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Tropical Depression Sally Public Advisory Number 24
2020-09-17 04:33:08| National Hurricane Center (Atlantic)
Issued at 1000 PM CDT Wed Sep 16 2020 279 WTNT34 KNHC 170233 TCPAT4 BULLETIN Tropical Depression Sally Advisory Number 24 NWS National Hurricane Center Miami FL AL192020 1000 PM CDT Wed Sep 16 2020 ...SALLY STILL CAUSING TORRENTIAL RAINS OVER EASTERN ALABAMA AND WESTERN GEORGIA... SUMMARY OF 1000 PM CDT...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...31.9N 86.1W ABOUT 30 MI...50 KM SSE OF MONTGOMERY ALABAMA MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...NE OR 45 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...995 MB...29.39 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Tropical Storm Warning from the Okaloosa/Walton County Florida line eastward to Indian Pass Florida is discontinued. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: There are no coastal watches or warnings in effect. 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 1000 PM CDT (0300 UTC), the center of Tropical Depression Sally was located near latitude 31.9 North, longitude 86.1 West. The depression is moving toward the northeast near 9 mph (15 km/h), and a northeastward to east-northeastward motion at a faster forward speed is expected into Friday. On the forecast track, the center of Sally will move across southeastern Alabama tonight, over central Georgia on Thursday, and move over South Carolina Thursday night. Maximum sustained winds have decreased to near 35 mph (55 km/h) with higher gusts. Additional weakening is forecast during the next couple of days, and Sally is expected to become a remnant low on Friday. The estimated minimum central pressure is 995 mb (29.39 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Sally can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT4 and WMO header WTNT44 KNHC, and on the web at www.hurricanes.gov/text/MIATCDAT4.shtml RAINFALL: Rainfall totals expected as Sally tracks across the Southeast through Friday: Southeast Alabama and central Georgia: 4 to 8 inches with isolated amounts of 12 inches, resulting in significant flash flooding and widespread minor to moderate and isolated major river flooding. Central to upstate South Carolina: 4 to 7 inches, with isolated amounts of 10 inches. Widespread flash flooding and minor to moderate river flooding is possible. Western to central North Carolina and far southeast Virginia: 4 to 6 inches, isolated amounts up to 8 inches. Scattered flash flooding and widespread minor river flooding is possible. Sally has produced storm totals of 10 to 20 inches, with isolated amounts of 30-35 inches, across the central Gulf Coast from the Florida Panhandle west of Tallahassee to Mobile Bay, Alabama. Most moderate to major river flooding will crest by the weekend, but rivers will remain elevated. STORM SURGE: Water levels remain elevated along the Florida Panhandle coast but will continue to recede over the next several hours. TORNADOES: A couple of tornadoes may occur overnight across southern Georgia and northern Florida. The threat of tornadoes will shift northeastward into eastern Georgia and much of the Carolinas on Thursday. SURF: Swells from Sally will continue to affect the Gulf Coast from the Florida Big Bend westward to southeastern Louisiana during the next day or so. These swells 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 400 AM CDT. $$ Forecaster Pasch
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