


Severe Thunderstorm Warning
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
342 WUUS55 KTFX 051111 SVRTFX MTC027-051215- /O.NEW.KTFX.SV.W.0139.250805T1111Z-250805T1215Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Great Falls MT 511 AM MDT Tue Aug 5 2025 The National Weather Service in Great Falls has issued a * Severe Thunderstorm Warning for... Southeastern Fergus County in central Montana... * Until 615 AM MDT. * At 510 AM MDT, a severe thunderstorm was located 18 miles southwest of Grass Range, or 20 miles southeast of Lewistown, moving east at 35 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Grass Range and Forestgrove. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4675 10864 4675 10923 4694 10940 4720 10872 4719 10871 4718 10874 4710 10874 4710 10862 4708 10860 4684 10862 TIME...MOT...LOC 1110Z 253DEG 37KT 4685 10911 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ RCG