NWS Great Falls MTFF.W 0006July 22, 2026
Flash Flood Warning: Broadwater and Lewis and Clark, MT
The National Weather Service office in Great Falls issued a flash flood warning for Broadwater and Lewis and Clark in Montana, which was in force until 10:45 p.m. local time on July 22. It was the 6th flash flood warning the NWS office in Great Falls issued in 2026. Montana had 20 flash flood warnings in July 2026, against 5 in an average July of 2008-2025 (Montana's flash flood warnings by year).
ExpiredWarning
In force for 2.9 hours; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Great Falls MT
- Area
- Broadwater and Lewis and Clark
- State
- Montana
- Level
- Warning
- Issued
- 7:54 p.m. MDT, July 22, 2026
- Expires
- 10:45 p.m. MDT, July 22, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Immediate
- VTEC event
- KTFX FF.W 0006
- Official source
- National Weather Service: the notice at its source
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
FFWTFX The National Weather Service in Great Falls has issued a * Flash Flood Warning for... The Horse Gulch burn scar in... Northwestern Broadwater County in southwestern Montana... Southeastern Lewis and Clark County in west central Montana... * Until 1045 PM MDT. * At 754 PM MDT, Doppler radar indicated thunderstorms producing heavy rain over the Horse Gulch Burn Scar. The expected rainfall rate is 1 to 2 inches in 1 hour. 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...Flash flooding caused by thunderstorms in and around the Horse Gulch Burn Scar. SOURCE...Radar indicated. IMPACT...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. The thunderstorm is currently located towards the north side at the higher elevations of the burn scar. Any flooding or debris flow that starts at the higher elevations may impact lower elevations of the burn scar even if those areas do not receive any rainfall.
What the agency told people to do
This is a life threatening situation. Heavy rainfall will cause extensive and severe flash flooding of creeks...streams...and ditches in the Horse Gulch Burn Scar. Severe debris flows can also be anticipated across roads. Roads and driveways may be washed away in places. If you encounter flood waters...climb to safety.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.