

000 

WWUS20 KWNS 300245

SEL0

SPC WW 300245

COZ000-KSZ000-300800-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 390

NWS STORM PREDICTION CENTER NORMAN OK

945 PM CDT THU MAY 29 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EXTREME SOUTHEAST COLORADO

       WESTERN KANSAS



EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 945 PM

UNTIL 300 AM 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 40

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 90 MILES WEST

SOUTHWEST OF GARDEN CITY KANSAS TO 30 MILES SOUTH OF HILL CITY

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.



OTHER WATCH INFORMATION...CONTINUE...WW 386...WW 387...WW

388...WW 389...



DISCUSSION...SCATTERED STORMS WILL CONTINUE TO FORM AND TRAIN ALONG

A STALLED BOUNDARY IN WRN KS.  STEEP LAPSE RATES AND SUBSTANTIAL

DEEP LAYER VERTICAL SHEAR WILL MAINTAIN A THREAT FOR LARGE HAIL AND

DAMAGING GUSTS WITH THE STRONGER STORMS.



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

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

MOTION VECTOR 26035.





...THOMPSON

