

380 

WWUS20 KWNS 080351

SEL7

SPC WW 080351

KSZ000-080800-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 47

NWS STORM PREDICTION CENTER NORMAN OK

950 PM CST SAT MAR 7 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTH CENTRAL INTO EAST CENTRAL KANSAS



EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 950 PM

UNTIL 200 AM CST.



HAIL TO 1.5 INCHES 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 40 MILES SOUTH

SOUTHWEST OF HUTCHINSON KANSAS TO 55 MILES NORTH NORTHEAST OF

CHANUTE KANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).



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...THIS SEVERE THUNDERSTORM WATCH REPLACES

SEVERE THUNDERSTORM WATCH NUMBER 45. WATCH NUMBER 45 WILL NOT BE

IN EFFECT AFTER 950 PM CST. CONTINUE...WW 46...



DISCUSSION...THUNDERSTORMS WILL CONTINUE TO TRAIN ALONG A

SLOW-MOVING FRONT FROM S CENTRAL INTO E CENTRAL KS FOR THE NEXT FEW

HOURS.  A 50 KT LLJ AND EJECTING MID LEVEL TROUGH WILL FOCUS ASCENT

ALONG THE FRONT AND SUPPORT CONTINUED THUNDERSTORM DEVELOPMENT UNTIL

THE SURFACE WAVE LIFTS NEWD INTO MO BY ABOUT 09Z.  INSTABILITY AND

VERTICAL SHEAR WILL REMAIN SUFFICIENT FOR THE PRODUCTION OF AT LEAST

ISOLATED LARGE HAIL AND DAMAGING WINDS.



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM

MOTION VECTOR 25040.





...THOMPSON

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