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WWUS20 KWNS 212348

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URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 130

NWS Storm Prediction Center Norman OK

650 PM CDT Tue Apr 21 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Western and central Oklahoma



* Effective this Tuesday night and Wednesday morning from 650 PM

  until 200 AM CDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 3.5

    inches in diameter likely

  Isolated damaging wind gusts to 70 mph possible



SUMMARY...A couple supercells, one of which may be long-lived,

should gradually evolve east-southeast across western and central

Oklahoma tonight. Large hail, some of which should be significant,

is the primary threat.



The severe thunderstorm watch area is approximately along and 60

statute miles north and south of a line from 45 miles west northwest

of Clinton OK to 40 miles east northeast of Ardmore OK. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU0).



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 129...



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

3.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A

few cumulonimbi with maximum tops to 550. Mean storm motion vector

29025.



...Grams

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