MESO: Mesoscale Discussion 1449

ACUS11 KWNS 052313
SWOMCD
SPC MCD 052312
GAZ000-FLZ000-ALZ000-MSZ000-060015-

MESOSCALE DISCUSSION 1449
NWS STORM PREDICTION CENTER NORMAN OK
0612 PM CDT SUN JUL 05 2009

AREAS AFFECTED...PARTS OF CENTRAL/SRN AL INTO CENTRAL/SRN GA AND FAR
NRN FL

CONCERNING...SEVERE THUNDERSTORM WATCH 550...

VALID 052312Z - 060015Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 550
CONTINUES.

THREAT FOR STRONG WINDS APPEARS TO BE INCREASING ACROSS EAST CENTRAL
AL TO CENTRAL GA EARLY THIS EVENING ATTENDANT TO LEADING EDGE OF AN
MCS CURRENTLY EXTENDING FROM TALLADEGA TO NRN LOWNDES COUNTIES AL.
A FEW COUNTIES ALONG THE NRN EXTENT OF WW 550 IN CENTRAL GA MAY NEED
TO BE ADDED TO THIS WATCH WITH THE LINE OF TSTMS EXPECTED TO REACH
TROUP COUNTY GA AROUND 00Z.

AT 23Z...REGIONAL RADARS INDICATED A NWD MOVING OUTFLOW BOUNDARY
THAT EMANATED FROM THE SRN GA/SERN AL MCS EXTENDED FROM EAST CENTRAL
AL /JUST N OF AUO/ INTO CENTRAL GA /35 S ATL/. THE LINE OF TSTMS
HAS INCREASED IN FORWARD SPEED DURING THE LAST HOUR /35-40 KT/...
WITH THE LINE TRACKING EWD ALONG AN INSTABILITY GRADIENT. GIVEN THE
INCREASE IN FORWARD SPEED AND DEVELOPMENT OF A COLD POOL...THREAT
FOR STRONGER WIND GUSTS WILL BE GREATER FROM EAST CENTRAL AL INTO
PARTS OF CENTRAL GA.

FARTHER SE OVER SERN AL/SRN GA...MAIN THREAT APPEARS TO BE
CONTINUING TO TRANSITION TO HEAVY RAINFALL RATES /REFER TO SPC
MESOSCALE DISCUSSION 1447 FOR MORE DETAILS/. HOWEVER...GIVEN
LOCATIONS ALONG SRN PERIPHERY OF THIS MCS WITH SURFACE
TEMPERATURE-DEWPOINT SPREADS 20-25 DEGREES...A FEW STRONG WET
MICROBURSTS REMAIN POSSIBLE FROM FAR SERN AL/GA INTO ADJACENT PARTS
OF FAR NRN FL.

..PETERS.. 07/05/2009

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...CHS...CAE...JAX...FFC...TAE...BMX...MOB...

LAT...LON 31158849 32328833 33108800 32908699 32938648 33318639
33398506 33468302 33268225 32128210 31838237 31318311
31008339 30728382 30748490 30818552 31118634 31158849

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