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Severe Thunderstorm Watch 434
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WW0434 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Very Low Very 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.
   SEL4

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 434
   NWS Storm Prediction Center Norman OK
   1250 AM CDT Fri Aug 14 2020

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Southern North Dakota
     Extreme north central South Dakota

   * Effective this Friday morning from 1250 AM until 800 AM CDT.

   * Primary threats include...
     Scattered large hail and isolated very large hail events to 2
       inches in diameter likely
     Scattered damaging winds likely with isolated significant gusts
       to 75 mph possible

   SUMMARY...A cluster of severe storms, including bowing segments and
   some embedded supercell structures, will persist overnight while
   moving eastward over southern North Dakota and adjacent northern
   South Dakota.  The storms will be capable of producing damaging
   winds and large hail through the early morning hours.

   The severe thunderstorm watch area is approximately along and 40
   statute miles north and south of a line from 35 miles south of
   Dickinson ND to 40 miles south southeast of Jamestown ND. For a
   complete depiction of the watch see the associated watch outline
   update (WOUS64 KWNS WOU4).

   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.

   &&

   OTHER WATCH INFORMATION...CONTINUE...WW 433...

   AVIATION...A few severe thunderstorms with hail surface and aloft to
   2 inches. Extreme turbulence and surface wind gusts to 65 knots. A
   few cumulonimbi with maximum tops to 550. Mean storm motion vector
   27040.

   ...Thompson
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