FXUS62 KFFC 060056 AAB
AFDFFC
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
756 PM EST SAT DEC 5 2009
.UPDATE...
TEMPS AND OTHER FIELDS ARE RIGHT ON THE MONEY FOR THE EVENING...SO I
WILL NOT BE ISSUING AN UPDATED PACKAGE. TEMPS ARE FALLING INTO THE
LOWER 30S ALREADY SO MINS IN THE 20 LOOKS RIGHT. HIGH CLOUDS
APPROACHING FROM THE WEST AND MID 20 DEWPOINTS WILL HELP KEEP THE
MINS FROM DROPPING ANY MORE THAN FORECAST.
.SHORT TERM /TONIGHT THROUGH MONDAY NIGHT/...
LATEST SATELLITE AND SURFACE OBS SHOW THE COLD AIR SC DISSIPATING
OVER THE FORECAST AREA AT THIS TIME. HIGH PRESSURE CENTERED OVER
THE LOWER MS RIVER VALLEY WILL MOVE EAST PRODUCING CLEAR SKIES
AND CONTINUED COLD AIR ADVECTION OVER GEORGIA TONIGHT. EXPECTED
MIN TEMPS IN THE 20S TO LOWER 30S WILL BE GENERALLY THE COLDEST
SO FAR THIS SEASON WITH A HARD FREEZE IN MANY LOCATIONS. THE HIGH
WILL MOVE TO THE MIDDLE ATLANTIC STATES THROUGH SUNDAY AND INTO
THE ATLANTIC ON MONDAY. A MOIST RETURN FLOW WILL DEVELOP OVER
GA MONDAY AND WILL COMBINE WITH A WEAK UPPER LEVEL DISTURBANCE
TO PRODUCE SLIGHT CHANCE POPS FOR RAIN. A BLEND OF MET/MAV MOS
TEMPS WERE ACCEPTED.
.LONG TERM /TUESDAY THROUGH SATURDAY/...
GLOBAL MODELS AND ENSEMBLES CONTINUE TO DEPICT A HEALTHY UPPER
LEVEL SYSTEM MOVING ONSHORE FROM THE PACIFIC ON MONDAY...SPAWNING
RATHER STRONG LEE CYCLOGENESIS OVER THE CENTRAL/SOUTHERN PLAINS ON
TUESDAY. THE POWERFUL LOW SHOULD REACH THE GREAT LAKES BY
WEDNESDAY...WITH A TRAILING COLD FRONT SWEEPING THROUGH GA AT THAT
TIME. THE 24 HOURS PRIOR TO THAT FROPA LOOKS RATHER WET
LOCALLY...WITH MOIST GULF AIR OVERRUNNING THE PREEXISTING WEDGE
HIGH. LONG RANGE MODELS SHOW QPF AMOUNTS OF 1 TO 2 INCHES OF RAIN
AT THIS TIME. A COOL AIRMASS BUILDS IN LATE IN THE WEEK BEHIND
THE FRONT.
&&
.AVIATION...
VFR CONDITIONS EXPECTED AT ALL TAF SITES THROUGH THIS FORECAST
PERIOD. AREA OF MVFR CEILINGS OVER NORTHEAST GEORGIA WILL DISSIPATE
BY 04Z. WEST TO NORTHWEST WINDS 10 TO 20 KTS WILL DIMINISH TO 5 KTS
OR LESS BY 06Z...BECOMING NORTHEAST BY 12Z.
&&
.PRELIMINARY POINT TEMPS/POPS...
ATHENS 27 53 33 54 39 / 0 0 5 10 10
ATLANTA 28 54 36 54 43 / 0 0 5 20 10
BLAIRSVILLE 24 47 28 48 36 / 0 0 5 20 10
CARTERSVILLE 24 51 31 50 40 / 0 0 5 20 10
COLUMBUS 29 54 37 61 47 / 0 0 5 20 10
GAINESVILLE 28 48 33 49 42 / 0 0 5 20 10
MACON 28 55 35 62 45 / 0 0 10 10 10
ROME 25 51 33 54 39 / 0 0 10 20 10
PEACHTREE CITY 25 54 30 54 39 / 0 0 5 20 10
VIDALIA 29 55 37 63 47 / 0 0 5 5 10
&&
.FFC WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
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