URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 544 NWS STORM PREDICTION CENTER NORMAN OK 430 PM MDT FRI JUL 3 2009 THE NWS STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF NORTHEAST MONTANA EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 430 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 APPROXIMATELY ALONG AND 60 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 85 MILES WEST SOUTHWEST OF GLASGOW MONTANA TO 55 MILES NORTH OF SIDNEY MONTANA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4). 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 540...WW 541...WW 542...WW 543... DISCUSSION...SEVERE STORMS IN SRN SASK WILL CONTINUE DROPPING SEWD INTO NERN MT ALONG WEAK SURFACE COLD FRONT THIS EVENING WITH RISK OF LARGE HAIL AND ISOLATED DAMAGING WINDS. ISOLATED STRONG TO SEVERE STORMS ARE ALSO POSSIBLE WITH DEVELOPMENT ALONG RESIDUAL SURFACE
URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 543 NWS STORM PREDICTION CENTER NORMAN OK 500 PM CDT FRI JUL 3 2009 THE NWS STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF NORTHEAST KANSAS EFFECTIVE THIS FRIDAY AFTERNOON FROM 500 PM UNTIL MIDNIGHT CDT. 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 35 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 20 MILES WEST NORTHWEST OF CONCORDIA KANSAS TO 25 MILES NORTH OF TOPEKA KANSAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3). 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. OTHER WATCH INFORMATION...CONTINUE...WW 540...WW 541... DISCUSSION...SHEAR REMAINS QUITE STRONG ACROSS NERN KS...AND LOW LEVEL SHEAR WILL STRENGTHEN FURTHER THROUGH THE EVENING ALONG SSWLY LLJ. GIVEN DEGREE OF INSTABILITY...POTENTIAL FOR A FEW DISCRETE STORMS TO ROOT INTO BOUNDARY LAYER SUPPORTS A RISK OF TORNADOES THIS EVENING. LARGE HAIL AND ISOLATED DAMAGING WINDS ARE ADDITIONAL RISKS.
URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 542...RESENT NWS STORM PREDICTION CENTER NORMAN OK 455 PM CDT FRI JUL 3 2009 THE NWS STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF NORTHERN KANSAS CENTRAL AND SOUTHEAST NEBRASKA EFFECTIVE THIS FRIDAY AFTERNOON FROM 455 PM UNTIL MIDNIGHT CDT. 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 70 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES NORTH OF IMPERIAL NEBRASKA TO 5 MILES EAST NORTHEAST OF FALLS CITY NEBRASKA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2). 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 540...WW 541... DISCUSSION...SLY LLJ WILL INCREASE ACROSS NERN KS THIS EVENING AHEAD OF SHORTWAVE TROUGH SHIFTING ACROSS THE CENTRAL HIGH PLAINS. STORMS WILL BE CAPABLE OF LARGE HAIL AND ISOLATED DAMAGING WINDS...WITH OVERALL EVOLUTION INTO ONE OR MORE STRONG TO SEVERE MCSS ALONG NOSE OF LLJ BY THE LATE EVENING.
URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 541 NWS STORM PREDICTION CENTER NORMAN OK 250 PM MDT FRI JUL 3 2009 THE NWS STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF NORTHEAST COLORADO WESTERN NEBRASKA EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 250 PM UNTIL 900 PM MDT. HAIL TO 1.5 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 65 STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES NORTH NORTHWEST OF MULLEN NEBRASKA TO 30 MILES WEST OF AKRON COLORADO. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1). 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 540... DISCUSSION...STORMS WILL CONTINUE TO INCREASE FROM SERN WY ACROSS NERN CO AND INTO THE NEB PANHANDLE THROUGH THE EVENING HOURS. THIS ACTIVITY WAS DEVELOPING WITHIN A MODESTLY UNSTABLE AIRMASS WHERE EFFECTIVE DEEP-LAYER SHEAR AROUND 40KT WILL SUPPORT SUPERCELLS. LIFT
URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 540 NWS STORM PREDICTION CENTER NORMAN OK 300 PM CDT FRI JUL 3 2009 THE NWS STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF EASTERN COLORADO NORTHWEST KANSAS EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 300 PM UNTIL 1000 PM CDT. HAIL TO 1.5 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 NORTH AND SOUTH OF A LINE FROM 50 MILES WEST OF BURLINGTON COLORADO TO 55 MILES EAST NORTHEAST OF RUSSELL KANSAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0). 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...THROUGH LATE AFTERNOON...THUNDERSTORMS ARE EXPECTED TO DEVELOP AND INCREASE NEAR LEE/THERMAL LOW AND ASSOCIATED WARM FRONT SITUATED FROM ERN CO INTO NWRN KS. AIR MASS ACROSS THESE AREAS HAS BECOME VERY HOT AND MODERATELY UNSTABLE WITH MLCAPE OF 1200-2000 J PER KG AND DEEPLY MIXED BOUNDARY LAYER. LARGE SURFACE DEWPOINT DEPRESSIONS SHOULD SUPPORT STRONG TO DAMAGING DOWNBURST WINDS AND
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