

000 

WWUS20 KWNS 142057

SEL2

SPC WW 142057

COZ000-150400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 272

NWS STORM PREDICTION CENTER NORMAN OK

255 PM MDT MON MAY 14 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EASTERN COLORADO



EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 255 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 65 MILES NORTH

NORTHWEST OF AKRON COLORADO TO 25 MILES SOUTH SOUTHEAST OF LA

JUNTA COLORADO.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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 271...



DISCUSSION...STRONG TO SEVERE THUNDERSTORM ARE INCREASING ALONG THE

FRONT RANGE AND SHOULD BOTH MOVE EWD AND DEVELOP OVER THE ERN CO

PLAINS THROUGH THE EVENING.  CAPPING IS EXPECTED TO WEAKEN ACROSS WW

LATE THIS AFTERNOON...WHERE MODERATE INSTABILITY IS IN PLACE.  SHEAR

WILL BE MODEST BUT STILL SUFFICIENT FOR SUPERCELLS...THOUGH OVERALL

MODE SHOULD BECOME MULTICELLULAR.  LARGE HAIL AND ISOLATED DAMAGING

WINDS WILL BE PRIMARY THREATS.



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 27020.





...EVANS

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