WWUS20 KWNS 302126 SEL4 SPC WW 302126 SDZ000-310300- URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 534 NWS Storm Prediction Center Norman OK 325 PM MDT Thu Jul 30 2026 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Western into North-Central South Dakota * Effective this Thursday afternoon and evening from 325 PM until 900 PM MDT. * Primary threats include... Scattered damaging wind gusts to 70 mph possible Isolated large hail events to 1 inch in diameter possible SUMMARY...Widely scattered to scattered thunderstorms are forecast to develop and intensify through the early evening. A couple of small thunderstorm clusters may evolve ahead of an upper disturbance as some propensity for storms to produce outflow acts to consolidate the severe risk by early evening. Severe gusts 60 to 70 mph are the primary hazard but isolated large hail near 1 inch in diameter is possible too. The severe thunderstorm watch area is approximately along and 80 statute miles east and west of a line from 50 miles east northeast of Buffalo SD to 60 miles west southwest of Pierre SD. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU4). 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 533... AVIATION...A few severe thunderstorms with hail surface and aloft to 1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 450. Mean storm motion vector 29020. ...Smith