National Weather Service Text Product Display

Area Forecast Discussion
Issued by NWS Huntsville, AL

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FXUS64 KHUN 150520 AAD
AFDHUN

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1220 AM CDT WED MAY 15 2013

.UPDATE...
FOR 06Z TAFS

&&

.DISCUSSION...
/ISSUED 919 PM CDT TUE MAY 14 2013/
FINALLY...WARM MAY TEMPERATURES HAVE RETURNED ACROSS THE TENNESSEE
VALLEY. EARLIER HIGHS WARMED TO 86/MUSCLE SHOALS AND 85 IN
HUNTSVILLE. THOSE ARE THE WARMEST READINGS OF THIS MONTH THUS FAR
(HIGHER THAN LOWER 80S ON MAY 9TH). ONLY A BIT MORE THAN A MONTH
AGO...APRIL 17TH WAS THE WARMEST DAY OF THE YEAR...87 AT MUSCLE
SHOALS AND HUNTSVILLE. WE SHOULD NEAR THAT KIND OF WARMTH ACROSS THE
VALLEY TOMORROW. ALTHOUGH IT WAS WARM HERE...DOWNRIGHT HOT WEATHER
AFFECTED PARTS OF THE CENTRAL AND NORTHERN PLAINS...WITH PLUS 100
DEGREE READINGS OCCURRING EARLIER FROM KANSAS TO SOUTHERN MINNESOTA.

A GENERALLY SPLIT FLOW PATTERN WAS IN PLACE ACROSS THE GREATER
CONUS...WITH THE POLAR JET MOVING WEST-EAST JUST SOUTH OF THE US/
CANADA BORDER...AND A SUBTROPICAL FLOW FROM SOUTH OF THE BAJA TO THE
BAHAMAS. CLOUDS AND CONVECTION FROM THE NORTHERN STREAM...AND AROUND
AN UPPER LOW OVER WEST TEXAS SHOULD REMAIN WELL TO THE WEST OF THIS
AREA THROUGH THE OVERNIGHT. OUTPUT FROM THE 18Z MODELS...AS WELL AS
NEW OUTPUT FROM THE NEW NAM INDICATED ONLY SLOW COOLING IN THE LOWER
ATMOSPHERE...SO OPTED TO RAISE LOWS A COUPLE OF DEGREES. WITH CLOUD
COVER ABSENT REGIONALLY...HAVE OPTED FOR CLEAR VS MOSTLY CLEAR FOR
THE OVERNIGHT. MOST OF THOSE UPDATES HAVE BEEN ALREADY SENT.

RSB

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

$$

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE

&&

.AVIATION...
FOR 06Z TAFS...
LOW LEVEL WIND SHEAR SHOULD CONTINUE OVERNIGHT...DUE TO SW WINDS
NEARING 50KT 2-3KFT AGL. THESE WINDS AT/ABOVE THE BOUNDARY LAYER
SHOULD GRADUALLY DIMINISH BELOW LLWS CRITERIA BEFORE DAYBREAK WED.
OTHERWISE...VFR WEATHER SHOULD CONTINUE THIS PERIOD. 5-10KT SW WINDS
SHOULD INCREASE TO 10-20KT BY 15Z. SOME HIGHER GUSTS ARE POSSIBLE
DURING THE MID AFTERNOON PEAK HEATING HOURS. WINDS SHOULD DIMINISH
AROUND DUSK.

RSB

&&

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

$$

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

National Weather Service Weather Forecast Office