NWS Great Falls MTFF.W 0007September 6, 2026
Flash Flood Warning: Hill and Liberty, MT
The National Weather Service office in Great Falls issued a flash flood warning for Hill and Liberty in Montana, which was in force until 12:45 a.m. local time on September 7. It was the 7th flash flood warning the NWS office in Great Falls issued in 2026. Montana had 4 flash flood warnings in September 2026, against 1 in an average September 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
- Hill and Liberty
- State
- Montana
- Level
- Warning
- Issued
- 9:51 p.m. MDT, September 6, 2026
- Expires
- 12:45 a.m. MDT, September 7, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Immediate
- VTEC event
- KTFX FF.W 0007
- 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... Southwestern Hill County in north central Montana... Southeastern Liberty County in north central Montana... * Until 1245 AM MDT. * At 951 PM MDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. The expected rainfall rate is 1.25 inches in 1 hour. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Mainly rural areas of Southwestern Hill and Southeastern Liberty Counties.
What the agency told people to do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding.
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.