WWUS20 KWNS 080423 SEL3 SPC WW 080423 OKZ000-081100- URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 173 NWS Storm Prediction Center Norman OK 1125 PM CDT Thu May 7 2020 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Southern and eastern Oklahoma * Effective this Thursday night and Friday morning from 1125 PM until 600 AM CDT. * Primary threats include... Widespread damaging winds and isolated significant gusts to 80 mph likely Scattered large hail and isolated very large hail events to 2 inches in diameter possible A tornado or two possible SUMMARY...An arcing thunderstorm cluster across west-central Oklahoma will likely develop into a forward-propagating MCS with potential for widespread damaging winds as it accelerates across parts of southern and eastern Oklahoma overnight. The severe thunderstorm watch area is approximately along and 55 statute miles north and south of a line from 30 miles west of Clinton OK to 50 miles east southeast of Mcalester OK. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU3). 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 171... AVIATION...A few severe thunderstorms with hail surface and aloft to 2 inches. Extreme turbulence and surface wind gusts to 70 knots. A few cumulonimbi with maximum tops to 550. Mean storm motion vector 29045. ...Grams