THE NWS STORM PREDICTION CENTER HAS ISSUED A * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF PORTIONS OF SOUTHEAST COLORADO SOUTHWESTERN KANSAS THE OKLAHOMA PANHANDLE THE TEXAS PANHANDLE * EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 435 PM UNTIL 1100 PM MDT. * PRIMARY THREATS INCLUDE... SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE MILES EAST AND WEST OF A LINE FROM 65 MILES NORTHWEST OF GARDEN CITY KANSAS TO 10 MILES SOUTHEAST OF AMARILLO TEXAS. 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 482... DISCUSSION...THUNDERSTORMS DEVELOPING OVER THE HIGHER TERRAIN CONTINUE TO INCREASE IN COVERAGE AND SHIFT SLOWLY EASTWARD TOWARD LOWER ELEVATIONS...WITHIN A BACKGROUND ENVIRONMENT OF MARGINAL SHEAR AND MODEST INSTABILITY IN CONJUNCTION WITH WEAK LOW-LEVEL EASTERLY/UPSLOPE FLOW. SOME INCREASE IN SHEAR IS ANTICIPATED THIS EVENING AS THE EASTERLY LOW-LEVEL JET STRENGTHENS -- WHICH COULD SUPPORT UPSCALE GROWTH OF CONVECTION AND AN INCREASE IN DAMAGING WIND THREAT. UNTIL THEN...ISOLATED SEVERE STORMS CAPABLE OF PRODUCING LARGE HAIL AND LOCALLY DAMAGING GUSTS CAN BE EXPECTED. AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 26025. ...GOSS -SWC-
Posted on: Wed, 07 Aug 2013 22:34:40 +0000
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