Skip Navigation Links weather.gov 
NOAA logo-Select to go to the NOAA homepage NOAA's National Weather Service   Select to go to the NWS homepage
Storm Prediction Center
navigation bar left  
  navigation bar end cap


 
USA.gov is the U.S. Government's official Web portal to all Federal, state and local government Web resources and services.

Severe Thunderstorm Watch 540
< Previous WW          Next WW >
  | | | | | |  
WW0540 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Moderate
Severe Hail 2"+ Hail
Moderate Low

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL0
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 540
   NWS STORM PREDICTION CENTER NORMAN OK
   300 PM CDT FRI JUL 3 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          EASTERN COLORADO
          NORTHWEST KANSAS
   
   EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 300 PM UNTIL
   1000 PM CDT.
   
   HAIL TO 1.5 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 60
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES WEST OF
   BURLINGTON COLORADO TO 55 MILES EAST NORTHEAST OF RUSSELL KANSAS.
    FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU0).
   
   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.
   
   DISCUSSION...THROUGH LATE AFTERNOON...THUNDERSTORMS ARE EXPECTED TO
   DEVELOP AND INCREASE NEAR LEE/THERMAL LOW AND ASSOCIATED WARM FRONT
   SITUATED FROM ERN CO INTO NWRN KS. AIR MASS ACROSS THESE AREAS HAS
   BECOME VERY HOT AND MODERATELY UNSTABLE WITH MLCAPE OF 1200-2000 J
   PER KG AND DEEPLY MIXED BOUNDARY LAYER. LARGE SURFACE DEWPOINT
   DEPRESSIONS SHOULD SUPPORT STRONG TO DAMAGING DOWNBURST WINDS AND
   OUTFLOW DOMINANT STORMS. SOME ORGANIZATION POTENTIAL TO STORM
   UPDRAFTS MAY EVOLVE WITH TIME AS STRONGER MID-LEVEL FLOW AND WEAK
   SHORT WAVE DISTURBANCE DEVELOP EWD FROM CO/ROCKIES. THUS...EXPECT
   INITIALLY ISOLATED STORMS TO INCREASE IN COVERAGE AND ORGANIZATION
   WITH GREATER CHANCE FOR WIND AND SEVERE HAIL INTO THE EVENING HOURS.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
   MOTION VECTOR 27015.
   
   
   ...CARBIN
Top of Page/Status Messages for this watch/All Current Watches/Forecast Products/Home
Weather Topics:
Watches, Mesoscale Discussions, Outlooks, Fire Weather, All Products, Contact Us
NOAA / National Weather Service
National Centers for Environmental Prediction
Storm Prediction Center
120 David L. Boren Blvd.
Norman, OK 73072 U.S.A.
spc.feedback@noaa.gov
Page last modified: July 03, 2009		 Disclaimer
Information Quality
Credits
Glossary 		Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities