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079 

WWUS20 KWNS 172023

SEL2

SPC WW 172023

COZ000-KSZ000-NEZ000-WYZ000-180400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 322

NWS STORM PREDICTION CENTER NORMAN OK

225 PM MDT MON JUN 17 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  EASTERN COLORADO

  FAR WESTERN KANSAS

  WESTERN NEBRASKA

  SOUTHEAST WYOMING



* EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 225 PM UNTIL

  1000 PM MDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO 2

    INCHES IN DIAMETER POSSIBLE

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80

STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES NORTH OF

TORRINGTON WYOMING TO 20 MILES SOUTH SOUTHEAST OF SPRINGFIELD

COLORADO.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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 321...



DISCUSSION...AT LEAST WIDELY SCATTERED TSTMS ARE EXPECTED TO

INCREASE THROUGH MID/LATE AFTERNOON ACROSS THE CO/SOUTHEAST WY FRONT

RANGE INTO THE ADJACENT HIGH PLAINS. VEERING WIND PROFILES AND A

RELATIVELY MOIST AIRMASS/MODERATE INSTABILITY WILL RESULT IN

SUPERCELLS/SUSTAINED MULTICELLS CAPABLE OF LARGE HAIL. AS STORMS

SPREAD EAST-SOUTHEASTWARD...THE DEVELOPMENT OF ONE OR MORE MCS/S MAY

OCCUR BY EARLY/MID EVENING...WITH MORE OF A DAMAGING WIND THREAT

POSSIBLE.



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 30025.





...GUYER

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