Debby 2024

AL042024 Advisory Number 26,

DISCLAIMER This is not official information or modeling, I’m just a dude on the internet. Please follow all guidance from NOAA and your local officials.

Windfield Map

gis_img

  • as of 2024-08-08T21:03:13+00:00
  • 100px per degree
  • GWAF 0.9
  • No Friction
  • default radius of maximum wind is 15kts

Data Files

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File List:

  • debby2024_100x100.csv
  • debby2024_100x100.png
  • debby2024_100x100.wld
  • debby2024_100x100_2024-08-08T210300+0000.jpeg

Official Advisory Discussion

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