

799 

WWUS20 KWNS 242042

SEL5

SPC WW 242042

ARZ000-OKZ000-250400-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 145

NWS Storm Prediction Center Norman OK

345 PM CDT Fri Apr 24 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Extreme northwest Arkansas

  Northeast and east central Oklahoma



* Effective this Friday afternoon and evening from 345 PM until

  1100 PM CDT.



* Primary threats include...

  Scattered large hail likely with isolated very large hail events

    to 2 inches in diameter possible

  Scattered damaging wind gusts to 70 mph likely

  A tornado or two possible



SUMMARY...Thunderstorms will continue to develop near the Kansas

border and spread east-southeastward into northeast Oklahoma this

evening, and additional storms will also form farther south across

eastern Oklahoma.  A mix of multicell clusters/line segments is

expected across northeast Oklahoma, while supercells will be

possible closer to Interstate 40.  Large hail and damaging gusts

will be the primary threats, though a tornado cannot be ruled out

across the southern part of the watch area.



The severe thunderstorm watch area is approximately along and 55

statute miles east and west of a line from 25 miles northeast of

Bartlesville OK to 45 miles southeast of Mcalester OK. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU5).



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

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

28030.



...Thompson

