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271 

WWUS20 KWNS 080605

SEL5

SPC WW 080605

KSZ000-MOZ000-081100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 745

NWS STORM PREDICTION CENTER NORMAN OK

105 AM CDT MON AUG 8 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EXTREME EAST CENTRAL AND SOUTHEAST KANSAS

       PARTS OF WEST CENTRAL AND SOUTHWEST MISSOURI



EFFECTIVE THIS MONDAY MORNING FROM 105 AM UNTIL 600 AM CDT.



HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 45

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 115 MILES WEST

NORTHWEST OF SPRINGFIELD MISSOURI TO 55 MILES NORTHEAST OF

SPRINGFIELD MISSOURI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 741...WW 742...WW

743...WW 744...



DISCUSSION...A SMALL MCS THAT FORMED IN THE WAA ZONE ACROSS ERN KS

HAS SHOWN A TENDENCY TO ACCELERATE ESEWD ALONG A DIFFUSE/RESIDUAL

BOUNDARY INTO WRN MO.  MODERATE INSTABILITY AND STEEP LAPSE RATES

WILL HELP MAINTAIN THE POTENTIAL FOR STRONG UPDRAFTS AND

PRECIPITATION LOADING...AND AN ASSOCIATED RISK FOR A FEW DAMAGING

GUSTS.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.

A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION

VECTOR 29030.





...THOMPSON

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