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000
FXUS64 KHUN 190545 AAC
AFDHUN

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1245 AM CDT SUN MAY 19 2013

.UPDATE...
FOR 06Z TAFS

&&

.DISCUSSION...
/ISSUED 907 PM CDT SAT MAY 18 2013/
WILL BE AMENDING THE ZONES SHORTLY TO LOWER THE PRECIP CHANCES ACROSS
THE FORECAST AREA OVERNIGHT. THE LATEST IR SATELLITE IMAGES AND
SURFACE ANALYSIS DOES INDICATE THAT THERE ARE A COUPLE OF WEAK
BOUNDARIES THAT ARE THE CULPRITS FOR THE WIDELY SCATTERED
SHOWERS/STORMS THAT ARE CONTINUING TO FORM. THE AREAS OF EMPHASIS FOR
SHOWER/STORM DEVELOPMENT ARE TO THE NORTHWEST ACROSS WEST TENNESSEE
AND ACROSS NORTHEAST ALABAMA. HAVE LOWERED POPS INTO THE SLIGHT
CHANCE CATEGORY FOR THE OVERNIGHT FORECAST AND HAVE SLIGHTLY TWEAKED
TEMPS UPWARD IN A FEW LOCATIONS ACROSS THE AREA ALONG WITH DEWPOINT
TEMPS. HAVE ALSO SLIGHTLY LOWERED THE AMOUNT OF CLOUDS ACROSS THE
FORECAST AREA DUE TO IR SATELLITE TRENDING THIS EVENING.

HAVE NOT MADE ANY OTHER CHANGES TO THE GRIDS AND THE ZONES WILL BE
ISSUED SHORTLY.

TT

&&

.AVIATION...
FOR 06Z TAFS...MVFR VSBY IN FOG WILL PERSIST AT BOTH HSV AND MSL
OVERNIGHT...WITH TEMPORARY REDUCTIONS TO IFR/LIFR POSSIBLE AFT 09Z.
POCKETS OF SHRA HAVE DEVELOPED ACROSS NW AL IN MOIST/UNSTABLE
AIRMASS. HAVE ADDED VCSH AT KMSL AND WILL MONITOR TRENDS NEXT COUPLE
HOURS...AS SHORT-RANGE HI RES MODELS DEPICT INCREASING COVERAGE OF
SHRA/TSRA OVERNIGHT ACROSS N AL. MUCH OF SUNDAY /AFT 15Z/ IS EXPECTED
TO BE DRY WITH VSBY IMPROVING TO VFR AS S/SW WINDS INCREASE. ANY MVFR
CIGS SHOULD DECREASE AFT 15Z AS WELL.

TT/DJN

&&

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

$$

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