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BULLETIN
Post-Tropical Cyclone Beta Advisory Number  22
NWS Weather Prediction Center College Park MD   AL222020
1000 PM CDT Tue Sep 22 2020
 
...BETA STARTING TO MOVE EAST AND CONTINUES TO BE A
HEAVY RAINFALL AND FLOODING THREAT OVER PORTIONS OF THE UPPER
TEXAS COAST INTO THE LOWER MISSISSIPPI RIVER VALLEY...
 
 
SUMMARY OF 1000 PM CDT...0300 UTC...INFORMATION
-----------------------------------------------
LOCATION...29.1N 95.4W
ABOUT 40 MI...60 KM WSW OF GALVESTON TEXAS
ABOUT 50 MI...80 KM NE OF MATAGORDA TEXAS
MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H
PRESENT MOVEMENT...NE OR 55 DEGREES AT 8 MPH...13 KM/H
MINIMUM CENTRAL PRESSURE...1007 MB...29.74 INCHES
 
 
WATCHES AND WARNINGS
--------------------
There are Flash Flood Watches currently in effect across Southeast
Texas and Southern Louisiana.
 
 
DISCUSSION AND OUTLOOK
----------------------
At 1000 PM CDT (0300 UTC), the center of Post-Tropical Cyclone Beta
was located near latitude 29.1 North, longitude 95.4 West. The
post-tropical cyclone is moving toward the northeast near 8 mph (13
km/h) and this motion is expected to continue through the next 48 
hours. 
 
Maximum sustained winds are near 30 mph (45 km/h) with higher gusts.
Little change in strength or slow weakening is forecast during the 
next 48 hours. 
 
The estimated minimum central pressure is 1007 mb (29.74 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
RAINFALL: For the upper Texas coast, additional rainfall of 4 to 8
inches with isolated storm totals up to 20 inches is expected.
Significant flash and urban flooding is occurring and will continue
overnight . Minor to isolated moderate river flooding is ongoing.
 
Rainfall totals of 13 to 14 inches have been measured across
portions of the Houston metropolitan area thus far.
 
Rainfall totals of 2 to 5 inches are expected east into the Lower
Mississippi Valley, portions of the Tennessee Valley, and the
southern Appalachians through the end of the week. Flash and urban
flooding is possible, as well as isolated minor river flooding on
smaller rivers.
 
SURF:  Swells generated by a combination of Beta and a cold front
over the northern Gulf of Mexico will continue along the coasts of
Louisiana and Texas during the next couple of days.  These swells
are likely to cause life-threatening surf and rip current
conditions. Information on ongoing coastal flooding can be found in
coastal flood products issued by local National Weather Service
offices.
 
 
NEXT ADVISORY
-------------
Next complete advisory at 400 AM CDT.
 
$$
Forecaster Gallina
 
FORECAST POSITIONS AND MAX WINDS
 
INIT  23/0300Z 29.1N  95.4W   25 KT  30 MPH...POST-TROPICAL
 12H  23/1200Z 29.7N  94.5W   25 KT  30 MPH...POST-TROP/EXTRATROP
 24H  24/0000Z 30.7N  92.8W   25 KT  30 MPH...POST-TROP/EXTRATROP
 36H  24/1200Z 32.2N  90.9W   20 KT  25 MPH...POST-TROP/EXTRATROP
 48H  25/0000Z 33.8N  88.7W   20 KT  25 MPH...POST-TROP/EXTRATROP
 60H  25/1200Z 35.4N  86.2W   15 KT  15 MPH...POST-TROP/REMNT LOW
 72H  26/0000Z...DISSIPATED
 
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