  25 NM
 
PRESENT MOVEMENT TOWARD THE NORTHWEST OR 325 DEGREES AT   4 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE  994 MB
MAX SUSTAINED WINDS  45 KT WITH GUSTS TO  55 KT.
34 KT.......150NE 160SE   0SW   0NW.
12 FT SEAS..270NE 180SE   0SW   0NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT.  RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.
 
REPEAT...CENTER LOCATED NEAR 33.2N  79.7W AT 08/0900Z
AT 08/0600Z CENTER WAS LOCATED NEAR 32.9N  79.6W
 
FORECAST VALID 08/1800Z 34.2N  80.1W...INLAND
MAX WIND  35 KT...GUSTS  45 KT.
34 KT...  0NE 180SE   0SW   0NW.
 
FORECAST VALID 09/0600Z 36.3N  79.7W...INLAND
MAX WIND  30 KT...GUSTS  40 KT.
 
FORECAST VALID 09/1800Z 40.0N  77.3W...POST-TROP/EXTRATROP
MAX WIND  30 KT...GUSTS  40 KT.
 
FORECAST VALID 10/0600Z 44.5N  72.6W...POST-TROP/EXTRATROP
MAX WIND  30 KT...GUSTS  40 KT.
 
FORECAST VALID 10/1800Z 48.7N  65.8W...POST-TROP/EXTRATROP
MAX WIND  30 KT...GUSTS  40 KT.
 
FORECAST VALID 11/0600Z 51.6N  58.7W...POST-TROP/EXTRATROP
MAX WIND  30 KT...GUSTS  40 KT.
 
EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 125 NM
ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY
 
OUTLOOK VALID 12/0600Z...DISSIPATED
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 33.2N  79.7W
 
INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 08/1200Z
 
NEXT ADVISORY AT 08/1500Z
 
$$
FORECASTER BERG
 
 

Issued at 200 AM EDT Thu Aug 08 2024

000
WTNT34 KNHC 080544
TCPAT4
 
BULLETIN
Tropical Storm Debby Intermediate Advisory Number 23A
NWS National Hurricane Center Miami FL       AL042024
200 AM EDT Thu Aug 08 2024
 
...DEBBY MAKES LANDFALL NEAR BULLS BAY SOUTH CAROLINA...
...MAJOR FLOOD THREAT CONTINUES FOR PORTIONS OF THE CAROLINAS AND 
WESTERN VIRGINIA...
 
 
SUMMARY OF 200 AM EDT...0600 UTC...INFORMATION
----------------------------------------------
LOCATION...33.0N 79.6W
ABOUT 20 MI...35 KM NE OF CHARLESTON SOUTH CAROLINA
ABOUT 65 MI...100 KM SW OF MYRTLE BEACH SOUTH CAROLINA
MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H
PRESENT MOVEMENT...NW OR 325 DEGREES AT 5 MPH...7 KM/H
MINIMUM CENTRAL PRESSURE...995 MB...29.38 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
 
None.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
 
A Tropical Storm Warning is in effect for...
* Edisto Beach, South Carolina to Surf City, North Carolina
 
A Tropical Storm Watch is in effect for...
* North of Surf City, North Carolina to Beaufort Inlet, North
Carolina
 
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area.
 
A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area.
 
For storm information specific to your area, including possible
inland watches and warnings, please monitor products issued by your
local National Weather Service forecast office.
 
 
DISCUSSION AND OUTLOOK
----------------------
Surface observations, satellite images, and radar data indicate 
that Debby has made landfall near Bulls Bay, South Carolina.  At 
200 AM EDT (0600 UTC), the center of Tropical Storm Debby was
located on the coast near latitude 33.0 North, longitude 79.6 West. 
Debby is moving toward the northwest near 5 mph (7 km/h). This 
general motion is expected to continue through this morning.  A 
faster motion toward the north and north-northeast across the 
Carolinas and the U.S. Mid-Atlantic states is expected later today 
and on Friday.
 
Air Force Reserve Hurricane Hunter aircraft data indicate that 
maximum sustained winds have decreased to near 50 mph (85 km/h) 
with higher gusts. Additional weakening is forecast today as the 
center moves farther inland.  Debby is expected to merge with a 
frontal boundary over the U.S. Mid-Atlantic states on Friday or 
Friday night.
 
Tropical-storm-force winds extend outward up to 185 miles (295 km)
mainly to the east of the center.
 
The estimated minimum central pressure based on surface observations 
is 995 mb (29.38 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
Key messages for Debby can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDAT4 and WMO header WTNT44 KNHC.
 
WIND: Tropical storm conditions are expected to continue along the
coast of South Carolina within the tropical storm warning area
through today. Tropical storm conditions are expected within the
tropical storm warning area and possible within the tropical storm
watch area in North Carolina through today.
 
STORM SURGE: The combination of storm surge and tide will cause
normally dry areas near the coast to be flooded by rising waters
moving inland from the shoreline. The water could reach the
following heights above ground somewhere in the indicated areas if
the peak surge occurs at the time of high tide...
 
South Santee River to Ocracoke Inlet including the Neuse and
Pamlico Rivers...1 to 3 ft
 
For a complete depiction of areas at risk of storm surge inundation,
please see the National Weather Service Peak Storm Surge Graphic,
available at hurricanes.gov/graphics_at4.shtml?peakSurge.
 
RAINFALL: Debby is expected to produce an additional 3 to 9 inches
of rainfall with locally higher amounts, leading to maximum storm
total amounts as high as 25 inches in eastern South Carolina and 15
inches in southeast North Carolina with considerable flooding
expected across portions of eastern South Carolina and southeast
North Carolina through Friday.
 
An additional 1 to 2 inches of rainfall with locally higher amounts
is possible across southeast Georgia through today, bringing
overall storm total amounts as high as 15 inches, which may
aggravate any ongoing flooding conditions.
 
From the Piedmont of South Carolina northward across portions of
Virginia, 3 to 7 inches with local amounts to 10 inches, are
expected through Friday. This rainfall will likely result in areas
of considerable flash and urban flooding, with river flooding
possible.
 
From Maryland north through Upstate New York and Vermont, 2 to 4
inches, with local amounts to 6 inches, are expected through
Saturday morning. This will likely produce considerable flash and
urban flooding as well as river flooding.
 
For Long Island and the remainder of New England, 1 to 2 inches,
with local amounts to 4 inches, are expected into Saturday.
Scattered instances of flash flooding are possible.
 
For a complete depiction of forecast rainfall and flash flooding
associated with  Debby, please see the National Weather Service
Storm Total Rainfall Graphic, available at
hurricanes.gov/graphics_at4.shtml?rainqpf and the Flash Flood Risk
graphic at hurricanes.gov/graphics_at4.shtml?ero.
 
For a list of rainfall observations (and wind reports) associated
this storm, see the companion storm summary at WBCSCCNS4 with the
WMO header ACUS44 KWBC or at the following link:
www.wpc.ncep.noaa.gov/discussions/nfdscc4.html.
 
TORNADOES: A few tornadoes may occur over parts of eastern North
Carolina early this morning. The risk of tornadoes will shift 
northward on Thursday into central North Carolina and central 
Virginia.
 
SURF:  Large swells will continue to affect the Southeast U.S.
coast through the end of the week. These conditions are likely to
cause life-threatening surf and rip current conditions. Please
consult products from your local weather office.
 
 
NEXT ADVISORY
-------------
Next complete advisory at 500 AM EDT.
 
$$
Forecaster Berg
 

Issued at 0300 UTC THU AUG 08 2024

000
WTNT24 KNHC 080231
TCMAT4
 
TROPICAL STORM DEBBY FORECAST/ADVISORY NUMBER  23
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL042024
0300 UTC THU AUG 08 2024
 
TROPICAL STORM CENTER LOCATED NEAR 32.9N  79.5W AT 08/0300Z
POSITION ACCURATE WITHIN  25 NM
 
PRESENT MOVEMENT TOWARD THE NORTH-NORTHWEST OR 345 DEGREES AT   3 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE  994 MB
MAX SUSTAINED WINDS  50 KT WITH GUSTS TO  60 KT.
50 KT.......  0NE 120SE   0SW   0NW.
34 KT.......150NE 160SE  90SW   0NW.
12 FT SEAS..240NE 180SE   0SW   0NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT.  RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.
 
REPEAT...CENTER LOCATED NEAR 32.9N  79.5W AT 08/0300Z
AT 08/0000Z CENTER WAS LOCATED NEAR 32.7N  79.4W
 
FORECAST VALID 08/1200Z 33.7N  79.8W...INLAND
MAX WIND  45 KT...GUSTS  55 KT.
34 KT...100NE 140SE   0SW   0NW.
 
FORECAST VALID 09/0000Z 35.3N  80.0W...INLAND
MAX WIND  35 KT...GUSTS  45 KT.
34 KT...  0NE 120SE   0SW   0NW.
 
FORECAST VALID 09/1200Z 38.1N  79.0W...INLAND
MAX WIND  30 KT...GUSTS  40 KT.
 
FORECAST VALID 10/0000Z 42.1N  75.6W...INLAND
MAX WIND  30 KT...GUSTS  40 KT.
 
FORECAST VALID 10/1200Z 46.3N  70.5W...POST-TROP/EXTRATROP
MAX WIND  30 KT...GUSTS  40 KT.
 
FORECAST VALID 11/0000Z 49.0N  64.0W...POST-TROP/EXTRATROP
MAX WIND  30 KT...GUSTS  40 KT.
 
EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 125 NM
ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY
 
OUTLOOK VALID 12/0000Z...DISSIPATED
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 32.9N  79.5W
 
INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 08/0600Z
 
NEXT ADVISORY AT 08/0900Z
 
$$
FORECASTER BEVEN
 
 

Issued at 1100 PM EDT Wed Aug 07 2024

000
WTNT34 KNHC 080231
TCPAT4
 
BULLETIN
Tropical Storm Debby Advisory Number  23
NWS National Hurricane Center Miami FL       AL042024
1100 PM EDT Wed Aug 07 2024
 
...CENTER OF DEBBY ABOUT TO CROSS THE COAST OF SOUTH CAROLINA...
...MAJOR FLOOD THREAT CONTINUES FOR PORTIONS OF THE CAROLINAS...
 
 
SUMMARY OF 1100 PM EDT...0300 UTC...INFORMATION
-----------------------------------------------
LOCATION...32.9N 79.5W
ABOUT 25 MI...40 KM ENE OF CHARLESTON SOUTH CAROLINA
ABOUT 65 MI...105 KM SSW OF MYRTLE BEACH SOUTH CAROLINA
MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H
PRESENT MOVEMENT...NNW OR 345 DEGREES AT 3 MPH...6 KM/H
MINIMUM CENTRAL PRESSURE...994 MB...29.36 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
 
The Tropical Storm Warning has been discontinued south of Edisto
Beach, South Carolina.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
 
A Tropical Storm Warning is in effect for...
* Edisto Beach, South Carolina to Surf City, North Carolina
 
A Tropical Storm Watch is in effect for...
* North of Surf City, North Carolina to Beaufort Inlet, North
Carolina
 
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area.
 
A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area.
 
Interests elsewhere along the southeastern coast of the United
States should monitor the progress of this system.
 
For storm information specific to your area, including possible
inland watches and warnings, please monitor products issued by your
local National Weather Service forecast office.
 
 
DISCUSSION AND OUTLOOK
----------------------
At 1100 PM EDT (0300 UTC), the center of Tropical Storm Debby was
located near latitude 32.9 North, longitude 79.5 West. Debby is
moving toward the north-northwest near 3 mph (6 km/h). This 
general motion is expected to continue through Thursday, bringing 
the center across the South Carolina coast during the next several 
hours. A faster motion toward the north and north-northeast across 
the Carolinas and the U.S. Mid-Atlantic states is expected later on 
Thursday and on Friday.
 
Maximum sustained winds are near 60 mph (95 km/h) with higher gusts.
Weakening is forecast to begin on Thursday after the center moves 
inland. Debby is expected to merge with a frontal boundary over the 
U.S. Mid-Atlantic states on Friday or Friday night.
 
Tropical-storm-force winds extend outward up to 185 miles (295 km)
mainly to the east of the center. NOAA buoy 41013 near Frying Pan 
Shoals, North Carolina, recently reported sustained winds of 38 
mph (61 km/h) and a wind gust of 45 mph (72 km/h).
 
The estimated minimum central pressure based on surface 
observations and Air Force Reserve Hurricane Hunter aircraft data 
is 994 mb (29.36 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
Key messages for Debby can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDAT4 and WMO header WTNT44 KNHC.
 
WIND: Tropical storm conditions are expected to continue along the
coast of South Carolina within the tropical storm warning area
through Thursday. Tropical storm conditions are expected within the
tropical storm warning area and possible within the tropical storm
watch area in North Carolina tonight through Thursday.
 
STORM SURGE: The combination of storm surge and tide will cause
normally dry areas near the coast to be flooded by rising waters
moving inland from the shoreline. The water could reach the
following heights above ground somewhere in the indicated areas if
the peak surge occurs at the time of high tide...
 
South Santee River to Ocracoke Inlet including the Neuse and
Pamlico Rivers...1 to 3 ft
 
For a complete depiction of areas at risk of storm surge inundation,
please see the National Weather Service Peak Storm Surge Graphic,
available at hurricanes.gov/graphics_at4.shtml?peakSurge.
 
RAINFALL: Debby is expected to produce an additional 3 to 9 inches
of rainfall with locally higher amounts, leading to maximum storm
total amounts as high as 25 inches in eastern South Carolina and 15
inches in southeast North Carolina with considerable flooding
expected across portions of eastern South Carolina and southeast
North Carolina through Friday.
 
An additional 1 to 2 inches of rainfall with locally higher amounts
is possible across southeast Georgia through Thursday, bringing
overall storm total amounts as high as 15 inches, which may
aggravate any ongoing flooding conditions.
 
From the piedmont of South Carolina northward across portions of
Virginia, 3 to 7 inches with local amounts to 10 inches, are
expected through Friday. This rainfall will likely result in areas
of considerable flash and urban flooding, with river flooding
possible.
 
From Maryland north through Upstate New York and Vermont, 2 to 4
inches, with local amounts to 6 inches, are expected through
Saturday morning. This will likely produce considerable flash and
urban flooding as well as river flooding.
 
For Long Island and the remainder of New England, 1 to 2 inches,
with local amounts to 4 inches, are expected into Saturday.
Scattered instances of flash flooding are possible.
 
For a complete depiction of forecast rainfall and flash flooding
associated with  Debby, please see the National Weather Service
Storm Total Rainfall Graphic, available at
hurricanes.gov/graphics_at4.shtml?rainqpf and the Flash Flood Risk
graphic at hurricanes.gov/graphics_at4.shtml?ero.
 
For a list of rainfall observations (and wind reports) associated
this storm, see the companion storm summary at WBCSCCNS4 with the
WMO header ACUS44 KWBC or at the following link:
www.wpc.ncep.noaa.gov/discussions/nfdscc4.html.
 
TORNADOES: A few tornadoes may occur over parts of eastern North 
Carolina overnight. The risk of tornadoes will shift northward on 
Thursday into central North Carolina and central Virginia.
 
SURF:  Large swells will continue to affect the Southeast U.S.
coast through the end of the week. These conditions are likely to
cause life-threatening surf and rip current conditions. Please
consult products from your local weather office.
 
 
NEXT ADVISORY
-------------
Next intermediate advisory at 200 AM EDT.
Next complete advisory at 500 AM EDT.
 
$$
Forecaster Beven
 

Issued at 1100 PM EDT Wed Aug 07 2024

000
WTNT44 KNHC 080232
TCDAT4
 
Tropical Storm Debby Discussion Number  23
NWS National Hurricane Center Miami FL       AL042024
1100 PM EDT Wed Aug 07 2024
 
Satellite imagery and surface observations indicate that Debby has
a large central area of light and variable winds, with bands of
deep convection well removed from the center in both the northern
and southern semicircles.  The initial intensity is held at 50 kt
for this advisory, with these winds likely confined to the area of
stronger convection to the southeast of the center.  The central
pressure based on surface observations is near 994 mb.
 
Debby has been drifting just west of due north for the past several 
hours with an initial motion of 345/3.  This has brought the center 
near the South Carolina coast, and it is expected to move inland 
during the next few hours.  A continued slow north-northwestward 
motion is expected for the next 24 h, with the center crossing 
eastern South Carolina moving into North Carolina.  After that, the 
cyclone should recurve to the north and northeast on the east side 
of a mid-latitude trough near the Great Lakes.  The latest track 
guidance has shifted a little to the west of the previous guidance, 
and the new forecast track is also shifted a little westward.

Little change in strength is expected before the center moves 
inland.  After that, Debby is expected to weaken, with the system 
dropping below tropical-storm strength after 24 h.  As Debby 
crosses through the mid-Atlantic States, the cyclone is expected 
to merge with a frontal system and become an extratropical low by 
60 h. However, it is important to note that none of these changes 
will diminish the threat of heavy rainfall and flooding across 
portions of the Carolinas, Mid-Atlantic, and northeastern United 
States during the next few days.
 
 
Key Messages:
 
1. Heavy rainfall across portions of the Carolinas is expected to
persist through Thursday along with areas of considerable flooding.
Expected heavy rainfall will also result in considerable flooding
impacts across portions of the Mid-Atlantic States and Northeast
through Saturday morning.
 
2. Tropical storm conditions will affect portions of the South
Carolina and North Carolina coast through Thursday. Tropical storm
warnings and watches are in effect for portions of that area.
 
3. Coastal flooding due to storm surge is likely along portions of
the South Carolina and North Carolina coastline through Thursday.
 
 
FORECAST POSITIONS AND MAX WINDS
 
INIT  08/0300Z 32.9N  79.5W   50 KT  60 MPH
 12H  08/1200Z 33.7N  79.8W   45 KT  50 MPH...INLAND
 24H  09/0000Z 35.3N  80.0W   35 KT  40 MPH...INLAND
 36H  09/1200Z 38.1N  79.0W   30 KT  35 MPH...INLAND
 48H  10/0000Z 42.1N  75.6W   30 KT  35 MPH...INLAND
 60H  10/1200Z 46.3N  70.5W   30 KT  35 MPH...POST-TROP/EXTRATROP
 72H  11/0000Z 49.0N  64.0W   30 KT  35 MPH...POST-TROP/EXTRATROP
 96H  12/0000Z...DISSIPATED
 
$$
Forecaster Beven