

000 

WWUS20 KWNS 232251

SEL1

SPC WW 232251

COZ000-KSZ000-NEZ000-SDZ000-240600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 601

NWS STORM PREDICTION CENTER NORMAN OK

455 PM MDT MON JUN 23 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHEAST COLORADO

       NORTHWEST KANSAS

       WESTERN NEBRASKA

       SOUTHWEST SOUTH DAKOTA



EFFECTIVE THIS MONDAY AFTERNOON FROM 455 PM UNTIL MIDNIGHT 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 70

STATUTE MILES EAST AND WEST OF A LINE FROM 80 MILES NORTH

NORTHEAST OF CHADRON NEBRASKA TO 55 MILES SOUTHEAST OF GOODLAND

KANSAS.  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 599...WW 600...



DISCUSSION...SCATTERED THUNDERSTORMS ARE INCREASING FROM THE BLACK

HILLS SOUTHWARD ACROSS THE HIGH PLAINS INTO EASTERN CO.  THESE

STORMS WILL DRIFT SLOWLY EASTWARD INTO AN INCREASINGLY MOIST AND

UNSTABLE AIRMASS.  MULTICELL AND A FEW SUPERCELL STORMS ARE EXPECTED

WITH A RISK OF LARGE HAIL AND DAMAGING WINDS.



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.





...HART

