801
WTNT34 KNHC 061452
TCPAT4

BULLETIN
Tropical Storm Debby Advisory Number 17
NWS National Hurricane Center Miami FL AL042024
1100 AM EDT Tue Aug 06 2024

...DEBBY EXPECTED TO MEANDER NEAR THE SOUTH CAROLINA COAST DURING
THE NEXT COUPLE OF DAYS...
...SERIOUS FLOOD THREAT OVER PORTIONS OF THE SOUTHEASTERN
UNITED STATES THIS WEEK...

SUMMARY OF 1100 AM EDT...1500 UTC...INFORMATION -----------------------------------------------
LOCATION...31.9N 81.0W
ABOUT 15 MI...20 KM S OF SAVANNAH GEORGIA
ABOUT 90 MI...145 KM SW OF CHARLESTON SOUTH CAROLINA
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...ENE OR 60 DEGREES AT 6 MPH...9 KM/H
MINIMUM CENTRAL PRESSURE...999 MB...29.50 INCHES

WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:

The Tropical Storm Watch from north of Little River Inlet, South
Carolina to Surf City, North Carolina is changed to a Tropical
Storm Warning.

A Tropical Storm Watch has been issued north of Surf City, North
Carolina to Beaufort Inlet, North Carolina.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Storm Surge Warning is in effect for...
* Altamaha Sound, Georgia to South Santee River, South Carolina

A Storm Surge Watch is in effect for...
* North of South Santee River, South Carolina to Cape Fear, North Carolina

A Tropical Storm Warning is in effect for...
* Altamaha Sound, Georgia 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 Storm Surge Warning means there is a danger of life-threatening
inundation, from rising water moving inland from the coastline. For
a depiction of areas at risk, please see the National Weather
Service Storm Surge Watch/Warning Graphic, available at
hurricanes.gov.

This is a life-threatening situation. Persons located within these
areas should take all necessary actions to protect life and property
from rising water and the potential for other dangerous conditions.
Promptly follow evacuation and other instructions from local
officials.

A Storm Surge Watch means there is a possibility of life-
threatening inundation, from rising water moving inland from the
coastline, in the indicated locations during the next 48 hours.
For a depiction of areas at risk, please see the National Weather
Service Storm Surge Watch/Warning Graphic, available at
hurricanes.gov.

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, generally within 48 hours.

Interests elsewhere along the southeastern coast of the United
States should monitor the progress of this system. Additional
watches or warnings may be required later today.

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 31.9 North, longitude 81.0 West. Debby is
moving toward the east-northeast near 6 mph (9 km/h). A slow
motion toward the east and then north is expected through Thursday
night. On the forecast track, the center of Debby is expected to
move offshore the coast of Georgia later today and tonight, continue
to drift offshore through early Thursday, and then move inland over
South Carolina on Thursday.

Maximum sustained winds are near 40 mph (65 km/h) with higher gusts.
Some strengthening is forecast on Wednesday and Thursday while
Debby drifts offshore.

Tropical-storm-force winds extend outward up to 205 miles (335 km)
from the center.

The estimated minimum central pressure is 999 mb (29.50 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 over portions of the
tropical storm warning area along the Georgia coast for the next
few hours. Tropical storm conditions are expected to continue along
the coast of South Carolina within the tropical storm warning area
through Thursday night. Tropical storm conditions are expected
within the tropical storm warning area in North Carolina beginning
early Wednesday. Tropical Storm conditions are possible within the
Tropical Storm Watch area in North Carolina beginning Wednesday.

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...

Altamaha Sound, GA to Cape Fear, NC...2-4 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 potentially historic rainfall
totals of 10 to 20 inches, with maximum amounts of 25 inches,
bringing areas of catastrophic flooding across portions of the
eastern half of South Carolina, and southeast North Carolina through
Friday.

From northern North Carolina through portions of the Mid-Atlantic
States, 4 to 8 inches of rainfall, with local amounts to 12 inches,
are expected through Sunday morning. This rainfall will likely
result in areas of considerable flash and urban flooding, with river
flooding possible.

An additional scattered 1 to 2 inches of rainfall, with maximum
amounts of 4 inches is possible across western portion of the
Central Florida Peninsula and southeast Georgia today which may
aggravate any ongoing flooding conditions across that vicinity.

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: http://www.wpc.ncep.noaa.gov/discussions/nfdscc4.html

TORNADOES: A few tornadoes are possible over coastal South Carolina
and coastal southeast North Carolina today through Wednesday
morning.

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 PM EDT.
Next complete advisory at 500 PM EDT.

$$
Forecaster Pasch

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