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BULLETIN
Post-Tropical Cyclone Beta Advisory Number  30
NWS Weather Prediction Center College Park MD   AL222020
1000 PM CDT Thu Sep 24 2020
 
...BETA DEVOLVING INTO AN ELONGATED OCCLUDED SURFACE LOW.  THREAT
OF HEAVY RAINFALL IS SHIFTING INTO THE SOUTHERN CUMBERLAND PLATEAU
AND SOUTHERN APPALACHIAN MOUNTAINS...
 
 
SUMMARY OF 1000 PM CDT...0300 UTC...INFORMATION
-----------------------------------------------
LOCATION...34.0N 87.1W
ABOUT 60 MI...100 KM NNE OF TUSCALOOSA ALABAMA
ABOUT 40 MI...60 KM NNW OF BIRMINGHAM ALABAMA
MAXIMUM SUSTAINED WINDS...25 MPH...35 KM/H
PRESENT MOVEMENT...NE OR 40 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...1008 MB...29.77 INCHES
 
 
WATCHES AND WARNINGS
--------------------
A Flash Flood Watch is currently in effect across southern
Middle Tennessee.
 
 
DISCUSSION AND OUTLOOK
----------------------
At 1000 PM CDT (0300 UTC), the center of Post-Tropical Cyclone Beta
was located near latitude 34.0 North, longitude 87.1 West. The
post-tropical cyclone is moving toward the northeast near 12 mph (19
km/h) and this motion is expected to continue through Friday.
 
Maximum sustained winds are near 25 mph (35 km/h) with higher gusts.
Continued slow weakening is forecast before weakening into the 
frontal zone later Friday
 
The estimated minimum central pressure is 1008 mb (29.77 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
Rainfall:  Rainfall totals of 1 to 3 inches are expected through
Friday from the upper Tennessee Valley, across the Southern
Appalachians and into the remainder of the Carolinas.  Isolated
flash, urban, and small stream flooding is possible, as well as
isolated minor river flooding.
 
 
NEXT ADVISORY
-------------
Next complete advisory at 400 AM CDT.
 
$$
Forecaster Gallina
 
FORECAST POSITIONS AND MAX WINDS
 
INIT  25/0300Z 34.0N  87.1W   20 KT  25 MPH...POST-TROPICAL
 12H  25/1200Z 35.0N  86.0W   15 KT  15 MPH...POST-TROP/EXTRATROP
 24H  26/0000Z...DISSIPATED
 
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