URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 354 STORM PREDICTION CENTER NORMAN OK 544 PM MDT SAT JUN 2 2001 THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF SOUTHEAST COLORADO SOUTHWEST KANSAS EXTREME NORTHEAST NEW MEXICO THE WESTERN OKLAHOMA PANHANDLE THE NORTHERN TEXAS PANHANDLE EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 600 PM UNTIL 1100 PM MDT. HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 75 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES SOUTH SOUTHWEST OF LA JUNTA COLORADO TO 40 MILES EAST NORTHEAST OF ELKHART KANSAS. 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...SCATTERED STRONG/SEVERE STORMS ARE EXPECTED TO CONTINUE TO INCREASE IN VICINITY OF THE RATON RIDGE FOR NEXT FEW HOURS. INCREASING LOW LEVEL MOISTURE...STEEP LAPSE RATES...AND SUFFICIENT LOW LEVEL/DEEP LAYER SHEAR PROFILES WILL SUPPORT SUPERCELL THUNDERSTORMS CAPABLE OF LARGE HAIL AND DAMAGING WINDS. 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 28020. ...HART