WW 438 SEVERE TSTM KS OK 232215Z – 240600Z
URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 438 NWS STORM PREDICTION CENTER NORMAN OK 515 PM CDT TUE JUL 23 2013 THE NWS STORM PREDICTION CENTER HAS ISSUED A * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF CENTRAL AND SOUTHEAST KANSAS NORTHERN AND EASTERN OKLAHOMA * EFFECTIVE THIS TUESDAY AFTERNOON AND WEDNESDAY MORNING FROM 515 PM UNTIL 100 AM CDT. * PRIMARY THREATS INCLUDE... SEVERAL SIGNIFICANT DAMAGING WIND GUSTS TO 75 MPH POSSIBLE SEVERAL VERY LARGE HAIL EVENTS TO 3 INCHES IN DIAMETER POSSIBLE A FEW TORNADOES POSSIBLE THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 95 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 75 MILES NORTHWEST OF MEDICINE LODGE KANSAS TO 40 MILES SOUTH OF GROVE OKLAHOMA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8). 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 435...WW 436...WW 437... DISCUSSION...SCATTERED THUNDERSTORMS ARE EXPECTED TO INTENSIFY OVER PORTIONS OF CENTRAL KS AND NORTHEAST OK EARLY THIS EVENING...AND SPREAD SOUTHEASTWARD ACROSS THE WATCH. A VERY UNSTABLE AIR MASS IS IN PLACE...ALONG WITH FAVORABLE VERTICAL SHEAR. LARGE SUPERCELL THUNDERSTORMS ARE POSSIBLE...CAPABLE OF DAMAGING WINDS AND LARGE HAIL. STORMS ARE EXPECTED TO BUILD SOUTHWARD ACROSS NORTHERN OK THROUGH THE EVENING. AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 29030. ...HART
via SPC Forecast Products http://www.spc.noaa.gov/products/watch/ww0438.html
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