SEL5 URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 395 NWS STORM PREDICTION CENTER NORMAN OK 135 PM MDT FRI JUN 15 2012 THE NWS STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF NORTHEAST COLORADO NEBRASKA PANHANDLE WESTERN SOUTH DAKOTA EASTERN WYOMING EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 135 PM UNTIL 900 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 APPROXIMATELY ALONG AND 60 STATUTE MILES EAST AND WEST OF A LINE FROM 90 MILES NORTH OF RAPID CITY SOUTH DAKOTA TO 45 MILES EAST SOUTHEAST OF COLORADO SPRINGS COLORADO. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5). 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 THUNDERSTORMS ARE FORMING OVER THE HIGHER TERRAIN OF CENTRAL CO INTO SOUTHERN WY. OTHER STORMS ARE EXPECTED TO DEVELOP SOON OVER WESTERN SD. SUFFICIENT VERTICAL SHEAR IS PRESENT ACROSS THIS REGION FOR SOME CONVECTIVE ORGANIZATION AND A RISK OF LOCALLY DAMAGING WINDS AND HAIL IN THE STRONGER STORMS. EFFECTIVE SHEAR VALUES OVER SD ARE MORE SIGNIFICANT...AND WILL POSE A GREATER RISK OF SUPERCELLS AND MORE WIDESPREAD HAIL/WIND. 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 27025.
Sorry for the delay on getting this severe thunderstorm watch out.
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