SPC Severe Thunderstorm Watch 249



WW 249 SEVERE TSTM SD 090100Z – 090600Z

WW 0249 Image


URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 249
NWS Storm Prediction Center Norman OK
700 PM MDT Tue Jun 8 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Western South Dakota

* Effective this Tuesday night from 700 PM until Midnight MDT.

* Primary threats include...
  Scattered damaging wind gusts to 70 mph possible
  Scattered large hail events to 1.5 inches in diameter possible

SUMMARY...High-based thunderstorms now forming in Wyoming will
spread into western South Dakota with some intensification possible
this evening.  The stronger storms in a broken band may produce
occasional damaging gusts and large hail.

The severe thunderstorm watch area is approximately along and 50
statute miles east and west of a line from 35 miles northeast of
Buffalo SD to 35 miles south of Rapid City SD. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU9).

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 247...WW 248...

AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
24020.

...Thompson

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