FXUS62 KFFC 051554 AAC
AFDFFC
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1054 AM EST SAT DEC 5 2009
.UPDATE...
ANOTHER QUICK UPDATE TO GO AHEAD AND CANCEL THE REST OF THE WINTER
WEATHER ADVISORY. MOISTURE CONTINUES TO MOVE RAPIDLY NORTHEAST
INTO THE CAROLINAS AND EVEN SEEING A LOT OF CLEARING SKIES IN THAT
AREA. TEMPS STILL LOOKING FINE WITH STRONG CAA ACROSS THE AREA.
UPDATED PRODUCTS WILL BE OUT SHORTLY.
TDP
&&
.PREV DISCUSSION... /ISSUED 944 AM EST SAT DEC 5 2009/
UPDATE...
WILL SEND AN UPDATE SHORTLY TO GO AHEAD AND EXPIRE THE WESTERN
PORTION OF THE WINTER WEATHER ADVISORY...MOISTURE IS BEGINNING TO
MOVE EAST AND BEST MOISTURE ALREADY MOVING OUT OF THE NORTHEAST
MOUNTAINS. WILL LEAVE ADVISORY UP FOR THE MOUNTAIN AREA AS SNOW IN
THOSE AREAS IS DIFFICULT TO DETECT ON RADAR. SOME LIGHT RAIN AND
SPRINKLES IN THE METRO AREA...BUT OVERALL NOT MUCH. TEMPS SEEM TO
BE ON TRACK THIS MORNING...SO NO OTHER CHANGES PLANNED AT THIS TIME.
TDP
PREV DISCUSSION... /ISSUED 437 AM EST SAT DEC 5 2009/
SHORT TERM /TODAY THROUGH MONDAY/...
A MIX OF PRECIP STARTING TO OVERSPREAD THE FORECAST AREA EARLY
THIS MORNING...WITH PREDOMINANTLY LIGHT SNOW OVER NORTHWEST GA
AND LIGHT RAIN IN CENTRAL GA. AT 3AM...WE RECEIVED A REPORT THAT
LIGHT SNOW WAS FALLING NEAR LOOKOUT MOUNTAIN AND A LIGHT DUSTING
OF SNOW WAS ACCUMULATING IN GRASSY AREAS. REPORTS FROM NORTHERN
AND CENTRAL ALABAMA SUGGEST SNOW ACCUMULATIONS LESS THAN A HALF
INCH ARE COMMON. BRIGHT-BANDING IN RADAR ECHOES JUST NORTH OF I-20
OVER HARALSON INTO PAULDING COUNTY SUGGEST MIXED PRECIP OR A WET
SNOW WAS MOVING INTO THOSE AREAS. TEMPS STILL AROUND 40 IN MOST
LOWER ELEVATION LOCATIONS THIS MORNING LIKELY PREVENTING MUCH IN
THE WAY OF ACCUMULATION YET. TEMPS SHOULD START DROPPING QUICKLY
NOW THAT PRECIP IS BEGINNING...APPROACHING FREEZING BY SUNRISE IN
THE NORTHWEST WHERE DEWPOINTS/WET BULB TEMPS ARE NEAR OR BELOW 32
DEG. STILL LOOK ON TRACK WITH ACCUMULATIONS THIS MORNING IN THE
ADVISORY AREA GENERALLY LESS THAN A INCH...WITH LOCALLY HIGHER 1
TO 2 INCHES IN THE MOUNTAINS.
THE MID/UPPER LEVEL SHORTWAVE IS RACING EASTWARD ACROSS ALABAMA
THIS MORNING WITH THE BACK EDGE OF THE PRECIP NEARING THE AL/GA
STATE LINE AROUND 12Z...AND SHOULD CLEAR GA BY 18Z. SKIES CLEARING
SHARPLY BEHIND THIS TROUGH AXIS. THE ONLY AREAS THAT MAY SEE A FEW
LIGHT SNOW SHOWERS BEYOND THAT WILL BE IN THE HIGHER ELEVATION
NORTHWEST SLOPES OF THE MOUNTAINS...BUT ALL PRECIP SHOULD EXIT OUR
AREA BY LATE AFTERNOON.
HIGH PRESSURE BUILDS INTO THE SOUTHERN APPALACHIANS TONIGHT
BRINGING CLEAR SKIES AND LIGHT WINDS...ALLOWING FOR EFFECTIVE
RADIATIONAL COOLING AND A CHILLY SUNDAY MORNING. AMPLE SUNSHINE ON
SUNDAY AND WARM/MOIST ADVECTION ON MONDAY WILL NUDGE TEMPERATURES
A FEW DEGREES UPWARD.
LONG TERM /MONDAY NIGHT THROUGH FRIDAY/...
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. A COOL AIRMASS BUILDS IN LATE IN THE WEEK BEHIND THE FRONT.
RRH
AVIATION...
MVFR TO VFR CONDITIONS AT THE MOMENT WITH LIGHT RAIN IN CENTRAL GA
AND LIGHT SNOW IN NORTH GA. WINDS ARE MAINLY OUT OF THE NW AND ARE
EXPECTED TO STAY THAT WAY THROUGH THE TAF PERIOD. WIND SPEED ARE IN
THE 5 TO 10 KT RANGE AT THE MOMENT BUT SHOULD SEE WINDS INCREASE
INTO THE 10-15KT RANGE WITH HIGHER GUST BETWEEN 16Z SAT AND 02Z SUN.
PRECIPITATION WILL BE A MIXED BAG THIS MORNING WITH SNOW ACROSS
NORTH GA AND RAIN ACROSS THE ATL AREA SOUTHWARD. THE ATL AIRPORT MAY
SE SOME PERIODS OF MIXED RAIN AND SNOW BUT NO ACCUMULATIONS
EXPECTED. CEILINGS GOING FROM SCT TO OVC BUT STAYING AROUND 3000FT.
SHOULD SEE CEILINGS SCT OUT BY 18Z AND CLR OUT BY 00-02Z.
&&
.PRELIMINARY POINT TEMPS/POPS...
ATHENS 45 26 53 35 55 / 50 0 0 10 20
ATLANTA 43 27 52 37 55 / 20 0 0 10 20
BLAIRSVILLE 38 23 48 29 47 / 70 0 0 10 20
CARTERSVILLE 40 22 50 30 54 / 30 0 0 10 20
COLUMBUS 47 28 55 38 60 / 10 0 0 10 20
GAINESVILLE 41 27 51 34 52 / 50 0 0 10 20
MACON 51 25 54 35 61 / 20 0 0 10 20
ROME 40 23 51 34 52 / 40 0 0 10 20
PEACHTREE CITY 45 22 53 31 55 / 20 0 0 10 20
VIDALIA 53 28 57 37 65 / 50 0 0 10 20
&&
.FFC WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
