Area Forecast Discussion
Issued by NWS Huntsville, AL

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000
FXUS64 KHUN 010209 AAB
AFDHUN

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
909 PM CDT SAT APR 30 2016

.UPDATE...
TO LOWER POPS INTO CHC RANGE OVERNIGHT. MINOR ADJUSTMENTS TO
TEMPS/WIND.

&&

.DISCUSSION...
A WAKE LOW HAS GENERATED WHAT APPEARS TO BE ONE OR MORE BORES ON
RADAR THAT ARE LIFTING N AND NE THRU NRN AL AS SEEN ON KHTX. I AM
UNSURE, BUT THE NORTHERN PERIPHERY OF THIS FEATURE MAY HAVE HELPED TO
KICK OF NEW SHRA/TSRA IN MIDDLE/SWRN TN. THERE HAS BEEN NO WINDS AT
THE SFC IN OUR FORECAST AREA, ALTHOUGH WIND GUSTS OF ~25KT ARE BEING
REPORTED IN THE BIRMINGHAM AREA. THE SHORT RANGE MODELS CONTINUE TO
VARY IN THEIR DEPICTION OF SOME REDEVELOPMENT OF CONVECTION TONIGHT.
THE 00Z SOUNDINGS REMAIN UNSTABLE ALOFT. THERE IS JUST A LACK OF A
DEFINED FORCING MECHANISM. 850 MB WINDS ALSO ARE PROGGED TO VEER TO
THE SW AND DECREASE OVERNIGHT, LIMITING MOISTURE TRANSPORT. SO HAVE
OPTED TO LOWER POPS FROM LIKELY TO CHANCE OVERNIGHT.
&&

.AVIATION...
/ISSUED 628 PM CDT SAT APR 30 2016/
FOR 00Z TAFS... CLUSTERS OF TSRA HAVE EXITED NRN AL AND FAR SRN
MIDDLE TN. VFR CONDITIONS SHOULD PREVAIL THROUGH THE EVENING HOURS.
REDEVELOPMENT OF TSRA REMAINS PSBL LATE TONIGHT (09-12Z) SO HAVE
INCLUDED VCTS AND CIGS IN THE MVFR CATEGORY (~025AGL) FOR KMSL AND
KHSV. VFR CONDITIONS SHOULD THEN AGAIN PREVAIL AFTER 12Z, ALTHOUGH
MORE TSRA ARE PSBL AGAIN DURING THE AFTERNOON HOURS ON SUNDAY.

&&

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

$$

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


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