SWOMCD
SPC MCD 151908
GAZ000-ALZ000-152015-
MESOSCALE DISCUSSION 0422
NWS STORM PREDICTION CENTER NORMAN OK
0208 PM CDT SAT MAR 15 2008
AREAS AFFECTED...PARTS OF N-CENTRAL/NWRN GA...SMALL PART OF NERN AL
-- WRN/CENTRAL SUBSET OF WW 119.
CONCERNING...TORNADO WATCH 119...
VALID 151908Z - 152015Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 119 CONTINUES.
AS ADJOINING WARM SECTOR CONTINUES TO HEAT/DESTABILIZE
GRADUALLY...CONVECTION IS BUILDING AND BECOMING SVR INVOF AL/GA
STATE LINE...ALONG WRN SEGMENT OF COMBINED SFC WARM FRONT AND
OUTFLOW BOUNDARY. SFC WINDS IN WARM SECTOR HAVE VEERED IN RESPONSE
TO EWD SHIFT OF STRONGEST ISALLOBARIC FORCING ASSOCIATED WITH NERN
GA TORNADIC STORM...AND ASSOCIATED MESOCIRCULATION. HOWEVER...BULK
SHEAR ACROSS N-CENTRAL/NWRN GA WILL REMAIN FAVORABLE -- E.G. ROUGHLY
60 KT EFFECTIVE SHEAR MAGNITUDE FROM FFC RAOB AND RUC
SOUNDINGS...AND 0-1 KM SRH STILL EXCEEDING 200 J/KG BASED ON VWP AND
RAOB DATA. MODIFIED 18Z FFC RAOB INDICATES THAT SFC TEMPS LOW-MID
70S F AND DEW POINTS LOW 60S SUPPORT MLCAPES 1000-1500 J/KG AND VERY
WEAK CINH. STRENGTHENING SUPERCELLS OVER CALHOUN/CLEBURNE COUNTIES
AL GA AT 19Z ARE MOVING ENE 40-45 KT. ASSOCIATED RISK OF DAMAGING
HAIL/WIND AND POSSIBLY TORNADOES COULD AFFECT ATL METRO AREA DURING
20-21Z TIME FRAME THEN ENEWD TOWARD AREAS NEAR AND JUST N AHN IN
ENSUING 1-2 HOURS.
.EDWARDS.. 03/15/2008
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...GSP...FFC...BMX...
33578416 33518484 33608577 33938503 34208351 34278334
34098293 33898302 33718330
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