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000 

WWUS20 KWNS 222022

SEL4

SPC WW 222022

COZ000-KSZ000-230400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 444

NWS STORM PREDICTION CENTER NORMAN OK

225 PM MDT FRI JUN 22 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EASTERN COLORADO

       FAR WESTERN KANSAS



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 225 PM UNTIL

1000 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 80

STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES NORTH OF

AKRON COLORADO TO 20 MILES SOUTH SOUTHEAST OF SPRINGFIELD

COLORADO.  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 442...WW 443...



DISCUSSION...SLOW MOVING CLUSTERS OF STORMS WILL PERSIST ACROSS WW

THIS EVENING...ENHANCED BY WEAK MID LEVEL IMPULSE NOW MOVING SEWD

ACROSS NRN CO.  AIR MASS IS MODERATELY UNSTABLE OVER THE HIGH PLAINS

AND SUFFICIENT PARAMETERS REMAIN IN PLACE FOR LARGE HAIL AND

DAMAGING WINDS WITH THE STRONGER CORES.  ACTIVITY MAY EVOLVE INTO A

SLOW MOVING MCS INTO E-CENTRAL/SERN CO THROUGH THE EVENING.



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 34015.





...EVANS

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