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Tornado Watch 309
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WW0309 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood High Moderate
Severe Wind 65 kt+ Wind
Moderate Moderate
Severe Hail 2"+ Hail
High High

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL9
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 309
   NWS STORM PREDICTION CENTER NORMAN OK
   145 PM CDT THU MAY 19 2011
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          MUCH OF KANSAS
   
   EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 145 PM UNTIL
   900 PM CDT.
   
   TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND
   GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
   AREAS.
   
   THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE
   MILES EAST AND WEST OF A LINE FROM 65 MILES NORTHEAST OF HILL
   CITY KANSAS TO 25 MILES SOUTHEAST OF MEDICINE LODGE KANSAS.  FOR
   A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU9).
   
   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 307...WW 308...
   
   DISCUSSION...AIR MASS HAS WARMED SUFFICIENTLY SOUTH OF WARM
   FRONT...NEAR A ICT-RSL LINE...AND EAST OF A DRYLINE IN WRN KS FOR
   STORMS TO INITIATE. THE STORMS WILL DEVELOP/SPREAD NWD THROUGH THE
   AFTERNOON HOURS DUE TO THE STRONG SLY FLOW ALOFT. THE DEEP LAYER
   SHEAR AND STRONG INSTABILITY ARE FAVORABLE FOR INTENSE SUPERCELLS...
   WITH THE LARGER HAIL NEAR OR BIGGER THAN BASEBALL SIZE. ALSO...THE
   MOIST BOUNDARY LAYER AND STRONG LOW LEVEL SHEAR WILL SUPPORT
   TORNADOES...ONE OR TWO WHICH COULD BE STRONG. THE TORNADOES ARE MOST
   LIKELY NEAR AND NORTH OF THE WARM FRONT WHERE ELY BOUNDARY LAYER
   WINDS WILL RESULT IN ENHANCED SHEAR.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
   WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
   550. MEAN STORM MOTION VECTOR 21030.
   
   
   ...IMY
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Page last modified: September 21, 2020
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