dimanche 3 juin 2012

tornado watch 347-EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 640 PM UNTIL 200 AM CDT.

WW0347 Radar
HazardTornadoesEF2+ Tornadoes
LikelihoodModerateLow
Severe Wind65 kt+ Wind
HighModerate
Severe Hail2"+ Hail
HighModerate

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 347
   NWS STORM PREDICTION CENTER NORMAN OK
   640 PM CDT SUN JUN 3 2012
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          FAR SOUTHERN KANSAS
          WESTERN AND NORTHERN OKLAHOMA
          NORTHEASTERN TEXAS PANHANDLE
   
   EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 640 PM UNTIL
   200 AM CDT.
   
   TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND
   GUSTS TO 75 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
   AREAS.
   
   THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE
   MILES NORTH AND SOUTH OF A LINE FROM 50 MILES SOUTH OF LIBERAL
   KANSAS TO 55 MILES NORTHEAST OF CHANDLER OKLAHOMA.  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.
   
   OTHER WATCH INFORMATION...CONTINUE...WW 344...WW 345...WW 346...
   
   DISCUSSION...TSTMS EXPECTED TO INCREASE OVER THE NEXT FEW HOURS
   INVOF WEAK W-E FRONT OVER NRN OK AND PERHAPS FAR SRN KS...AND INVOF
   NW-MOVING OUTFLOW BOUNDARY/MOISTURE GRADIENT IN THE NE TX PANHANDLE.
    ACTIVITY WILL BE SUPPORTED BY STRENGTHENING SSWLY LLJ...AND
   POSSIBLY BY ASCENT ASSOCIATED WITH UPR IMPULSE DRIFTING ESE FROM SW
   KS.  DEEP WNWLY SHEAR WILL REMAIN COMPARATIVELY MODEST...AROUND 30
   KTS...BUT SUFFICIENT FOR SUSTAINED STORMS/SUPERCELLS.  COUPLED
   QUALITY OF MOISTURE...STEEP LOW TO MID LVL LAPSE RATES...AND LOW LVL
   DIRECTIONAL SHEAR ASSOCIATED WITH LLJ...POTENTIAL WILL EXIST FOR
   VERY LARGE HAIL...HIGH WIND...AND TORNADOES.  THE STORMS SHOULD
   EVOLVE INTO A COUPLE OF CLUSTERS LATER TNGT/EARLY MON...WITH
   PREDOMINANT MOTION EXPECTED TO BE SE TO POSSIBLY SSEWD.
   
   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
   600. MEAN STORM MOTION VECTOR 29025.

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