Tropical Storm Debby Advisory Number 18

• North of South Santee River, South Carolina to Cape Fear, North Carolina

• Altamaha Sound, Georgia to Surf City, North Carolina

• North of Surf City, North Carolina to Beaufort Inlet, North Carolina

1. 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.
2. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov.
3. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area.
4. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours.
5. Interests elsewhere along the southeastern coast of the United States should monitor the progress of this system.
6. Additional watches or warnings may be required later today.
7. 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.

1. At 5:00 P.M. EASTERN DAYLIGHT TIME  (21:00 COORDINATED UNIVERSAL TIME), the center of Tropical Storm Debby was located near latitude 32.1 North, longitude 80.8 West.
2. Debby is moving toward the east northeast near 3 MILES PER HOUR, (6 KILOMETERS PER HOUR).
3. A slow  motion toward the east and then north is expected through Thursday  night.
4. On the forecast track, the center of Debby is expected to  move offshore the coast of Georgia and South Carolina later today  and tonight, continue to drift offshore through early Thursday, and  then move inland over South Carolina on Thursday morning.
5. Maximum sustained winds are near 40 MILES PER HOUR, (65 KILOMETERS PER HOUR) with higher gusts.
6. Some strengthening is forecast on Wednesday while Debby drifts offshore.
7. Tropical storm force winds extend outward up to 205 miles (335 KILOMETERS) from the center.
8. The estimated minimum central pressure is 999 mb (29.50 inches).

• 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.

• 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, South Carolina to Cape Fear, North Carolina 2 to 4 feet
• For a complete depiction of areas at risk of storm surge inundation, please see the National Weather Service Peak Storm Surge Graphic, available at

• 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 central South Carolina to the Update of South Carolina,  northward into Southwest Virginia,  portions of the Mid Atlantic  States, western and northern New York State into Northern New  England, 3 to 6 inches with local amounts to 8 inches, are expected  through Saturday.
• This rainfall will likely result in areas of  considerable flash and urban flooding, with river flooding possible.
• An additional scattered 1 to 3 inches of rainfall is possible across  southeast Georgia through Tuesday night, 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

• and the Flash Flood Risk graphic at

• 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 are possible over portions of coastal  South Carolina and North Carolina this afternoon through Wednesday  morning.

• 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 intermediate advisory at 8:00 P.M. EASTERN DAYLIGHT TIME.
• Next complete advisory at 11:00 P.M. EASTERN DAYLIGHT TIME.

Originally Posted at:
NATIONAL HURRICANE CENTER and CENTRAL PACIFIC HURRICANE CENTER
At The NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION

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