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Tornado Watch 397
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WW0397 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Moderate Low
Severe Wind 65 kt+ Wind
Moderate Moderate
Severe Hail 2"+ Hail
Moderate Moderate

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL7
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 397
   NWS STORM PREDICTION CENTER NORMAN OK
   155 PM MDT SAT JUN 13 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          A LARGE PORTION OF EASTERN COLORADO
          MUCH OF NEBRASKA PANHANDLE
          PARTS OF EASTERN WYOMING
   
   EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 155 PM UNTIL
   900 PM MDT.
   
   TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
   GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
   AREAS.
   
   THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE
   MILES EAST AND WEST OF A LINE FROM 50 MILES NORTH OF DOUGLAS
   WYOMING TO 50 MILES SOUTH OF LIMON COLORADO.  FOR A COMPLETE
   DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
   (WOUS64 KWNS WOU7).
   
   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.
   
   DISCUSSION...WITH APPROACH OF S/WV TROUGH FROM UT/WRN CO...SHEAR
   PROFILES AND INSTABILITY ARE BECOMING FAVORABLE FOR DEVELOPMENT OF
   SEVERE THUNDERSTORMS...PRIMARILY EAST OF MOUNTAINS.  WITH MLCAPES
   AOA 1200 J/KG AND 40KT OF SHEAR...SUPERCELLS ARE ILKLEY WITH
   POTENTIAL FOR LARGE HAIL AND TORNADOES.  ACTIVITY WILL GRADUALLY
   DEVELOP EWD ACROSS THE WATCH INTO THE MORE FAVORABLE LOW LEVEL
   SHEAR/INSTABILITY ENVIRONMENT.
   
   AVIATION...TORNADOES AND 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 24025.
   
   
   ...HALES
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Page last modified: June 14, 2009
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