Area Forecast Discussion
Issued by NWS Huntsville, AL

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FXUS64 KHUN 270525 AAC
AFDHUN

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1125 PM CST FRI DEC 26 2014

.UPDATE...
FOR 06Z TAFS

&&

.DISCUSSION...
/ISSUED 849 PM CST FRI DEC 26 2014/

THE SFC HIGH PRESSURE SYSTEM CONTINUES TO PREVAIL ACROSS THE
SOUTHEAST FOR NOW WITH ISOLATED CLUSTERS OF STRATIFORM OVERUNNING
RAIN VIA WEAK ISENTROPIC LIFT MOVING ACROSS THE TN VALLEY THIS
EVENING. THIS ISENTROPIC LIFT LOOKS TO MOVE OFF TO THE NORTHEAST
BETWEEN 09-12Z. AS A RESULT, MADE CHANGES EARLIER TO THE FORECAST TO
ADD A SCHC OF RAIN THROUGH THE OVERNIGHT. THEN, WIDESPREAD SHOWER
ACTIVITY DEVELOPING AHEAD OF THE PROGRESSIVE UPPER TROUGH OVER THE
ROCKIES SHIFT EASTWARD TOWARDS THE TN VALLEY LATER ON SAT MORNING.

TEMPS WERE ALSO TRENDING A LITTLE COOLER IN SPOTS, ESPECIALLY WITH
THE DISCONTINUITY OF MID-HIGH LEVEL CLOUD COVER. SO, MADE ADJUSTMENTS
TO THE TEMPS PARTICULARLY OVER NE AL/S MIDDLE TN. THE DEWPOINT
FORECAST REQUIRED SOME TWEAKING FOR CURRENT TRENDS. OTHERWISE, THE
REST OF THE FORECAST LOOKS FINE.

SL.77

&&

.AVIATION...
FOR 06Z TAFS...

VFR CONDITIONS ARE EXPECTED TO CONTINUE THROUGH THE NEXT 17-18 HOURS
BEFORE WIDESPREAD SHRA ACTIVITY DEVELOPS AND MOVES ACROSS THE REGION
AFTER 17-18Z. DID INCLUDE VCSH FOR ISOLATED -SHRA ACTIVITY MAINLY
BTWN 06-12Z. MVFR CONDITIONS ARE THEN EXPECTED WITH FURTHER DROPS IN
CATEGORY POSSIBLE AFTER 28/00Z.

SL.77

&&

.HUN WATCHES/WARNINGS/ADVISORIES...
AL...NONE.
TN...NONE.
&&

$$

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE
AT WEATHER.GOV/HUNTSVILLE.



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