SWOMCD
SPC MCD 241740
ARZ000-TXZ000-OKZ000-241945-
MESOSCALE DISCUSSION 0560
NWS STORM PREDICTION CENTER NORMAN OK
1240 PM CDT TUE APR 24 2007
AREAS AFFECTED...ERN OK/NERN TX
CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE
VALID 241740Z - 241945Z
WE ARE MONITORING THE ENVIRONMENT E OF WW 172 AND 174 FOR EVOLVING
SEVERE POTENTIAL AND POSSIBLE WW ISSUANCE.
AREA OF EXPANSIVE CLOUD COVER ACROSS THE NERN QUARTER OF TX
CONTINUES TO HINDER DESTABILIZATION...DESPITE MOIST BOUNDARY LAYER.
STORMS CONTINUE TO DEVELOP/INCREASE E OF MAIN CONVECTIVE LINE --
ALONG ERN EDGE OF WW 174...ALONG WRN FRINGE OF THICKER CLOUD COVER.
WHILE DEGREE OF INSTABILITY REMAINS LIMITED...LATEST FORT WORTH TX
AND GRANGER/WACO TX WSR-88D VWPS INDICATE SHEAR PROFILES FAVORABLE
FOR SUPERCELLS. WITH LOW-LEVEL SHEAR SUFFICIENT ATTM FOR LOW-LEVEL
ROTATION AND DEWPOINTS NEAR 70/LOW DEWPOINT DEPRESSIONS ALSO
FAVORABLE...THREAT FOR TORNADOES/SEVERE WEATHER APPEARS TO BE
INCREASING ACROSS THIS REGION -- WHICH MAY REQUIRE WW ISSUANCE IN
THE NEXT HOUR OR SO.
.GOSS.. 04/24/2007
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...LZK...SHV...TSA...FWD...OUN...
31099788 31309840 34679616 35759602 35939440 34319400
32139577 31369662
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