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WWUS20 KWNS 311955

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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 553

NWS STORM PREDICTION CENTER NORMAN OK

255 PM CDT THU OCT 31 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTH CENTRAL MISSOURI



* EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 255 PM UNTIL

  700 PM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE

  A FEW DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 40

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 30 MILES SOUTH OF

SPRINGFIELD MISSOURI TO 55 MILES NORTHEAST OF WEST PLAINS

MISSOURI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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 552...



DISCUSSION...A FEW STRONG TO POSSIBLY SVR TSTMS EXPECTED THROUGH

EARLY EVE IN ZONE OF STRONG MID-LVL COOLING/ASCENT ON POLEWARD SIDE

OF 90+ KT 500 MB JET STREAK. ELONGATED NATURE OF SFC PRESSURE TROUGH

AND ASSOCIATED RELATIVELY WEAK CONVERGENCE FIELD/VEERED LOW-LVL FLOW

WILL LIMIT NUMBER OF SUSTAINED STORMS...BUT ANY THAT DO FORM WILL BE

CAPABLE OF SVR HAIL AND LOCALLY DMGG WIND.



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 400. MEAN STORM

MOTION VECTOR 26055.





...CORFIDI

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