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Severe Thunderstorm Watch 206
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WW0206 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Low
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.
   SEL6

   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 206
   NWS STORM PREDICTION CENTER NORMAN OK
   935 AM CDT TUE JUN 3 2014

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     NORTHERN NEBRASKA
     CENTRAL AND SOUTHERN SOUTH DAKOTA

   * EFFECTIVE THIS TUESDAY MORNING AND AFTERNOON FROM 935 AM UNTIL
     500 PM CDT.

   * PRIMARY THREATS INCLUDE...
     SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS
       TO 2.5 INCHES IN DIAMETER POSSIBLE
     ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
     A TORNADO OR TWO POSSIBLE

   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 70 MILES WEST
   SOUTHWEST OF PHILIP SOUTH DAKOTA TO 45 MILES NORTH NORTHEAST OF
   ONEILL NEBRASKA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).

   PRECAUTIONARY/PREPAREDNESS ACTIONS...

   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...STRONG TO SEVERE STORM DEVELOPMENT IS NOW WELL UNDERWAY
   IN RESPONSE TO FORCING ASSOCIATED WITH LOWER/MID TROPOSPHERIC WARM
   ADVECTION NEAR THE CREST OF PLAINS MID-LEVEL RIDGING.  A FURTHER
   INCREASE IN CONVECTIVE DEVELOPMENT...CONSOLIDATION AND INCREASING
   ORGANIZATION APPEARS LIKELY THROUGH MID AFTERNOON AS ACTIVITY
   DEVELOPS EASTWARD TOWARD THE MID MISSOURI VALLEY.  ALTHOUGH
   CONVECTION IS GENERALLY BASED ABOVE A STABLE BOUNDARY LAYER...THE
   INITIAL SEVERE HAIL THREAT MAY TRANSITION TO BOTH A SEVERE WIND AND
   HAIL THREAT.  THE RISK FOR TORNADOES MAY ALSO BEGIN TO INCREASE
   ACROSS SOUTHERN/SOUTHEASTERN PORTIONS OF THE WATCH AREA TOWARD
   20-22Z...IN THE PRESENCE OF INCREASING BOUNDARY LAYER INSTABILITY.

   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
   MOTION VECTOR 27030.


   ...KERR
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Page last modified: June 03, 2014
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