MD 1515 CONCERNING
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MESOSCALE DISCUSSION 1515
NWS STORM PREDICTION CENTER NORMAN OK
0221 PM CDT SAT JUL 31 2010
AREAS AFFECTED...MUCH OF GA AND SC
CONCERNING...SEVERE THUNDERSTORM WATCH 552...
VALID 311921Z - 312015Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 552
CONTINUES.
LOCAL WFO AREAL EXTENSION APPEARS TO BE NEEDED ACROSS PART OF
CENTRAL GA.
MID-AFTERNOON SURFACE ANALYSIS CONTINUED TO SHOW A WARM FRONT
EXTENDING FROM NWRN-SERN GA. AT 19Z...REGIONAL RADARS SHOWED TSTMS
CONTINUING TO ADVANCE SSEWD THROUGH FAR NRN GA AND INTO FAR NWRN
SC...WITH DOWNSTREAM AIR MASS REMAINING MODERATELY-STRONGLY
UNSTABLE. ADDITIONAL STORMS HAVE ALSO DEVELOPED FARTHER TO THE S
ALONG AN APPARENT ZONE OF LOW LEVEL CONVERGENCE ORIENTED NE-SW...
EXTENDING FROM GREENWOOD COUNTY SC SWWD INTO GA WHERE IT INTERSECTS
THE WARM FRONT IN LAURENS COUNTY...AND THEN STRETCHES TO SWRN GA.
DEEP LAYER SHEAR REMAINS STRONGEST ACROSS SC INTO ERN GA AND THUS
WILL SUPPORT THE GREATEST POTENTIAL FOR ORGANIZED STORMS. THE SWRN
EXTENT OF WW 552 INTO CENTRAL GA WHERE THE NE-SW BOUNDARY INTERSECTS
THE WARM FRONT...WEAKER DEEP LAYER SHEAR SUGGEST MULTICELLS WILL BE
THE PRIMARY STORM MODE. STEEP LOW LEVEL LAPSE RATES GIVEN STRONG
SURFACE HEATING ALONG AND W OF THE WARM FRONT WILL FAVOR STRONG WIND
GUST POTENTIAL WITH TSTMS IN CENTRAL GA AND POSSIBLY FARTHER S INTO
SRN GA.
..PETERS.. 07/31/2010
ATTN...WFO...ILM...CHS...CAE...GSP...JAX...MRX...FFC...TAE...
HUN...
LAT...LON 32398359 33168423 33678500 33958536 34978561 34988334
35168189 33957995 32947906 31178093 31038259 30688287
30918405 32378351 32398359
