Area Forecast Discussion
Issued by NWS Huntsville, AL

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000
FXUS64 KHUN 040511 AAC
AFDHUN

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1211 AM CDT FRI SEP 4 2015

.UPDATE...
FOR 06Z TAFS

&&

.DISCUSSION...
/ISSUED 829 PM CDT THU SEP 3 2015/
DESPITE A LOSS OF DAYTIME HEATING...ENOUGH LIFT AND INSTABILITY
REMAINED IN/NEAR THE BOUNDARY LAYER. THUS...ISOLATED SHOWER ACTIVITY
CONTINUED EARLY THIS EVENING. ALTHOUGH THE SHOWERS WERE PRODUCING
BRIEFLY HEAVY RAINFALL...INDIVIDUAL CELLS WITHIN THIS ACTIVITY WERE
NOT PRODUCING MUCH ICING PER DUAL-POL OUTPUT...THUS FEW IF ANY
LIGHTNING STRIKES ARE EXPECTED (UNLESS DRAMATIC INCREASES IN
INTENSITY ARE REALIZED).

OTHERWISE AS HAS BEEN THE CASE THE PAST FEW NIGHTS...SURFACE HIGH
PRESSURE SITUATED NORTH OF THE AREA CONTROLLED THE WEATHER. THE HIGH
STAGNATING ACROSS THE EAST HAS ALLOWED FOR MUGGY CONDITIONS THIS
EVENING. A TROUGHING WEST AND RIDGING PATTERN OTHERWISE PREVAILED
OVER THE NORTH AMERICAN DOMAIN.

SHOWER ACTIVITY SHOULD GRADUALLY DIMINISH THIS EVENING AS THE OVERALL
ATMOSPHERE STABILIZES. UNLIKE A MOSTLY CLOUDY TO CLOUDY SKY LAST
NIGHT... ONLY A FEW CLOUDS WERE PRESENT THIS EVENING. THUS WITH HUMID
CONDITIONS...THERE ARE SOMEWHAT BETTER CHANCES OF FOG FORMING ACROSS
THE AREA BEFORE DAYBREAK FRI AM. WILL KEEP THE FOG AS PATCHY IN
COVERAGE. THAT BEING SAID...SOME OF THE FOG COULD BECOME LOCALLY
DENSE...ESPECIALLY IN THOSE FAVORED FOG PRONE AREAS SUCH AS IN WIND
SHELTERED VALLEYS AND NEAR BODIES WATER.

RSB

&&

.AVIATION...
FOR 06Z TAFS...
MVFR CONDITIONS FROM FOG/MIST SHOULD DEVELOP DURING THE COURSE OF
THE NIGHT...GIVEN HUMID CONDITIONS WITH LIGHT WINDS AND GENERALLY
CLEAR SKIES. VIS REDUCTIONS TO IFR...POSSIBLE LOWER HAVE BEEN KEPT AS
A TEMPO FOR PREDAWN TO AFTER DAYBREAK. ANY FOG/MIST PRESENT SHOULD
DISSIPATE BY 04/1400Z...WITH VFR WEATHER RETURNING AND CONTINUING
FOR THE REMAINDER OF THE TAF. THAT BEING SAID...STRONG DAYTIME
HEATING COULD LEAD TO CU/TCU FORMATION IN THE LATE MORNING...WITH
ISOLATED CONVECTION POSSIBLE...MAINLY EAST OF I65 IN THE AFTERNOON.

RSB

&&

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

$$

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


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