348  
WTNT31 KNHC 110450  
TCPAT1  
 
BULLETIN  
POST-TROPICAL CYCLONE DELTA ADVISORY NUMBER 26  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD AL262020  
1000 PM CDT SAT OCT 10 2020  
   
..POST-TROPICAL DELTA CONTINUES TO BE A HEAVY RAINFALL THREAT
 
 
 
SUMMARY OF 1000 PM CDT...0300 UTC...INFORMATION  
-----------------------------------------------  
LOCATION...34.0N 89.5W  
ABOUT 45 MI...70 KM WSW OF TUPELO MISSISSIPPI  
ABOUT 215 MI...345 KM SW OF NASHVILLE TENNESSEE  
MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H  
PRESENT MOVEMENT...ENE OR 60 DEGREES AT 14 MPH...22 KM/H  
MINIMUM CENTRAL PRESSURE...1002 MB...29.59 INCHES  
 
 
WATCHES AND WARNINGS  
--------------------  
FLOOD AND FLASH FLOOD WATCHES REMAIN IN EFFECT FOR AREAS IN AND  
NEAR THE SOUTHERN APPALACHIANS.  
 
 
DISCUSSION AND OUTLOOK  
----------------------  
AT 1000 PM CDT (0300 UTC), THE CENTER OF POST-TROPICAL CYCLONE DELTA  
WAS LOCATED NEAR LATITUDE 34.0 NORTH, LONGITUDE 89.5 WEST. THE  
POST-TROPICAL CYCLONE IS MOVING TOWARD THE EAST-NORTHEAST NEAR 14  
MPH (22 KM/H) AND THIS MOTION IS EXPECTED TO BECOME MORE  
EAST-NORTHEASTERLY ON SUNDAY.  
 
MAXIMUM SUSTAINED WINDS ARE NEAR 30 MPH (45 KM/H) WITH HIGHER GUSTS.  
WEAKENING IS FORECAST DURING THE NEXT 24-36 HOURS, AS DELTA'S  
SURFACE LOW IS EXPECTED TO DISSIPATE ACROSS WEST VIRGINIA LATE  
SUNDAY NIGHT.  
 
THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 1002 MB (29.59 INCHES).  
 
 
HAZARDS AFFECTING LAND  
----------------------  
 
RAINFALL: IN THE APPALACHIAN REGION OF FAR NORTHEAST GEORGIA,  
THE WESTERN CAROLINAS, AND WESTERN VIRGINIA, THE REMNANTS OF DELTA  
ARE EXPECTED TO PRODUCE 3 TO 6 INCHES OF RAIN, WHICH COULD LEAD TO  
FLASH, URBAN, SMALL STREAM, AND ISOLATED MINOR RIVER FLOODING.  
 
FROM NORTHERN ALABAMA AND THE TENNESSEE VALLEY INTO THE  
MID-ATLANTIC, 1 TO 3 INCHES OF RAIN ARE EXPECTED, WITH LOCALLY  
HIGHER AMOUNTS EXPECTED. MINIMAL HYDROLOGIC IMPACTS ARE  
EXPECTED.  
 
MODERATE TO MAJOR RIVER FLOODING WILL CONTINUE ACROSS THE CALCASIEU  
AND VERMILION RIVER BASINS IN LOUISIANA THROUGH MUCH OF NEXT WEEK.  
 
TORNADOES: A FEW TORNADOES ARE POSSIBLE ACROSS EASTERN  
ALABAMA, GEORGIA, AND UPSTATE SOUTH CAROLINA TONIGHT.  
 
 
NEXT ADVISORY  
-------------  
NEXT COMPLETE ADVISORY AT 400 AM CDT.  
 

 
FORECASTER HURLEY  
 
FORECAST POSITIONS AND MAX WINDS  
 
INIT 11/0300Z 34.0N 89.5W 25 KT 30 MPH...POST-TROPICAL  
12H 11/1200Z 35.0N 87.7W 20 KT 25 MPH...POST-TROP/EXTRATROP  
24H 12/0000Z 36.5N 84.9W 15 KT 15 MPH...POST-TROP/EXTRATROP  
36H 12/1200Z 38.2N 81.4W 15 KT 15 MPH...POST-TROP/EXTRATROP  
 
 
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