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URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 642
NWS Storm Prediction Center Norman OK
400 PM CDT Wed Aug 21 2024

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Southeast Montana
  Western South Dakota

* Effective this Wednesday afternoon and evening from 400 PM
  until 1100 PM CDT.

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

SUMMARY...Thunderstorms will develop across southeast Montana and
western South Dakota through the afternoon and evening.  The
strongest cells may produce damaging winds and large hail.

The severe thunderstorm watch area is approximately along and 55
statute miles north and south of a line from 145 miles west
northwest of Broadus MT to 25 miles north northeast of Philip SD.
For a co*plete depiction of the watch see the associated watch
outline update (WOUS64 KWNS WOU2).

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.

&&

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 500. Mean storm motion vector
25030.

...Hart