

000 

WWUS20 KWNS 030727

SEL9

SPC WW 030727

COZ000-KSZ000-031500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 429

NWS STORM PREDICTION CENTER NORMAN OK

130 AM MDT TUE JUN 3 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EASTERN COLORADO

       FAR WESTERN KANSAS



EFFECTIVE THIS TUESDAY MORNING FROM 130 AM UNTIL 900 AM MDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 60

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60

STATUTE MILES EITHER SIDE OF A LINE FROM 50 MILES SOUTH SOUTHEAST

OF BURLINGTON COLORADO TO 35 MILES SOUTHWEST OF AKRON 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 427...WW 428...



DISCUSSION...SUPERCELLS NOW NEAR LIC EXPECTED TO CONTINUE ESE THIS

MORNING...FED BY INCREASINGLY MOIST ENELY INFLOW WITH ERN EXTENT.

STRONG LOW-LEVEL VEERING MAY CONTINUE TO FOSTER LOW-LEVEL STORM

ROTATION AND THE POTENTIAL FOR AN ISOLD TORNADO...BUT ESTIMATED

DEGREE OF INSTABILITY AND RATHER MODERATE UNIDIRECTIONAL MID-LVL

FLOW SUGGEST PRIMARY THREAT SHOULD BE LARGE HAIL.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 50

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM

MOTION VECTOR 30025.





...CORFIDI

