SWOMCD
SPC MCD 300135
TXZ000-OKZ000-300330-
MESOSCALE DISCUSSION 0621
NWS STORM PREDICTION CENTER NORMAN OK
0835 PM CDT SUN APR 29 2007
AREAS AFFECTED...NWRN TX
CONCERNING...SEVERE THUNDERSTORM WATCH 199...
VALID 300135Z - 300330Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 199
CONTINUES.
WIDESPREAD DEEP CONVECTION CONTINUES ALONG AND NORTH OF WELL-DEFINED
CONVECTIVE OUTFLOW BOUNDARY FROM NEAR ABI SWWD TO SJT AND THEN WWD
TO FST. MESOSCALE LIFT ACROSS THE BOUNDARY COUPLED WITH LARGE SCALE
ASCENT WITHIN DIFFLUENT FLOW AHEAD OF UPPER LOW WILL MAINTAIN
ORGANIZED MULTICELLULAR ACTIVITY. ONE WELL ESTABLISHED BOWING LINE
SEGMENT...CURRENTLY ENTERING WRN REAGAN COUNTY IN TORNADO WATCH
200...SHOULD CONTINUE TO MOVE EAST INTO SRN PARTS OF SEVERE TSTM
WATCH 199 IN THE NEXT HOUR. THIS ACTIVITY APPEARS FAVORABLY ORIENTED
TO THE OUTFLOW BOUNDARY TO MAINTAIN STRONG LOW LEVEL INFLOW AND
SHEAR. UNSTABLE AIR MASS SOUTH AND EAST OF THIS CONVECTION REMAINS
UNPERTURBED SO SEVERE POTENTIAL ACROSS SRN PARTS OF WATCH 199 SHOULD
CONTINUE.
DESPITE MODEST LARGE SCALE SUPPORT FOR UPWARD MOTION OVER NWRN
TX...STORMS IN THIS REGION ARE MORE REMOVED FROM UNSTABLE INFLOW.
EXPECT THAT NRN PARTS OF WATCH 199 WILL BEGIN TO BE CLEARED OVER THE
NEXT HOUR.
.CARBIN.. 04/30/2007
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...FWD...OUN...SJT...LUB...MAF...
30739946 30710011 31110013 31080124 31680128 31620274
32100278 32090163 32530165 32480111 32950119 32970107
33400106 33360049 33840052 33810001 34559998 34399968
34259923 34169896 32979894 32959910 32109909 32089922
31469918 31419940 31539957 30959961 30949947
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