Area Forecast Discussion
Issued by NWS Huntsville, AL

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000
FXUS64 KHUN 231125 AAA
AFDHUN

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
625 AM CDT TUE SEP 23 2014

.UPDATE...
FOR 12Z TAFS

&&

.DISCUSSION...
/ISSUED 157 AM CDT TUE SEP 23 2014/
WATER VAPOR IMAGERY SHOWS THE TROF THAT PASSED THRU ON SUNDAY HAS
SLOWED DOWN AND WAS SITTING OVER THE WESTERN CAROLINAS, GA AND THE FL
PANHANDLE.  THE 06Z SFC MAP INDICATES A HIGH PRESSURE CELL CENTERED
OVER OH WITH A RIDGE AXIS SITTING THRU THE LOWER MS VALLEY AND
WESTERN GULF STATES. PW VALUES HAVE DIPPED TO 0.50 INCH OR BELOW
ACROSS THE TN VALLEY AS A RESULT. A STEADY NELY FLOW CONTINUES WITH
COOL/DRY AIR ADVECTING INTO THE REGION. AT THIS HOUR, TEMPS HAVE
FALLEN INTO THE UPPER 40S TO L50S WITHIN WIND SHELTERED VALLEYS. JUST
TO OUR E-SE, AN INVERTED TROF WAS POSITIONED ACROSS WRN INTO NRN GA.
DEW POINT TEMPS ARE IN THE U50S TO L60S IN THIS AREA. THE SHORT RANGE
MODELS SHOW THE UPPER TROF OVER THE SE WEAKENING OVER THE NEXT COUPLE
OF DAYS, BUT BASICALLY STAYING ANCHORED ACROSS THE CAROLINAS, GA INTO
THE NRN GULF OF MEXICO. THE INVERTED SFC TROF WILL WORK ITS WAY WWD
TODAY ACROSS AL AND MIDDLE TN, BRINGING DEW POINT VALUES UP A FEW
DEGREES, MAINLY BY THIS EVENING. THE ONLY RESULT MAY BE A FEW MORE
HIGH BASED CU/SC CLOUDS LATE THIS AFTERNOON. DRY AND SEASONAL WX IS
EXPECTED THRU THE END OF THE WEEK WITH HIGH PRESSURE REMAINING OVER
THE GREAT LAKES PRODUCING AN E-NELY FLOW ACROSS OUR REGION. ANOTHER
INVERTED TROF MAY ARRIVE FRI-SAT WITH A BIT MORE MOISTURE AND
AFTERNOON CLOUDS. WE WILL LEAVE THE EXTENDED FORECAST AS IS AS WE
ASSESS THE POTENTIAL OF A SHORWTAVE LIFTING NEWD FROM THE GULF OF
MEXICO PRODUCING RAIN ON DAYS 6-7.

AK

&&

.AVIATION...
FOR 12Z TAFS...
VFR WEATHER IS FORECAST FOR THE TAF PERIOD. LIGHT N-NE WINDS WILL
BECOME NE-E AROUND 10KT BY THE LATE MORNING...CONTINUING INTO THE
LATE AFTERNOON. WINDS SHOULD BECOME LIGHT FROM THE EAST AFTER DUSK.
A FEW FAIR WEATHER CUMULUS ARE POSSIBLE FROM THE LATE MORNING INTO
THE MID AFTERNOON AT KHSV. WINDS SHOULD BECOME LIGHT FROM THE EAST
AFTER DUSK.

RSB

&&

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

$$

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


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