FXUS64 KBMX 030006
AFDBMX
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE BIRMINGHAM AL
605 PM CST WED DEC 2 2009
.UPDATE...PUBLIC FORECAST AND AVIATION.
WILL UPDATE ZONES/GRIDS WITH EXPIRATION OF WIND ADVISORY SOUTHERN
COUNTIES.
&&
.SHORT TERM...TONIGHT THROUGH FRIDAY.
/PREVIOUS DISCUSSION: 313 PM CST WED DEC 2 2009/
UPPER LOW WILL CONTINUE TO LIFT THIS AFTERNOON AND EVENING.
TEMPERATURES HAVE SPIKED INTO THE 60S AND EVEN A FEW LOWER 70S
THIS AFTERNOON AS DRY AIR WRAPPED AROUND THE UPPER LOW AND CLEARED
OUT THE SKIES. HOWEVER, MUCH COOLER TEMPERATURES ARE EXPECTED
FROM THIS POINT ON.
CLOUDS SHOULD FILL BACK IN OVERNIGHT WITH MOSTLY CLOUDY CONDITIONS
PERSISTING THROUGH FRIDAY. THIS ALONG WITH COLD ADVECTION WILL
KEEP HIGH TEMPERATURES ON THE COOL SIDE WITH RANGES FROM THE UPPER
40S TO LOWER 50S. IT SHOULD ALSO HELP KEEP OVERNIGHT TEMPERATURES
IN THE 40S TONIGHT WITH LOWER TO MID 30S FRIDAY MORNING.
.LONG TERM...FRIDAY NIGHT THROUGH WEDNESDAY.
BY EARLY FRIDAY EVENING A NOTICEABLE SHORTWAVE SHOULD BE ROUNDING
THE BASE OF THE LONGWAVE TROUGH OVER SOUTHEASTERN TEXAS. AS IT
LIFTS NORTHEAST AND ACROSS THE AREA FRIDAY NIGHT AND SATURDAY
MORNING, SOME MOISTURE WILL GET PULLED FROM THE GULF AND BEGIN TO
OVERSPREAD CENTRAL ALABAMA. THIS IS A BIT DIFFERENT FROM THE 12Z
MODEL RUNS FROM YESTERDAY IN WHICH THE CONSENSUS SHOWED DRIER AND
COOLER CONDITIONS ACROSS THE AREA. THERMAL PROFILES SHOW A WINDOW
FOR SOME LIGHT SNOW TO DEVELOP ON THE NORTH SIDE OF THE
PRECIPITATION SHIELD FROM ROUGHLY 09Z SATURDAY AND POTENTIALLY
LASTING THROUGH 18Z. SO AT THIS POINT I WOULD EXPECT THE NORTHERN
HALF OF THE AREA TO SEE SOME LIGHT SNOWFALL SATURDAY MORNING WITH
A COLD RAIN TO THE SOUTH. SOME VERY LIGHT ACCUMULATIONS MAY BE
POSSIBLE ON ELEVATED SURFACES. NO WEATHER RELATED TRAVEL PROBLEMS
ARE ANTICIPATED. TEMPERATURES SHOULD ONLY MANAGE THE 40S SATURDAY
AFTERNOON WITH SOME SUNSHINE POSSIBLE THE SECOND HALF OF THE DAY
AS THE UPPER TROUGH SHIFTS EASTWARD.
HIGH PRESSURE BUILDS INTO THE AREA SUNDAY WITH THE NEXT
SIGNIFICANT CHANCE OF RAIN BY MID WEEK. TEMPERATURES WILL
GRADUALLY WARM SUNDAY THROUGH WEDNESDAY.
&&
.AVIATION...00Z TAF DISCUSSION.
WINDS STILL BREEZY BEHIND FRONT FOR THIS EVENING...WILL BEGIN TO
LIGHTEN SOME IN THE LATER EVENING HRS. LOW CIGS ARE EXPECTED TO
BECOME A PROBLEM WITH WRAP AROUND LOW MOISTURE. FOG SHOULD NOT BE A
PROBLEM AS WINDS SHOULD NOT TOO LIGHT. LOW CIGS SHOULD REMAIN IN
SOME RESPECT THROUGH EARLY AFTERNOON THURSDAY.
08
&&
.PRELIMINARY POINT TEMPS/POPS...
GADSDEN 39 49 31 50 31 / 30 10 0 10 30
ANNISTON 40 51 33 51 33 / 20 10 0 10 30
BIRMINGHAM 41 51 33 50 32 / 30 10 0 10 30
TUSCALOOSA 40 52 33 50 32 / 20 10 0 10 30
CALERA 41 53 35 50 32 / 20 10 0 10 40
AUBURN 44 54 36 53 35 / 10 10 0 10 40
MONTGOMERY 43 57 36 53 35 / 10 10 0 10 40
TROY 42 57 35 54 37 / 10 10 0 10 50
&&
.BMX WATCHES/WARNINGS/ADVISORIES...
WIND ADVISORY IN EFFECT UNTIL 9PM FOR NORTHERN HALF OF CENTRAL
ALABAMA: ZONES ALZ011>015-017>029.
&&
$$
