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WWUS20 KWNS 042024

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MTZ000-SDZ000-WYZ000-050400-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 252

NWS Storm Prediction Center Norman OK

225 PM MDT Thu Jun 4 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Far southeast Montana

  Western and central South Dakota

  Far northeast Wyoming



* Effective this Thursday afternoon and evening from 225 PM until

  1000 PM MDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 3

    inches in diameter likely

  Scattered damaging winds and isolated significant gusts to 75

    mph possible

  A tornado or two possible



SUMMARY...Multiple supercells should develop near the South Dakota,

Montana, Wyoming border area and spread east-southeast into central

South Dakota this evening. A couple of these supercells may be

long-tracked with potential for elongated swaths of large hail. A

tornado or two is also possible, mainly across western into

south-central South Dakota.



The severe thunderstorm watch area is approximately along and 65

statute miles north and south of a line from 90 miles west of

Buffalo SD to 50 miles south southeast of Pierre SD. For a complete

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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 249...WW 250...WW 251...



AVIATION...A few severe thunderstorms with hail surface and aloft to

3 inches. Extreme turbulence and surface wind gusts to 65 knots. A

few cumulonimbi with maximum tops to 500. Mean storm motion vector

29040.



...Grams

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