

784 

WWUS20 KWNS 261610

SEL0

SPC WW 261610

KSZ000-OKZ000-TXZ000-270000-



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.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE

MILES EAST AND WEST OF A LINE FROM 50 MILES WEST OF CLINTON

OKLAHOMA TO 65 MILES WEST NORTHWEST OF SAINT JOSEPH MISSOURI.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU0).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS.



OTHER WATCH INFORMATION...CONTINUE...WW 188...WW 189...



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.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 4 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 24035.





...HALES

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