Area Forecast Discussion
Issued by NWS Huntsville, AL

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000
FXUS64 KHUN 310455
AFDHUN

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1155 PM CDT SUN AUG 30 2015

.UPDATE...
FOR 06Z TAFS

&&

.DISCUSSION...
/ISSUED 1002 PM CDT SUN AUG 30 2015/
REMNANTS OF THE CENTRAL GULF COAST CUTOFF UPPER LOW WILL CONTINUE TO
LIFT NORTHEASTWARD ACROSS THE LEE OF THE SOUTHERN APPALACHIANS
OVERNIGHT. WITH LITTLE EVIDENCE OF SYNOPTIC SCALE LIFT IN THE WAKE OF
THIS FEATURE...POPS WILL BE REDUCED TO NEAR ZERO FOR MAJORITY OF THE
REGION FOR REMAINDER OF THE NIGHT. THE ONLY EXCEPTION TO THIS WILL BE
ACROSS THE FAR SOUTHEASTERN COUNTIES OF THE FORECAST AREA... WHERE
SUBTLE LOW-LEVEL CONVERGENCE MAY CONTINUE TO RESULT IN THE
DEVELOPMENT OF A FEW LIGHT SHOWERS THROUGHOUT THE NIGHT -- AND A 20
POP WILL BE CARRIED IN THIS REGION. THE MAIN CONCERN OVERNIGHT WILL
BE THE POTENTIAL FORMATION OF FOG -- ESPECIALLY GIVEN AMOUNT OF
RAINFALL THE REGION HAS RECEIVED OVER THE LAST COUPLE OF DAYS.
CURRENT SATELLITE DATA CONTINUES TO INDICATE THE DEVELOPMENT OF A
VAST REGION OF STRATUS CLOUDS ACROSS CENTRAL/EASTERN ZONES...LIKELY
IN RESPONSE TO WEAK ASCENT ABOVE A SHALLOW DOME OF RELATIVELY COOLER
AIR BEING ADVECTED INTO THE REGION ON LIGHT EAST-NORTHEAST FLOW AT
THE SURFACE. WITH REGIONAL SURFACE OBS CONFIRMING CLOUD BASES IN THE
3-5 KFT LAYER...THE THREAT FOR SIGNIFICANT VISIBILITY ISSUES WILL BE
REDUCED AND WILL ONLY KEEP PATCHY FOG IN THE FORECAST AT THIS TIME.
OTHERWISE...TEMPERATURE/DEWPOINT AND WIND GRIDS LOOK TO BE ON TRACK
WITH NO CHANGES PLANNED AT THIS TIME.

70/DD

&&

.AVIATION...
FOR 06Z TAFS...NO CHANGES TO PREVIOUS AVIATION FORECAST REASONING.
ABUNDANT SFC MOISTURE...COUPLED WITH LGT E FLOW AND CLEARING SKIES
OVERNIGHT SHOULD ALLOW FOR RAPID SATURATION OF THE LOWER TROPOSPHERE
BTWN 31/06-08Z...WITH MVFR STRATUS AND FOG BECOMING A CONCERN
OVERNIGHT. WILL KEEP PREVAILING MVFR CONDS IN THE CURRENT TAFS...
ALONG WITH A TEMPO FOR IFR CIGS/VSBY BTWN 11-13Z. FOG WILL LIKELY
LIFT/DISSIPATE BY 14Z...WITH SCT/BKN STRATOCU IN THE 3-5 KFT LAYER
ANTICIPATED FOR REMAINDER OF TAF PERIOD -- ALONG WITH LGT/VRBL WINDS.

70/DD

&&

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

&&

$$

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


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