USA 250 Shirt →

Helena-Lewis and Clark National Forest

Flash Flood Warning issued July 22 at 8:28PM MDT until July 22 at 10:45PM MDT by NWS Great Falls MT

8:28 PM — 10:45 PM

At 828 PM MDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain over the Horse Gulch Burn Scar. Up to 1 inch of rain has fallen. The expected rainfall rate is 1 to 2 inches in 1 hour. Additional rainfall amounts up to 1 inch are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. Excessive rainfall over the burn scar will result in debris flow. The debris flow can consist of rock, mud, vegetation and other loose materials. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding in and around the Horse Gulch Burn Scar. SOURCE...Radar and automated gauges. IMPACT...Life threatening flash flooding of areas in and around the Horse Gulch Burn Scar. Some locations that will experience flash flooding include... Mainly rural areas of Northwestern Broadwater and Southeastern Lewis and Clark Counties.

Flood Advisory issued July 22 at 8:15PM MDT until July 22 at 11:15PM MDT by NWS Great Falls MT

8:15 PM — 11:15 PM

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Central Lewis and Clark County in west central Montana... * WHEN...Until 1115 PM MDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 815 PM MDT, Doppler radar indicated heavy rain with rainfall rates in excess of 1 inch per hour due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. - Some locations that will experience flooding include... Mainly rural areas of Central Lewis and Clark County. - http://www.weather.gov/safety/flood

Flood Advisory issued July 22 at 5:48PM MDT until July 22 at 8:45PM MDT by NWS Great Falls MT

5:48 PM — 8:45 PM

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Northeastern Gallatin County in south central Montana... * WHEN...Until 845 PM MDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 547 PM MDT, Doppler radar indicated heavy rain with rainfall rates in excess of 1 inch per hour due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. - Some locations that will experience flooding include... Mainly rural areas of Northeastern Gallatin County. - http://www.weather.gov/safety/flood

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.

Community Posts

No posts yet. Be the first to share your experience!