

000 

WWUS20 KWNS 252231

SEL9

SPC WW 252231

COZ000-KSZ000-NEZ000-260400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 299

NWS STORM PREDICTION CENTER NORMAN OK

430 PM MDT FRI MAY 25 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       FAR EAST CENTRAL COLORADO

       NORTHWEST KANSAS

       FAR SOUTHWEST NEBRASKA



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 430 PM UNTIL

1000 PM MDT.



HAIL TO 2.5 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 55

STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES EAST

NORTHEAST OF IMPERIAL NEBRASKA TO 45 MILES SOUTH OF GOODLAND

KANSAS.  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 298...



DISCUSSION...ENVIRONMENT REMAINS QUITE FAVORABLE FOR INTENSE

THUNDERSTORMS THIS EVENING WITHIN SMALL AREA AROUND NWRN KS/SWRN

NEB/FAR ERN CO.  AIR MASS IS MODERATELY UNSTABLE AND SUFFICIENTLY

SHEARED FOR BRIEF SUPERCELLS AND MULTICELL CLUSTERS.  ACTIVITY

CONTINUES TO INCREASE LATE TODAY AND HIGH-RES GUIDANCE SUGGESTS

FURTHER INTENSIFICATION WILL OCCUR.  LARGE HAIL AND ISOLATED WIND

DAMAGE ARE EXPECTED TO ACCOMPANY THE MORE INTENSE CORES AS STORMS

SHIFT SLOWLY ESEWD THIS EVENING.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 25020.





...EVANS

