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Tornado Watch 308
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WW0308 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Moderate 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.
   SEL8
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 308
   NWS STORM PREDICTION CENTER NORMAN OK
   1250 PM CDT THU MAY 19 2011
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          WESTERN OKLAHOMA
          NORTHWESTERN TEXAS
   
   EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 1250 PM UNTIL
   800 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 55 STATUTE
   MILES EAST AND WEST OF A LINE FROM 20 MILES NORTHEAST OF ALVA
   OKLAHOMA TO 100 MILES SOUTH OF CHILDRESS TEXAS.  FOR A COMPLETE
   DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
   (WOUS64 KWNS WOU8).
   
   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...
   
   DISCUSSION...STORMS HAVE BEGUN TO DEVELOP NEAR THE DRYLINE AND
   LIKELY WILL INCREASE IN COVERAGE THROUGH THE AFTERNOON IN UNCAPPED
   AND WARMING AIR MASS.  THE ENVIRONMENT HAS BECOME STRONGLY UNSTABLE
   WITH MLCAPES NEAR 3000 J/KG AND DEEP LAYER SHEAR IS SUFFICIENT FOR
   SUPERCELLS.  THE GREATEST THREAT WILL BE LARGE HAIL...THOUGH THE
   RISK FOR TORNADOES WILL INCREASE THROUGH THE AFTERNOON AS THE LOW
   LEVEL WINDS NEAR AND EAST OF THE DRYLINE ARE EXPECTED TO BACK AND
   INCREASE IN SPEED THROUGH THE AFTERNOON.
   
   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 21020.
   
   
   ...IMY
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Page last modified: September 21, 2020
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