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Mesoscale Discussion #0438 issued at 2334 UTC 10 April 2009
MESOSCALE DISCUSSION 0438
NWS STORM PREDICTION CENTER NORMAN OK
0634 PM CDT FRI APR 10 2009
   
AREAS AFFECTED...CNTRL AL...NRN/CNTRL GA...UPSTATE SC
   
CONCERNING...TORNADO WATCH 134...135...
   
VALID 102334Z - 110030Z
   
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 134...135...CONTINUES.
   
SEVERAL DISCRETE SUPERCELLS ALONG WITH SHORT-LINE SEGMENTS SHOULD
PROGRESS E/SEWD ACROSS SERN PORTION OF WW 134 INTO WW 135. LOCAL
AREAL EXTENSION MAY BE NEEDED ALONG THE SRN PERIPHERY OF WW 134 IN
AL. THREATS OF LARGE HAIL AND TORNADOES /A FEW OF WHICH COULD BE
SIGNIFICANT/...AND DAMAGING WINDS WILL CONTINUE.
   
AS OF 2330Z...NUMEROUS DISCRETE SUPERCELLS HAVE EVOLVED INTO
CNTRL/E-CNTRL AL AND NWRN GA...WITH A SHORT LINE SEGMENT CONSISTING
OF EMBEDDED SUPERCELLS ACROSS N-CNTRL GA. DESPITE THE ONSET OF
STABILIZATION WITH LOSS OF DAYTIME HEATING...A SWLY INFLUX OF UPPER
50S TO LOWER 60S SURFACE DEW POINTS SHOULD HELP OFFSET THIS TENDENCY
TO SOME EXTENT. MEANWHILE...AREA VWPS INDICATE A GRADUAL
STRENGTHENING TREND IN LOWER-LEVEL FLOW WHICH IS ENLARGING ALREADY
VERY FAVORABLE HODOGRAPHS FOR UPDRAFT ROTATION. AS
SUCH...SIGNIFICANT SEVERE POTENTIAL IS EXPECTED TO CONTINUE THROUGH
ABOUT 02-03Z.
   
..GRAMS.. 04/10/2009
   
   
ATTN...WFO...CAE...GSP...FFC...BMX...
   
LAT...LON   32288612 32378751 32738739 33158667 33908593 34268490
            34368377 34888281 35148226 35138134 34928092 34498107
            33338211 32798288 32428409 32278476 32288612 
               


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