Flash Flood Warning — Hill County, Montana
Flooding is imminent or already occurring. Move to higher ground immediately — never drive through flooded roads.
Current Status
🌊 Active: Flash Flood Warning
Flash Flood Warning issued September 6 at 10:04PM MDT until September 7 at 1:00AM MDT by NWS Great Falls MT
FFWTFX The National Weather Service in Great Falls has issued a * Flash Flood Warning for... Northwestern Hill County in north central Montana... Northeastern Liberty County in north central Montana... * Until 100 AM MDT. * At 1004 PM MDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Up to 2 inches of rain have fallen. The expected rainfall rate is 2 inches in 1 hour. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by slow moving heavy 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... Inverness and Joplin. Expect thunderstorms to repeatedly move over the same areas, which will contribute to flash flooding.
Effective September 7, 2026 at 12:04 AM ET · Expires September 7, 2026 at 3:00 AM ET
Event Details
Event Type
Flash Flood Warning
Severity
severe
Issued By
NWS Great Falls MT
Expires
September 7, 2026 at 3:00 AM ET
Last Checked
4 hours ago
What To Do
📋 Official NWS Guidance
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.
Also In Effect For
This same Flash Flood Warning also covers:
Other Active Alerts in Montana
Hydrologic Outlook
Hydrologic Outlook
Hydrologic Outlook
Flood Advisory
Flood Advisory
Flash Flood Warning
Get Flash Flood Warning Alerts for Hill County
StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.
Frequently Asked Questions
What does a Flash Flood Warning mean for Hill County, Montana?
Flooding is imminent or already occurring. Move to higher ground immediately — never drive through flooded roads.
Is this Flash Flood Warning currently active?
Yes — this alert is active as of our last check (4 hours ago). It's set to expire September 7, 2026 at 3:00 AM ET.
How do I get notified about Flash Flood Warning alerts for Hill County?
Download StormCast free on Google Play and set Hill County, Montana as one of your monitored locations. StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.
What other areas does this alert cover?
This same Flash Flood Warning is also in effect for Liberty County.