WW 665 SEVERE TSTM ID WY 031955Z – 040400Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 665 NWS Storm Prediction Center Norman OK 155 PM MDT Sun Sep 3 2023 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Southern and Eastern Idaho Western Wyoming * Effective this Sunday afternoon and evening from 155 PM until 1000 PM MDT. * Primary threats include... Scattered damaging wind gusts to 70 mph possible Scattered large hail events to 1.5 inches in diameter possible SUMMARY...Widely scattered thunderstorms will continue to intensify across the region, potentially including a few supercells given a very moist air mass and strong winds aloft. Storms should become more scattered/numerous by late afternoon and early evening, with continued large hail and severe wind gust potential as storms move northeastward across the region. The severe thunderstorm watch area is approximately along and 70 statute miles east and west of a line from 45 miles north of Jackson WY to 20 miles southwest of Malad City ID. 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 664... AVIATION...A few severe thunderstorms with hail surface and aloft to 1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 24030. ...Guyer
