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SEL9 URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 609 NWS Storm Prediction Center Norman OK 455 PM MDT Tue Aug 6 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northern into Central and Eastern Montana * Effective this Tuesday afternoon from 455 PM until Midnight MDT. * Primary threats include... Scattered damaging wind gusts to 70 mph possible Isolated very large hail events to 2 inches in diameter possible SUMMARY...Widely scattered to scattered thunderstorms will continue to develop and intensify through the mid evening. The stronger initial cellular storms will pose an isolated risk for large hail (1 to 2 inches in diameter) and severe gusts. Additional storms with some outflow merging and upscale growth into one or more clusters is expected later this evening. Severe gusts (60-70 mph) and perhaps large hail may accompany this activity late this evening into the early overnight. The severe thunderstorm watch area is approximately along and 90 statute miles north and south of a line from 75 miles north northwest of Drummond MT to 20 miles northeast of Glendive MT. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU9). 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 605...WW 606...WW 607...WW 608... 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 450. Mean storm motion vector 27035. ...Smith