Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for Watch Status Reports.
SEL3 URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 533 NWS Storm Prediction Center Norman OK 500 PM CDT Sun Jul 14 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northeast Montana Western and Northern North Dakota * Effective this Sunday afternoon from 500 PM until Midnight CDT. * Primary threats include... Scattered large hail likely with isolated very large hail events to 2.5 inches in diameter possible Scattered damaging winds and isolated significant gusts to 75 mph possible A tornado or two possible SUMMARY...Supercell thunderstorms are expected to develop this afternoon and evening and move slowly east-southeastward. The most intense thunderstorms should be capable of producing large to very large hail around 1.5-2.5 inches in diameter. The potential for severe/damaging winds is more uncertain. But, if activity can grow into a bowing cluster later this evening, then peak wind speeds may reach 65-75 mph. The severe thunderstorm watch area is approximately along and 55 statute miles north and south of a line from 5 miles southwest of Glasgow MT to 95 miles east of Minot ND. 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. && 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 500. Mean storm motion vector 30025. ...Gleason