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Tornado Watch 320
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WW0320 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Moderate Low
Severe Wind 65 kt+ Wind
Moderate Moderate
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.

   Tornado Watch Number 320
   NWS Storm Prediction Center Norman OK
   535 PM MDT Mon Jun 12 2017

   The NWS Storm Prediction Center has issued a

   * Tornado Watch for portions of 
     Northwestern Nebraska
     Western and southern South Dakota
     Northeastern Wyoming

   * Effective this Monday afternoon and Tuesday morning from 535 PM
     until 200 AM MDT.

   * Primary threats include...
     A few tornadoes possible
     Scattered damaging winds and isolated significant gusts to 80
       mph possible
     Scattered large hail and isolated very large hail events to 4
       inches in diameter possible

   SUMMARY...Supercells should move into the watch area from the
   southwest, offering a threat for tornadoes and large to giant hail. 
   Activity should evolve into one or two complexes of storms with an
   increasing risk of severe wind later this evening into tonight,
   across the Badlands/Black Hills region and points northeast from

   The tornado watch area is approximately along and 100 statute miles
   east and west of a line from 90 miles northwest of Rapid City SD to
   55 miles southwest of Valentine NE. For a complete depiction of the
   watch see the associated watch outline update (WOUS64 KWNS WOU0).


   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.


   318...WW 319...

   AVIATION...Tornadoes and a few severe thunderstorms with hail
   surface and aloft to 4 inches. Extreme turbulence and surface wind
   gusts to 70 knots. A few cumulonimbi with maximum tops to 550. Mean
   storm motion vector 22035.

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Page last modified: June 13, 2017
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