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WWUS20 KWNS 040543

SEL9

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OKZ000-041000-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 139

NWS Storm Prediction Center Norman OK

1245 AM CDT Tue May 4 2021



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Southern Oklahoma



* Effective this Tuesday morning from 1245 AM until 500 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...Scattered severe thunderstorms will continue eastward

overnight across southern Oklahoma, with large hail and damaging

winds a possibility mainly across south-central toward southeast

Oklahoma.



The severe thunderstorm watch area is approximately along and 30

statute miles north and south of a line from 30 miles west of

Ardmore OK to 40 miles east northeast of Durant OK. 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 137...WW 138...



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 450. Mean storm motion vector

27025.



...Guyer

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