THE NWS STORM PREDICTION CENTER HAS ISSUED A * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF SOUTHEAST COLORADO WESTERN KANSAS NORTHEAST NEW MEXICO OKLAHOMA PANHANDLE WESTERN AND CENTRAL TEXAS PANHANDLE * EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 200 PM UNTIL 1100 PM CDT. * 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 95 STATUTE MILES EAST AND WEST OF A LINE FROM 95 MILES NORTH NORTHWEST OF GARDEN CITY KANSAS TO 25 MILES SOUTH OF TUCUMCARI NEW MEXICO. 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. && DISCUSSION...TSTMS ARE DEVELOPING ALONG SEVERAL MESOSCALE BOUNDARIES THIS AFTERNOON AMIDST A MOIST AND MODERATE TO STRONGLY UNSTABLE AIR MASS WITH MLCAPE VALUES OF 2000-3000+ J/KG. THIS INSTABILITY COINCIDES WITH A KINEMATIC ENVIRONMENT FEATURING MODEST /30-35 KT/ DEEP NWLY SHEAR WHICH WILL SUPPORT MULTICELLS AND SOME SUPERCELL STRUCTURES CAPABLE OF LARGE HAIL AND DAMAGING WINDS. STORMS WILL LIKELY COALESCE INTO SWD OR SWWD-MOVING CLUSTERS BY EVENING WITH A CONTINUED RISK FOR DAMAGING WINDS AND HAIL. 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 550. MEAN STORM MOTION VECTOR 36020. ...MEAD -SWC-
Posted on: Wed, 31 Jul 2013 19:02:44 +0000
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