Area Forecast Discussion
Issued by NWS Birmingham, AL

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FXUS64 KBMX 210556
AFDBMX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1156 PM CST THU NOV 20 2014

.UPDATE...
FOR 06Z AVIATION.

&&

.DISCUSSION...

A WEAK SURFACE FRONT WAS DRAPED OVER CENTRAL ALABAMA THIS EVENING.
SLIGHTLY LOWER SURFACE DEW POINTS NORTH BUT THAT`S ABOUT IT. HIGH
PRESSURE TAKES OVER ON FRIDAY.

AN UPPER LEVEL IMPULSE WAS APPROACHING THE AREA FROM THE WEST.
THIS FEATURE WAS ALLOWING MOISTURE INCREASES AND SOME
LIFT...PRODUCING CLOUDS IN THE 4-8K FT RANGE. ADDITIONALLY...SOME HIGH
CLOUDS WERE OVERHEAD. THE LOWEST CLOUDS WERE MORE NUMEROUS WEST
AND NORTH LEADING TO COOLER TEMPS SOUTH AND EAST OVERNIGHT...WITH
A FEW SPOTS NEAR FREEZING. A FEW OF THE HI RES MODELS INDICATE
SOME PATCHY FOG DEVELOPING SOUTH LATE TONIGHT...BUT THINK THIS
WILL BE LIMITED IN SCOPE AND DID NOT MENTION AT THIS TIME.

OTHERWISE...ADJUSTED THE HOURLY TRENDS. UPDATES ALREADY OUT.

75


&&

.AVIATION...
06Z TAF DISCUSSION.

VFR CONDITIONS ARE EXPECTED THROUGH THE FORECAST PERIOD. LOW
CONFIDENCE EXISTS IN TERMS OF THE POSSIBILITY OF FOG DEVELOPMENT
ACROSS THE SOUTHERN TERMINALS OF KMGM AND KTOI OVERNIGHT TONIGHT.
WITH MID-LEVEL CLOUD COVER MOVING ACROSS MUCH OF THE STATE...THAT
SHOULD HELP PREVENT ENOUGH COOLING FOR PATCHY FOG DEVELOPMENT.
THEREFORE...HAVE TAKEN OUT THE MVFR VIS BUT WILL CONTINUE TO
MONITOR TRENDS OVERNIGHT FOR ANY POSSIBLE AMENDMENTS.
MEANWHILE...THE MID-LEVEL CLOUDS WILL CONTINUE ACROSS THE
REMAINDER OF CENTRAL ALABAMA BUT NOT EXPECTED TO DROP INTO MVFR
CATEGORY. CLOUDS WILL EVENTUALLY THIN THROUGH THE LATE MORNING
HOURS ON FRIDAY. SURFACE WINDS WILL REMAIN LIGHT FROM THE EAST TO
SOUTHEAST THROUGH THE FORECAST PERIOD.

56/GDG

&&

.PRELIMINARY POINT TEMPS/POPS...
GADSDEN     30  57  37  59  50 /   0   0   0  10  90
ANNISTON    35  59  38  59  50 /   0   0   0  10  90
BIRMINGHAM  38  60  42  62  54 /   0   0   0  10  90
TUSCALOOSA  40  64  44  64  56 /  10  10  10  10 100
CALERA      39  62  41  62  54 /   0   0   0  10  90
AUBURN      40  62  42  61  52 /   0   0   0  10  90
MONTGOMERY  37  66  41  65  55 /   0   0   0  10  90
TROY        36  64  42  65  57 /   0   0   0  10  90

&&

.BMX WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

$$







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