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SEL8 URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 628 NWS Storm Prediction Center Norman OK 335 PM CDT Fri Aug 16 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northwest Arkansas Extreme southwest Missouri Northern Oklahoma * Effective this Friday afternoon and evening from 335 PM until 1100 PM CDT. * Primary threats include... Scattered damaging winds likely with isolated significant gusts to 75 mph possible Scattered large hail likely with isolated very large hail events to 2.5 inches in diameter possible SUMMARY...Multiple areas of thunderstorm development are possible along and south of the Kansas/Oklahoma border through late evening, in a storm environment favoring organized clusters and supercells. The more intense storms will be capable of producing very large hail up to 2.5 inches in diameter, as well as severe outflow winds up to 75 mph. The severe thunderstorm watch area is approximately along and 35 statute miles north and south of a line from 40 miles west southwest of Alva OK to 30 miles south southeast of Monett MO. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU8). 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 627... 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 600. Mean storm motion vector 30025. ...Thompson