

832 

WWUS20 KWNS 092053

SEL1

SPC WW 092053

OKZ000-100400-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 81

NWS Storm Prediction Center Norman OK

355 PM CDT Fri Apr 9 2021



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Central and eastern Oklahoma



* Effective this Friday afternoon and evening from 355 PM until

  1100 PM CDT.



* Primary threats include...

  Scattered damaging winds and isolated significant gusts to 75

    mph likely

  Scattered large hail and isolated very large hail events to 2.5

    inches in diameter likely

  A tornado or two possible



SUMMARY...Thunderstorm are expected to increase in coverage and

intensity through the remainder of the afternoon/evening along a

sharpening cold front.  The initial storms could be supercells with

isolated very large hail, while evolution into a line with an

increasing threat for damaging winds appears likely this evening

into early tonight.  An isolated tornado or two may occur, with the

more probable area being across south central and southeastern

Oklahoma, in the vicinity of a residual outflow boundary.



The severe thunderstorm watch area is approximately along and 85

statute miles east and west of a line from 40 miles north northwest

of Tulsa OK to 15 miles west of Durant OK. For a complete depiction

of the watch see the associated watch outline update (WOUS64 KWNS

WOU1).



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 76...WW 77...WW 78...WW

79...WW 80...



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

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

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

29025.



...Thompson

