WWUS20 KWNS 032054 SEL5 SPC WW 032054 SDZ000-040000- URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 425 NWS Storm Prediction Center Norman OK 400 PM CDT Sun Jul 3 2022 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Southeast South Dakota * Effective this Sunday afternoon and evening from 400 PM until 700 PM CDT. * Primary threats include... Isolated very large hail events to 2 inches in diameter possible Isolated damaging wind gusts to 70 mph possible SUMMARY...Initially elevated cells have consolidated into a surface-based supercell that may persist southeast across southeast South Dakota with a threat for large hail and damaging wind. The severe thunderstorm watch area is approximately along and 40 statute miles east and west of a line from 30 miles east northeast of Huron SD to 30 miles south southwest of Sioux Falls SD. 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. && OTHER WATCH INFORMATION...CONTINUE...WW 423...WW 424... 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 550. Mean storm motion vector 31025. ...Grams