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Severe Thunderstorm Watch 355
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WW0355 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.
   SEL5

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 355
   NWS Storm Prediction Center Norman OK
   930 PM CDT Thu Jul 8 2021

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Central and southeastern South Dakota

   * Effective this Thursday night and Friday morning from 930 PM
     until 300 AM CDT.

   * Primary threats include...
     Scattered large hail and isolated very large hail events to 2
       inches in diameter possible
     Isolated damaging wind gusts to 70 mph possible

   SUMMARY...Supercells in northwestern South Dakota and southwestern
   North Dakota could move into the western parts of the watch area in
   central South Dakota before those storms weaken.  Additional
   elevated thunderstorms will likely form farther southeast into
   southeastern South Dakota through the early overnight hours.  The
   strongest storms to the west will be capable of producing large hail
   and damaging winds, while the elevated storms to the east will
   primarily pose a threat for large hail.

   The severe thunderstorm watch area is approximately along and 35
   statute miles north and south of a line from 80 miles west northwest
   of Pierre SD to 25 miles south southeast of Sioux Falls SD. For a
   complete depiction of the watch see the associated watch outline
   update (WOUS64 KWNS WOU5).

   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 350...WW 353...WW 354...

   AVIATION...A few severe thunderstorms with hail surface and aloft to
   2 inches. Extreme turbulence and surface wind gusts to 60 knots. A
   few cumulonimbi with maximum tops to 550. Mean storm motion vector
   31025.

   ...Thompson
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Page last modified: July 09, 2021
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