SEL1 URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 361 NWS STORM PREDICTION CENTER NORMAN OK 300 PM MDT WED JUN 6 2012 THE NWS STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF NORTHEAST COLORADO THE NEBRASKA PANHANDLE SOUTHEAST WYOMING EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 300 PM UNTIL 900 PM MDT. TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE MILES EAST AND WEST OF A LINE FROM 20 MILES NORTHWEST OF CHADRON NEBRASKA TO 45 MILES WEST SOUTHWEST OF LIMON COLORADO. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1). 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...STORMS ARE BEGINNING TO DEVELOP ALONG THE WRN EDGE OF DEEPER MOISTURE OVER THE SERN WY/NEB PANHANDLE BORDER REGION...AND ALONG A CONVERGENCE LINE OVER NERN CO. BOTH BOUNDARIES ARE MOVING NWWD ACCORDING TO SATELLITE/RADAR DATA...SUGGESTING STORM THREAT MAY GRADUALLY DEVELOP WWD WHERE STRONGER SSWLY WINDS ALOFT ARE LOCATED. STEEP LAPSE RATES AND STRONG HEATING WILL PROMOTE FORMATION OF LARGE HAIL WITH MORE INTENSE CELLS...WITH STRONG WIND GUSTS ALSO POSSIBLE. THERE IS ALSO POTENTIAL FOR SEVERAL TORNADOES TO DEVELOP...ESPECIALLY LONG THE DENVER CONVERGENCE ZONE IN NERN CO. AVIATION...TORNADOES AND 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 450. MEAN STORM MOTION VECTOR 20020.
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