WUUS55 KTFX 200350 SVRTFX MTC013-015-049-099-200445- /O.NEW.KTFX.SV.W.0145.250820T0350Z-250820T0445Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Great Falls MT 950 PM MDT Tue Aug 19 2025 The National Weather Service in Great Falls has issued a * Severe Thunderstorm Warning for... Northeastern Lewis and Clark County in west central Montana... Southeastern Teton County in north central Montana... West central Chouteau County in north central Montana... Northwestern Cascade County in central Montana... * Until 1045 PM MDT. * At 949 PM MDT, severe thunderstorms were located along a line extending from 12 miles southwest of Fort Shaw to 7 miles west of Cascade to 14 miles northeast of Wolf Creek, moving northeast at 40 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Great Falls, Cascade, Fairfield, Black Eagle, Fort Shaw, Fort Shaw, Power, Malmstrom Afb, Eden, Stockett, Tracy, Vaughn, First Peoples Buffalo Jump State Park, Centerville, Sun River, Bowmans Corner, Tower Rock State Park, Ulm, Sand Coulee, and Simms. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Large hail, damaging wind, and continuous cloud to ground lightning are occurring with these storms. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. && LAT...LON 4782 11136 4752 11107 4725 11109 4715 11187 4719 11218 4776 11229 TIME...MOT...LOC 0349Z 243DEG 34KT 4737 11197 4728 11186 4718 11188 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ IG