The Good Friday Severe Weather Outbreak of April 10, 2009

Severe Thunderstorms, Heavy Rainfall and Dangerous Heat

Severe thunderstorms are expected today and Friday from the upper Midwest, central Great Lakes into the Ohio and mid-Mississippi Valley's. In addition, heavy rainfall threat increases on Friday across the Ohio Valley. Meanwhile, early summer-like heat wave across portions of southern Texas with new daily records are forecast today and through the weekend; The heat spreads across the Gulf States. Read More >

MESOSCALE DISCUSSION 0437 NWS STORM PREDICTION CENTER NORMAN OK 0511 PM CDT FRI APR 10 2009 AREAS AFFECTED...PORTIONS OF WRN/CNTRL SC...NERN/CNTRL GA CONCERNING...TORNADO WATCH 134... VALID 102211Z - 102315Z THE SEVERE WEATHER THREAT FOR TORNADO WATCH 134 CONTINUES. A NEW TORNADO WATCH WILL LIKELY BE ISSUED PRIOR TO 23Z DOWNSTREAM OF WW 134 ACROSS PORTIONS OF WRN/CNTRL SC AND NERN/CNTRL GA. DISCRETE SUPERCELLS HAVE RECENTLY DEVELOPED OUT AHEAD OF PRIMARY AXIS OF SUPERCELL CLUSTERS STRETCHING FROM NRN/CNTRL AL INTO NWRN GA. THIS ACTIVITY WILL PROGRESS EWD DOWNSTREAM OF WW 134 INTO EARLY EVENING. ALTHOUGH SURFACE DEW POINTS ARE MODEST /UPPER 40S TO MIDDLE 50S/ ACROSS E-CNTRL GA INTO CNTRL SC...STRENGTHENING SWLY LOW-LEVEL FLOW WILL RESULT IN MOISTENING WITH DEW POINTS LIKELY RISING INTO THE MIDDLE 50S TO LOWER 60S. THIS WILL LEAD TO INCREASING DESTABILIZATION AND EXPECTED MAINTENENCE OF SUPERCELLS AND ASSOCIATED SEVERE WEATHER THREATS GIVEN FAVORABLY LARGE LOWER-LEVEL HODOGRAPHS. ENHANCED TORNADIC POTENTIAL SHOULD EXIST WITH SUSTAINED DISCRETE SUPERCELLS ALONG WITH ANY TSTMS EVOLVING INVOF RESIDUAL OUTFLOW BOUNDARY DRAPED FROM NEAR AND TO SOP AS OF 22Z. ..GRAMS.. 04/10/2009 ATTN...WFO...CAE...GSP...FFC... LAT...LON 35068290 35318185 35288114 35078066 34278119 33078216 32638266 32468332 32398390 32678439 33518396 34528337 35068290