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669 

WWUS20 KWNS 091813

SEL7

SPC WW 091813

ARZ000-LAZ000-MSZ000-TXZ000-100200-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 157

NWS Storm Prediction Center Norman OK

115 PM CDT Sun May 9 2021



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Much of central and southern Arkansas

  Northern Louisiana

  West central Mississippi

  Northeast Texas



* Effective this Sunday afternoon and evening from 115 PM until

  900 PM CDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 2.5

    inches in diameter likely

  Scattered damaging wind gusts to 70 mph likely

  A tornado or two possible



SUMMARY...Scattered severe thunderstorms are expected to form this

afternoon along and ahead of a cold front central Arkansas

southwestward into northeast Texas, as well as from northern

Louisiana into west central Mississippi.  The storm environment will

favor a mix of supercells and organized clusters capable of

producing isolated very large hail and damaging winds through this

evening.  A tornado or two cannot be ruled out with the more

intense/persistent supercells.



The severe thunderstorm watch area is approximately along and 80

statute miles north and south of a line from 40 miles west southwest

of Longview TX to 55 miles east northeast of Pine Bluff AR. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU7).



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

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

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

28025.



...Thompson

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