WW 239 TORNADO KS OK TX 291725Z – 300300Z
URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 239 NWS STORM PREDICTION CENTER NORMAN OK 1225 PM CDT WED MAY 29 2013 THE NWS STORM PREDICTION CENTER HAS ISSUED A * TORNADO WATCH FOR PORTIONS OF WESTERN AND CENTRAL KANSAS WESTERN OKLAHOMA INCLUDING THE CENTRAL AND EASTERN PANHANDLE NORTHWEST TEXAS INCLUDING THE EASTERN PANHANDLE * EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 1225 PM UNTIL 1000 PM CDT. * PRIMARY THREATS INCLUDE... SEVERAL INTENSE TORNADOES POSSIBLE SEVERAL VERY LARGE HAIL EVENTS TO 2.5 INCHES IN DIAMETER LIKELY SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES WEST NORTHWEST OF RUSSELL KANSAS TO 45 MILES SOUTH SOUTHEAST OF CHILDRESS TEXAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND 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. && DISCUSSION...TSTM INITIATION IS UNDERWAY E OF THE DRYLINE IN RESPONSE TO THE EWD MIGRATION OF A SHORT-WAVE TROUGH INTO THE SRN PLAINS. THE PRESENCE OF VERY STEEP MIDLEVEL LAPSE RATES AND A MOIST BOUNDARY LAYER IS ALREADY RESULTING IN MLCAPE VALUES OF 2000-3000 J/KG WITH A DECREASING CAP. DESPITE SOME VEER-BACK TENDENCIES IN OBSERVED AND FORECAST WIND PROFILES...LOW-LEVEL SHEAR WILL STRENGTHEN INTO THIS EVENING SUPPORTING A RISK FOR TORNADOES /SOME POTENTIALLY SIGNIFICANT/ IN ADDITION TO VERY LARGE HAIL WITH THE MOST INTENSE SUPERCELLS THAT DEVELOP. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM MOTION VECTOR 24025. ...MEAD
via SPC Forecast Products http://www.spc.noaa.gov/products/watch/ww0239.html
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