

766 

WWUS20 KWNS 262318

SEL5

SPC WW 262318

KSZ000-OKZ000-TXZ000-270800-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 195

NWS STORM PREDICTION CENTER NORMAN OK

615 PM CDT SUN APR 26 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTH CENTRAL INTO SOUTHEASTERN KANSAS

       WESTERN AND CENTRAL OKLAHOMA

       NORTHWEST TEXAS INCLUDING THE EASTERN PANHANDLE



EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 615 PM UNTIL

300 AM CDT.



...THIS IS A PARTICULARLY DANGEROUS SITUATION...



DESTRUCTIVE TORNADOES...LARGE HAIL TO 3 INCHES IN DIAMETER...

THUNDERSTORM WIND GUSTS TO 70 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 45 MILES WEST NORTHWEST OF

EMPORIA KANSAS TO 90 MILES SOUTHWEST OF WICHITA FALLS TEXAS.  FOR

A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU5).



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...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 190...TORNADO WATCH NUMBER 192. WATCH NUMBER 190 192

WILL NOT BE IN EFFECT AFTER 615 PM CDT. CONTINUE...WW 193...WW

194...



DISCUSSION...COMBINATION OF EXTREME LOW AND DEEP LAYER SHEAR...ALONG

WITH MODERATE INSTABILITY...WILL MAINTAIN ENHANCED RISK OF SEVERE

THUNDERSTORMS THROUGH THE EARLY MORNING HOURS TONIGHT.  ACTIVITY

WILL BE SUSTAINED AS STRONG VERTICAL MOTION OVERSPREADS THE REGION

AHEAD OF SHORTWAVE TROUGH MOVING ACROSS THE HIGH PLAINS.

ENVIRONMENT WILL FAVOR LONG-LIVED SUPERCELLS AND BOW ECHO

STRUCTURES.  TORNADO THREAT REMAINS HIGH WITH ANY SUSTAINED

SUPERCELLS...ALTHOUGH LOW LEVEL HODOGRAPHS WILL INCREASE AS LLJ

INTENSIFIES THIS EVENING WHICH SHOULD FURTHER INCREASE TORNADO

POTENTIAL.  VERY LARGE/DAMAGING HAIL AND DAMAGING WINDS WILL BE

ADDITIONAL HAZARDS.



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

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 23035.





...EVANS

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