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Post-Tropical Cyclone DELTA Advisory Number 26
 
Issued 03:00Z Oct 11, 2020
 
Advisory Selection
View advisory number:  30   29   28   27   26   25   


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