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rare PDS tornado watch
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 190
NWS STORM PREDICTION CENTER NORMAN OK
1110 AM CDT SUN APR 26 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
A LARGE PART OF CENTRAL AND NORTHEAST KANSAS
PARTS OF WESTERN AND NORTHERN OKLAHOMA
PARTS OF EASTERN TEXAS PANHANDLE
EFFECTIVE THIS SUNDAY MORNING AND EVENING FROM 1110 AM UNTIL 700
PM CDT.
..THIS IS A PARTICULARLY DANGEROUS SITUATION
DESTRUCTIVE TORNADOES...LARGE HAIL TO 4 INCHES IN DIAMETER...
THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE
POSSIBLE IN THESE AREAS.
DISCUSSION...STRONG DEEP LAYER SHEAR COUPLED WITH A VERY UNSTABLE
AIR MASS WILL RESULT IN SUPERCELLS DEVELOPING ALONG AND E OF FRONTAL
ZONE THAT EXTENDS FROM NCENTRAL KS TO TX PANHANDLE. STORMS WILL
INCREASE RAPIDLY IN NUMBER AND INTENSITY THRU THE AFTERNOON AS WARM
SECTOR CONTINUES TO DESTABILIZE WITH TORNADIC SUPERCELLS BECOMING
MOST LIKELY DURING LATER PORTIONS OF WATCH PERIOD. POTENTIAL FOR
LONG LIVED TORNADIC SUPERCELLS ACCOMPANIED BY VERY LARGE HAIL.