URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 519
NWS STORM PREDICTION CENTER NORMAN OK
240 PM MDT FRI JUN 26 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
NORTHEAST COLORADO
NORTHWEST KANSAS
WESTERN NEBRASKA
SOUTHEAST WYOMING
EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 240 PM UNTIL 900
PM MDT.
HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
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 35 MILES EAST
NORTHEAST OF CHADRON NEBRASKA TO 20 MILES SOUTH SOUTHWEST OF
LIMON COLORADO. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).
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 515...WW 516...WW
517...WW 518...
DISCUSSION...THUNDERSTORMS ARE INCREASING ALONG THE FOOTHILLS OF
CENTRAL CO...AND WILL SPREAD EASTWARD THROUGH THE EVENING WITH A
RISK OF LOCALLY DAMAGING WINDS. OTHER ISOLATED CELLS ARE DEVELOPING
ALONG WEAK SURFACE BOUNDARIES OVER THE NEB PANHANDLE AND EXTREME
NORTHEAST CO. THESE STORMS WILL TRACK EASTWARD INTO A VERY MOIST
AND UNSTABLE AIRMASS WITH A RISK OF LARGE HAIL AND DAMAGING WINDS.
EVENTUALLY...PARTS OF CENTRAL NEB WATCH MAY NEED TO BE UPGRADED TO A
TORNADO WATCH THIS EVENING.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 25025.
...HART
