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Tornado Watch 452
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WW0452 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Moderate 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.
   SEL2

   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 452
   NWS STORM PREDICTION CENTER NORMAN OK
   400 PM CDT SAT JUL 25 2015

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * TORNADO WATCH FOR PORTIONS OF 
     CENTRAL AND NORTHERN SOUTH DAKOTA

   * EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 400 PM UNTIL
     1100 PM CDT.

   * PRIMARY THREATS INCLUDE...
     A COUPLE TORNADOES POSSIBLE
     SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 3
       INCHES IN DIAMETER POSSIBLE
     ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

   SUMMARY...EXPECT DISCRETE STORMS/SUPERCELLS TO CONTINUE TO DEVELOP
   ACROSS THE WATCH AREA THROUGH THE EVENING. ACTIVITY WILL BE
   SUPPORTED BY STRONG TO LOCALLY EXTREME INSTABILITY AND THE PRESENCE
   OF WEAK BACKGROUND ASCENT FOCUSED ALONG THERMAL TROUGH AND WEAK
   SURFACE LOW SITUATED ACROSS CENTRAL SD. MAGNITUDE OF INSTABILITY AND
   DEEP SHEAR WILL BE MORE THAN ADEQUATE FOR SUPERCELLS. TORNADO THREAT
   MAY EVOLVE FROM DISCRETE CELLS NEAR A NARROW AXIS OF BACKED
   LOW-LEVEL FLOW LEFT IN THE WAKE OF STORM COMPLEX EARLIER IN THE DAY.
   LOWER LFC NEAR THIS WEAK BOUNDARY WILL ALSO SUPPORT THE CHANCE FOR
   STRONGER MID TO LOW LEVEL ROTATION TO REACH THE SURFACE.

   THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE
   MILES NORTH AND SOUTH OF A LINE FROM 50 MILES NORTHWEST OF PIERRE
   SOUTH DAKOTA TO 40 MILES NORTH NORTHEAST OF HURON SOUTH DAKOTA. 
   FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU2).

   PRECAUTIONARY/PREPAREDNESS ACTIONS...

   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 451...

   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
   WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
   500. MEAN STORM MOTION VECTOR 26020.


   ...CARBIN
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Page last modified: July 26, 2015
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