Mainstem Headwaters, Sec. 35, T10n, R22w To South Fork Lolo Creek Trailhead, Sec. 12, T11n, R22w Paddle Report

× Winter Storm Warning
Until 2025-12-19T02:45:00-07:00 • National Weather Service
...ATMOSPHERIC RIVER TO BRING SIGNIFICANT MOUNTAIN SNOW... .A plume of subtropical moisture associated with an atmospheric river will bring significant mountain snow Thursday into Friday. Snow levels will rise above 5,000 feet Thursday night before quickly dropping Friday morning as strong cold front passes. The heaviest snow accumulations will impact higher elevations above 6,000 feet, especially across the Clearwater and Bitterroot Mountains. * WHAT...Heavy snow expected. There is a likelihood of major winter weather impacts to isolated extreme winter storm impacts. Total snow accumulations between 8 to 14 inches for Lolo Pass and 16 to 24 inches for Lost Trail Pass. Winds gusting between 35 and 45 mph. * WHERE...Lolo Pass and Highway 93 Sula to Lost Trail Pass. * WHEN...From 5 PM this afternoon to 5 PM MST Friday. * IMPACTS...For MAJOR winter weather impacts, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. Gusty winds could bring down tree branches, leading to power outages. * ADDITIONAL DETAILS...Snow will briefly change over to rain at Lolo Pass Thursday night, before switching back to snow early Friday morning. For Lost Trail Pass, snowfall rates will exceed one inch per hour for several hours Thursday night into Friday morning.