Live · updated 1 min ago
Great Falls weather alerts
No active National Weather Service alerts for Great Falls, Montana right now. The most recent was a Special Weather Statement that ended Oct 17, 4:00 PM.
40 in the last 30 days 88 in 12 months (since Aug 30) most common: Special Weather Statement Get alerts on your phone →
Active alerts for Cascade County
NWS issues alerts by county; Great Falls is in Cascade County. Refreshed every few minutes; times in MDT.
All clear in Cascade County
No warnings, watches or advisories are in effect. See what is active across the country, or check a neighbouring county below.
Get Great Falls alerts on your phone before you think to look them up
Forecast Bar watches the official alert feeds around the clock, NWS in the United States and Environment Canada in Canada, and pushes every warning, watch and advisory for your saved locations the moment it is issued. This page is the same data, a few minutes later.
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Where
Cascade County on the map
Alert polygons are NWS's own. Forecast Bar's radar shows the same warnings over live precipitation, with future radar and lightning. See the radar.
Last 30 days
Recent alerts for Cascade County
| Alert | Issued | Ended | Issued by |
|---|---|---|---|
| Special Weather Statement | Oct 17, 1:00 PM | Oct 17, 4:00 PM | Great Falls MT |
| Dense Fog Advisory | Oct 13, 12:39 AM | Oct 13, 12:00 PM | Great Falls MT |
| Dense Fog Advisory | Oct 12, 12:25 PM | Oct 13, 12:00 PM | Great Falls MT |
| Special Weather Statement | Oct 12, 9:13 AM | Oct 12, 11:00 AM | Great Falls MT |
| Special Weather Statement | Oct 12, 7:07 AM | Oct 12, 9:00 AM | Great Falls MT |
| Winter Storm Warning | Oct 12, 2:34 AM | Oct 12, 6:00 AM | Great Falls MT |
| Winter Storm Warning | Oct 12, 2:34 AM | Oct 12, 6:00 AM | Great Falls MT |
| Winter Storm Warning | Oct 12, 2:34 AM | Oct 12, 6:00 AM | Great Falls MT |
| Winter Storm Warning | Oct 11, 11:30 PM | Oct 12, 6:00 AM | Great Falls MT |
| Winter Storm Warning | Oct 11, 11:30 PM | Oct 12, 6:00 AM | Great Falls MT |
| Winter Storm Warning | Oct 11, 11:30 PM | Oct 12, 6:00 AM | Great Falls MT |
| Winter Storm Warning | Oct 11, 10:29 AM | Oct 12, 6:00 AM | Great Falls MT |
| Winter Storm Warning | Oct 11, 10:29 AM | Oct 12, 6:00 AM | Great Falls MT |
| Winter Storm Warning | Oct 11, 10:29 AM | Oct 12, 6:00 AM | Great Falls MT |
| Winter Storm Warning | Oct 10, 10:40 PM | Oct 12, 6:00 AM | Great Falls MT |
| Winter Storm Warning | Oct 10, 10:40 PM | Oct 12, 6:00 AM | Great Falls MT |
| Winter Storm Warning | Oct 10, 10:40 PM | Oct 12, 6:00 AM | Great Falls MT |
| Winter Storm Warning | Oct 10, 4:13 PM | Oct 12, 6:00 AM | Great Falls MT |
| Winter Storm Warning | Oct 10, 4:13 PM | Oct 12, 6:00 AM | Great Falls MT |
| Winter Storm Warning | Oct 10, 4:13 PM | Oct 12, 6:00 AM | Great Falls MT |
| Winter Storm Warning | Oct 10, 10:56 AM | Oct 12, 6:00 AM | Great Falls MT |
| Winter Storm Warning | Oct 10, 10:56 AM | Oct 12, 6:00 AM | Great Falls MT |
| Winter Storm Warning | Oct 10, 10:56 AM | Oct 12, 6:00 AM | Great Falls MT |
| Winter Storm Warning | Oct 10, 12:32 AM | Oct 12, 6:00 AM | Great Falls MT |
| Winter Storm Warning | Oct 10, 12:32 AM | Oct 12, 6:00 AM | Great Falls MT |
| Winter Storm Warning | Oct 10, 12:32 AM | Oct 12, 6:00 AM | Great Falls MT |
| Red Flag Warning | Oct 9, 8:42 PM | Oct 9, 9:00 PM | Great Falls MT |
| Special Weather Statement | Oct 9, 12:53 PM | Oct 9, 4:00 PM | Great Falls MT |
| Red Flag Warning | Oct 9, 11:53 AM | Oct 9, 9:00 PM | Great Falls MT |
| Winter Storm Warning | Oct 9, 11:29 AM | Oct 12, 6:00 AM | Great Falls MT |
| Winter Storm Warning | Oct 9, 11:29 AM | Oct 12, 6:00 AM | Great Falls MT |
| Winter Storm Warning | Oct 9, 11:29 AM | Oct 12, 6:00 AM | Great Falls MT |
| Winter Storm Watch | Oct 8, 11:48 PM | Oct 11, 6:00 PM | Great Falls MT |
| Winter Storm Watch | Oct 8, 11:48 PM | Oct 11, 6:00 PM | Great Falls MT |
| Winter Storm Watch | Oct 8, 11:48 PM | Oct 11, 6:00 PM | Great Falls MT |
| Red Flag Warning | Oct 8, 11:13 PM | Oct 9, 9:00 PM | Great Falls MT |
| Winter Storm Watch | Oct 8, 2:39 PM | Oct 11, 6:00 PM | Great Falls MT |
| Winter Storm Watch | Oct 8, 2:39 PM | Oct 11, 6:00 PM | Great Falls MT |
| Red Flag Warning | Oct 8, 11:25 AM | Oct 9, 9:00 PM | Great Falls MT |
| Fire Weather Watch | Oct 8, 3:07 AM | Oct 9, 6:00 PM | Great Falls MT |
Pattern
What Cascade County gets alerted for
Every alert that named Cascade County in the last 12 months, by type. Records begin August 30, 2026, so this fills in over the year.
Plain English
What these alerts mean
A warning means the hazard is happening or about to; a watch means conditions favour it; an advisory is a lesser hazard still worth planning around.
A heads-up about conditions that do not meet warning or advisory criteria but still deserve attention, such as a strong storm, patchy fog or a brief burst of snow.
Visibility of a quarter mile or less is expected. Slow down and use low beams.
Heavy snow, sleet or ice that makes travel dangerous is occurring or imminent. Avoid travel if you can.
Critical fire weather: dry fuels, low humidity and gusty winds. Any fire can spread rapidly; avoid outdoor burning.
A significant winter storm is possible. Prepare for hazardous travel and stock up ahead of time.
Critical fire weather conditions are possible. Postpone outdoor burning.
Conditions may lead to flash flooding. Be ready to move to higher ground.
A storm with hail of 1 inch or larger, winds of 58 mph or more, or both, is occurring or imminent. Move indoors and away from windows.
Flooding may develop over the coming days as rain, snowmelt or river levels rise.
Minor flooding of streets, streams or low-lying areas is expected. Expect ponding on roads and use caution when driving.
Conditions are favourable for severe thunderstorms with large hail or damaging wind. Keep an eye on the sky and on warnings.
Nearby
Alerts near Great Falls
Cities
Neighbouring counties in Montana
Questions
About Great Falls alerts
How do I get Great Falls weather alerts on my iPhone?
Install Forecast Bar, add Great Falls as a location, and turn on severe weather alerts. Every NWS warning, watch and advisory for Cascade County then arrives as a push notification at the moment of issue, with Critical Alerts available for the most dangerous warnings. Forecast Bar also runs on iPad, Apple Watch, Mac and Apple TV.
Where do these alerts come from?
From the National Weather Service alert feed (api.weather.gov). NWS issues alerts by county and by forecast zone; this page lists every product that names Cascade County, the county Great Falls sits in. Forecast Bar checks the feed continuously and this page refreshes within a few minutes of a change.
What is the difference between a watch, a warning and an advisory?
A warning means the hazard is occurring, imminent or very likely: act now. A watch means conditions are favourable for it to develop: prepare and stay informed. An advisory covers a hazard that is less serious than a warning but can still cause real inconvenience or danger if you are not ready for it.
Can I get this data as JSON?
Yes. /weather-alerts/mt/great-falls.json returns the active alerts, the last 30 days and the 12-month counts for Great Falls, refreshed every minute. Please cache responses and credit National Weather Service as the source.
Never find out about a Cascade County alert from this page again
Add Great Falls in Forecast Bar and every NWS warning, watch and advisory arrives as a push notification the moment it is issued, on iPhone, iPad, Apple Watch, Mac and Apple TV.
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