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268 

WWUS20 KWNS 070714

SEL1

SPC WW 070714

KSZ000-MOZ000-071400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 481

NWS STORM PREDICTION CENTER NORMAN OK

215 AM CDT WED AUG 7 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  EASTERN KANSAS

  WESTERN AND CENTRAL MISSOURI



* EFFECTIVE THIS WEDNESDAY MORNING FROM 215 AM UNTIL 900 AM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 85

STATUTE MILES EAST AND WEST OF A LINE FROM 5 MILES NORTH

NORTHEAST OF TOPEKA KANSAS TO 25 MILES WEST OF SPRINGFIELD

MISSOURI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).



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 478...WW 479...WW 480...



DISCUSSION...AN WELL-DEVELOPED MCS ACROSS EASTERN KANSAS WILL

CONTINUE TO MOVE EASTWARD INTO WESTERN MISSOURI OVER THE NEXT FEW

HOURS. THE AIRMASS AHEAD OF THE CONVECTION IS STRONGLY UNSTABLE WITH

MLCAPE VALUES ESTIMATED IN THE 3000 TO 4000 J/KG RANGE. THIS

COMBINED WITH A VERY MOIST BOUNDARY LAYER AND MODERATE DEEP LAYER

SHEAR SHOULD KEEP A SEVERE THREAT GOING WITH THE MCS THROUGH

DAYBREAK.



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 500. MEAN STORM

MOTION VECTOR 28035.





...BROYLES

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