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925 

WWUS20 KWNS 222220

SEL6

SPC WW 222220

COZ000-KSZ000-NEZ000-230500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 346

NWS STORM PREDICTION CENTER NORMAN OK

420 PM MDT SAT JUN 22 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  NORTHEAST COLORADO

  NORTHWEST KANSAS

  FAR SOUTHWEST NEBRASKA



* EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 420 PM UNTIL

  1100 PM MDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL TORNADOES POSSIBLE

  SEVERAL DAMAGING WIND GUSTS WITH A FEW SIGNIFICANT GUSTS TO 75

    MPH POSSIBLE

  SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO 3

    INCHES IN DIAMETER POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE

MILES EAST AND WEST OF A LINE FROM 55 MILES NORTH OF AKRON

COLORADO TO 35 MILES SOUTHWEST OF BURLINGTON COLORADO.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU6).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 343...WW 344...WW 345...



DISCUSSION...TSTMS EXPECTED TO INCREASE THROUGH MID-EVE IN ZONE OF

UPSLOPE FLOW N OF WEAK W-E FRONT. ASCENT WILL BE ENHANCED BY UPR-LVL

DIFFLUENCE ON SERN FRINGE OF PROGRESSIVE...NRN RCKYS SHORTWAVE

TROUGH. STEEP LOW TO MID-LVL LAPSE RATES AND 30-40 KT WSWLY DEEP

SHEAR WITH A SIZABLE LOW-LVL DIRECTIONAL COMPONENT MAY SUPPORT A FEW

SUSTAINED STORMS/SUPERCELL CLUSTERS CAPABLE OF LARGE HAIL...DMGG

WIND...AND A COUPLE TORNADOES.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 25025.





...CORFIDI

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