Area Forecast Discussion
Issued by NWS Huntsville, AL

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FXUS64 KHUN 221725 AAB
AFDHUN

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1225 PM CDT FRI MAY 22 2015

.UPDATE...
FOR 18Z TAFS

&&

.DISCUSSION...
/ISSUED 958 AM CDT FRI MAY 22 2015/
COOL START TO THE DAY...WITH MORNING LOWS DROPPING INTO THE LOWER TO
MID 40S IN MANY LOCATIONS. THE EXCEPTION BEING NORTHWESTERN ALABAMA
WHERE LOWS DROPPED TO AROUND 50 DEGREES. HIGH PRESSURE REMAINS IN
PLACE OVER MUCH OF THE SOUTHEASTERN CONUS...MAKING FOR A VERY
PLEASANT...BUT COOL DAY TODAY. SOME CONTINUED WEAK COLD AIR
ADVECTION WILL CONTINUE THROUGH THE DAY...BUT MODELS STILL PROG 850
MB TEMPERATURES TO REBOUND TO BETWEEN 12 AND 14 DEGREES BY LATE THIS
AFTERNOON. WITH SUNNY SKIES PROVIDING AMPLE DAYTIME HEATING...THIS
SHOULD ALLOW HIGHS TO CLIMB INTO THE LOWER TO MID 70S THIS AFTERNOON.

UPPER AIR ANALYSIS SHOWS SOME WINDS ALOFT AT 850 MB OF 25 KTS OVER
THE AREA...WHICH THE ATMOSPHERE SHOULD BE ABLE TO MIX DOWN TO SURFACE
TOWARD MIDDAY INTO THE EARLY AFTERNOON HOURS. THIS IS A LITTLE
STRONGER THAN MODELS PROG THE CURRENT WIND FIELD TO BE AT THAT LEVEL.
THEREFORE INCREASED WIND GUSTS TO AROUND 15 MPH TODAY.

LOWERED DEWPOINTS A BIT INTO THE LOWER 40S TOWARD MIDDAY...DUE TO
THE MIXING OF MUCH DRIER AIR ALOFT. DID NOT DROP THESE TOO
MUCH...SINCE LOW LEVEL MOISTURE TRANSPORT FROM THE EAST WILL BE
COMBATING THIS MIXING TO SOME EXTENT.

KTW

&&

.AVIATION...
FOR 18Z TAFS...

VFR CONDITIONS ARE EXPECTED THROUGH THE TAF PERIOD. HIGH PRESSURE
WILL CONTINUE TO SLIDE SOUTHWARD ACROSS THE REGION DURING THE NEXT 24
HOURS OR SO...WITH ONLY A FEW PASSING HIGH CLOUDS EXPECTED. NORTHEAST
WINDS MAY BE GUSTY AT TIMES DURING THE AFTERNOON...HOWEVER DID NOT
PUT ANY MENTION OF GUSTS IN THE TAFS DUE TO A LOW CONFIDENCE OF WHEN
THIS MIGHT OCCUR. BY SUNSET...WINDS WILL BECOME LIGHT AND WILL SHIFT
SOUTHWARD BY SATURDAY AT AROUND 10 KTS.

73

&&

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

$$

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



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