WW 481 SEVERE TSTM KS MO 070715Z – 071400Z
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
via SPC Forecast Products http://www.spc.noaa.gov/products/watch/ww0481.html
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