

683 

WWUS20 KWNS 150049

SEL5

SPC WW 150049

KSZ000-NEZ000-SDZ000-150800-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 415

NWS STORM PREDICTION CENTER NORMAN OK

645 PM MDT SUN JUN 14 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       WESTERN KANSAS

       WESTERN NEBRASKA

       SOUTHWEST SOUTH DAKOTA



EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 645 PM UNTIL

200 AM MDT.



TORNADOES...HAIL TO 2.5 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 60 STATUTE

MILES EAST AND WEST OF A LINE FROM 50 MILES NORTH NORTHEAST OF

RAPID CITY SOUTH DAKOTA TO 65 MILES SOUTHEAST OF GOODLAND KANSAS.

 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...CONTINUE...WW 407...WW 409...WW

410...WW 411...WW 412...WW 413...WW 414...



DISCUSSION...SCTD SUSTAINED STORMS/SUPERCELLS EXPECTED TO

PERSIST/DEVELOP OVER WW THROUGH LATE TONIGHT.  TWO MAIN FOCUS AREAS

EXPECTED ARE /1/ NW KS AND SW NEB...ON NRN FRINGE OF 45-50 KT WSWLY

MID LVL FLOW ASSOCIATED WITH CO UPR IMPULSE...AND /2/ SW SD...IN

AREA OF ENHANCED SELY LOW LVL FLOW SE OF ERN MT/WY LEE TROUGH.  SVR

HAIL...DMGG WIND...AND DEPENDING ON STORM MODE...TORNADOES MAY

OCCUR.



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

SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE

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

550. MEAN STORM MOTION VECTOR 26030.





...CORFIDI

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