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#1192705 (Received by flhurricane at: 7:48 PM 07.Aug.2024) TCPAT4
BULLETIN
Tropical Storm Debby Intermediate Advisory Number 22A
NWS National Hurricane Center Miami FL AL042024
800 PM EDT Wed Aug 07 2024
...CENTER OF DEBBY JUST OFFSHORE OF THE COAST OF SOUTH CAROLINA...
...MAJOR FLOOD THREAT CONTINUES FOR PORTIONS OF THE CAROLINAS...
SUMMARY OF 800 PM EDT...0000 UTC...INFORMATION
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LOCATION...32.7N 79.4W
ABOUT 40 MI...65 KM ESE OF CHARLESTON SOUTH CAROLINA
ABOUT 75 MI...120 KM SSW OF MYRTLE BEACH SOUTH CAROLINA
MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H
PRESENT MOVEMENT...N OR 360 DEGREES AT 3 MPH...6 KM/H
MINIMUM CENTRAL PRESSURE...994 MB...29.35 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 the Savannah River 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 800 PM EDT (0000 UTC), the center of Tropical Storm Debby was
located near latitude 32.7 North, longitude 79.4 West. Debby is
moving toward the north near 3 mph (6 km/h). This motion is
expected to continue tonight, bringing the center across the South
Carolina coast late tonight or on Thursday morning. After landfall,
a faster motion toward the north and north-northeast across the
Carolinas and the U.S. Mid-Atlantic states is expected on Thursday
and Friday.
Maximum sustained winds are near 60 mph (95 km/h) with higher
gusts. Slight strengthening is possible tonight before the center of
Debby reaches the coast of South Carolina. 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.
Tropical-storm-force winds extend outward up to 185 miles (295 km)
mainly to the east if the center. A Coastal Ocean Research and
Monitoring Program buoy near Sunset Beach, North Carolina, recently
reported a wind gust of 43 mph (69 km/h).
The estimated minimum central pressure based on surface
observations is 994 mb (29.35 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 today 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 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 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 and extreme eastern South Carolina through tonight. 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
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Next complete advisory at 1100 PM EDT.
$$
Forecaster Beven |