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Area Forecast Discussion

734
FXUS64 KBMX 162030
AFDBMX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BIRMINGHAM AL
330 PM CDT WED APR 16 2014

.SHORT TERM...TONIGHT THROUGH FRIDAY NIGHT.

HIGH PRESSURE WILL CONTINUE TO DOMINATE TONIGHT AND FRIDAY...BUT
THE AIR MASS WILL SLOWLY MOISTEN DURING THIS PERIOD AS LOW LEVEL
ATLANTIC MOISTURE ADVECTS INTO THE REGION. ANOTHER CHILLY NIGHT
ON TAP TONIGHT AS TEMPERATURES FALL INTO THE 40S. A FEW LOCATIONS
ACROSS EAST ALABAMA MAY FALL INTO THE MIDDLE 30S...BUT MOST AREAS
WILL STAY WELL ABOVE FREEZING. CUMULUS CLOUDS WILL SPREAD INTO
SOUTHEAST ALABAMA LATE TONIGHT AND SPREAD NORTHWEST DURING THE DAY
THURSDAY. THE NAM MODEL DOES SHOW SOME SHOWERS DEVELOPING ACROSS
WEST ALABAMA ALONG THE LEADING EDGE OF A WEDGE FRONT...BUT IT IS
AN OUTLIER AND WILL KEEP RAIN FREE CONDITIONS IN THE FORECAST FOR
THURSDAY. BY THURSDAY NIGHT...AN DIGGING SHORT WAVE TROF WILL PUSH
INTO THE SOUTHERN PLAINS STATES AND PULL GULF MOISTURE NORTHWARD.
SHOWERS WILL INCREASE ACROSS SOUTH ALABAMA AFTER MIDNIGHT THURSDAY
NIGHT AS THE SHORT WAVE TROF APPROACHES THE MISSISSIPPI RIVER.
SHOWERS WILL INCREASE IN COVERAGE DURING THE DAY FRIDAY AS THE
SHORT WAVE TROF SHIFTS EASTWARD. THE MODELS ARE IN FAIRLY GOOD
AGREEMENT IN DEVELOPING AN MCS OFF THE NE FLORIDA COAST AND
TRACKING IT NORTHEAST INTO SOUTHERN GEORGIA FRIDAY NIGHT. IN THIS
SCENARIO...THE BEST CHANCES FOR RAIN WILL BE ACROSS THE SOUTHEAST
COUNTIES...AND RAISED RAIN CHANCES SLIGHTLY FOR THE SOUTHEAST
COUNTIES FOR FRIDAY NIGHT. DUE TO A PERSISTENT EASTERLY LOW LEVEL
FLOW...THE AIR MASS REMAINS FAIRLY STABLE ON FRIDAY AND FRIDAY
NIGHT...AND REMOVED THUNDERSTORM WORDING AND MENTIONED ONLY
SHOWERS. HIGH TEMPERATURES THE NEXT FEW DAYS WILL BE BELOW AVERAGE
DUE TO EASTERLY FLOW ALONG WITH THE CLOUDS AND RAIN ON FRIDAY.

58/ROSE


.LONG TERM...SATURDAY THROUGH WEDNESDAY.

IT STILL LOOKS LIKE A RAIN FREE WEEKEND ACROSS CENTRAL ALABAMA AS
AN UPPER RIDGE BUILDS OVER THE SOUTHEAST STATES. TEMPERATURES WILL
WARM INTO THE UPPER 70S ON SATURDAY AND LOWER 80S BY SUNDAY. THE
GFS MODEL HAS BACKED OFF THE RAIN CHANCES SUNDAY AND MONDAY...AND
IS NOW MORE IN LINE WITH THE SLOWER AND DRIER ECMWF AND CANADIAN
MODELS. SIMILAR TO THE PREVIOUS SYSTEM...A SHORT WAVE TROF WILL
MOVE INTO THE SOUTHERN PLAINS AND TRACK EASTWARD TOWARDS ALABAMA.
AN UPPER LOW OFF THE GEORGIA COAST WILL HINDER THE RETURN FLOW OF
GULF MOISTURE INTO THE CENTRAL GULF COAST REGION...AND THE MODELS
ARE NOT SHOWING MUCH QPF AS THE SHORT WAVE TROF MOVES ACROSS THE
AREA. IT NOW LOOKS LIKE TUESDAY MAY BE THE DAY WITH THE HIGHEST
COVERAGE OF RAINFALL. DE TO THE LACK OF RETURN FLOW..SURFACE
DEWPOINTS ARE FORECAST TO STAY BELOW 60 DEGREES...SO ANY STORMS
SHOULD STAY BELOW SEVERE LIMITS...AND EVEN THUNDERSTORM CHANCES
ARE NOT THAT HIGH. THE RAIN SHOULD MOVE OUT OF THE AREA TUESDAY
NIGHT AS THE SHORT WAVE TROF PUSHES OUT OF THE AREA.


58/ROSE

&&

.AVIATION...
18Z TAF DISCUSSION.

VFR CONDITIONS FOR THE REMAINDER OF THE DAY. WINDS GENERALLY EAST
TO SOUTHEAST BETWEEN 5 AND 10 KTS. BY MID MORNING
TOMORROW...RETURN FLOW WILL BRING IN A DECENT MOIST LAYER BETWEEN
925MB AND 850MB. WILL INTRODUCE A VFR CEILING AT TOI AND MGM FOR
TOMORROW BUT THIS COULD WIND UP BEING MVFR LATER ON.

NOTE...THE NATIONAL WEATHER SERVICE WILL BE ISSUING SEASONAL
TERMINAL FORECASTS FOR THE TALLADEGA MUNICIPAL AIRPORT (KASN) IN
TALLADEGA...ALABAMA. THE FORECASTS WILL BE ISSUED FROM APRIL 20TH
00Z THROUGH AT LEAST MAY 8TH 00Z. DUE TO THE LIMITED AVAILABILITY
OF OBSERVATIONS...KASN TAF WILL HAVE AMD NOT SKED APPENDED TO THE
END OF THE FORECAST.

88


&&

.PRELIMINARY POINT TEMPS/POPS...
GADSDEN     36  64  45  66  43 /   0  10  20  30  10
ANNISTON    39  65  48  67  46 /   0  10  20  30  10
BIRMINGHAM  41  66  50  67  49 /   0  10  20  30  10
TUSCALOOSA  40  69  52  68  48 /   0  10  30  30  10
CALERA      41  68  52  68  49 /   0  10  20  30  10
AUBURN      41  64  50  64  48 /  10  10  20  40  20
MONTGOMERY  41  69  54  68  50 /  10  10  30  40  20
TROY        42  68  53  65  50 /  10  10  30  40  30

&&

.BMX WATCHES/WARNINGS/ADVISORIES...
RED FLAG WARNING UNTIL 6 PM CDT THIS EVENING FOR ALL OF CENTRAL
ALABAMA.

&&

$$







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