Helena-Lewis and Clark National Forest

Winter Storm Warning issued October 11 at 10:29AM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT

10:29 AM — October 12th, 1:30 AM

* WHAT...Heavy, wet snow. Additional snow accumulations between 4 and 9 inches. * WHERE...Elkhorn and Boulder Mountains, Little Belt and Highwood Mountains, and Snowy and Judith Mountains. * WHEN...Until 6 AM MDT Monday. * IMPACTS...Travel could be very difficult. Gusty winds combined with the wet and heavy nature of the snow could bring down tree branches. Isolated power outages are possible. * ADDITIONAL DETAILS...Snowfall amounts will vary drastically from grassy surfaces to roadways, most notably at lower elevations, with accumulations on non-grassy surfaces being confined mainly to between the evening through late morning hours.

Winter Storm Warning issued October 11 at 10:29AM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT

10:29 AM — October 12th, 1:30 AM

* WHAT...Heavy, wet snow. Additional snow accumulations between 3 and 6 inches north of the US Hwy 2 corridor, with 6 to 12 inches possible south of the US Hwy 2 corridor. * WHERE...Portions of central and north central Montana. * WHEN...Until 6 AM MDT Monday. * IMPACTS...Travel could be very difficult. Gusty winds combined with the wet and heavy nature of the snow could bring down tree branches. Isolated power outages are possible. * ADDITIONAL DETAILS...Snowfall amounts will vary drastically from grassy surfaces to roadways, most notably at lower elevations, with accumulations on non-grassy surfaces being confined mainly to between the evening through late morning hours.

Winter Storm Warning issued October 11 at 10:29AM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT

10:29 AM — October 12th, 1:30 AM

* WHAT...Heavy, wet snow. Additional snow accumulations between 3 and 7 inches. Winds gusting as high as 40 mph. * WHERE...Helena Valley, Madison River Valley, and Missouri Headwaters. * WHEN...Until 6 AM MDT Monday. * IMPACTS...Travel could be very difficult. Gusty winds combined with the wet and heavy nature of the snow could bring down tree branches. Isolated power outages are possible. * ADDITIONAL DETAILS...Snowfall amounts will vary drastically from grassy surfaces to roadways, most notably at lower elevations, with accumulations on non-grassy surfaces being confined mainly to between the evening through late morning hours.

Overview

Helena-Lewis and Clark National Forest spans 2.8 million acres across central and north-central Montana, comprising island mountain ranges bisected by the Continental Divide and Missouri River. The forest is currently open with 6 ranger districts (Lincoln, Helena, Townsend, Judith-Musselshell, Rocky Mountain, and Belt Creek-White Sulphur Springs). A December 2025 windstorm recently caused hazards across the forest—numerous trees are down across trails and roads, and weakened trees may fall at any time, requiring extra caution. Key closures include the South Hills trail system near Helena through December 2025, and Forest Service Road #8998. Regional food storage orders are in effect across the NCDE (Northern Continental Divide Ecosystem) area and north half of the Crazy Mountains to prevent bear habituation. The forest offers 28 reservable cabins and group campsites through Recreation.gov, typically available 6 months in advance. The Forest Service is also moving forward with an expansive prescribed fire project to reduce wildfire risk and improve forest health. Christmas tree permits became available December 2025, many permits are free and available online.

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