Alert archive / Montana / Cascade County
Weather alerts in Cascade County, Montana, 2025
200 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Cascade County and its neighbors
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Alerts
- 200
- Warnings
- 51
- Watches
- 29
- Advisories
- 58
- Busiest month
- August29 alerts
- Busiest day
- August 1, 202513 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Cascade County, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 21 | 10 | 52% | 33 | 88% | 25 min |
| Flash flood warnings | 1 | 1 | 0% | 2 | 100% | 32 min |
Each office's whole area, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Great Falls, MT: tornado warnings | 2 | 0 | 100% | 0 | ||
| NWS Great Falls, MT: severe thunderstorm warnings | 165 | 54 | 67% | 192 | 55% | 24 min |
| NWS Great Falls, MT: flash flood warnings | 5 | 1 | 80% | 2 | 100% | 32 min |
An office's figures cover every county it serves, including across state lines.
Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.
The alerts
Every alert, in the order issued. Times are local, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 2, 1:30 AM MST | Winter Storm Watch | TFX | 11 hr |
| Jan 2, 1:30 AM MST | Winter Weather Advisory | TFX | 55 hr |
| Jan 2, 12:47 PM MST | Winter Storm Warning | TFX | 52 hr |
| Jan 4, 1:31 PM MST | Winter Weather Advisory | TFX | 45 hr |
| Jan 7, 2:21 AM MST | Winter Weather Advisory | TFX | 51 hr |
| Jan 8, 1:37 PM MST | Winter Storm Watch | TFX | 23 hr |
| Jan 9, 12:59 PM MST | Winter Storm Warning | TFX | 3 days |
| Jan 9, 12:59 PM MST | Winter Weather Advisory | TFX | 3 days |
| Jan 10, 2:09 AM MST | Winter Weather Advisory | TFX | 35 hr |
| Jan 11, 1:37 PM MST | Winter Weather Advisory | TFX | 15 hr |
| Jan 12, 8:20 PM MST | Winter Weather Advisory | TFX | 9 hr |
| Jan 13, 2:53 AM MST | High Wind Watch | TFX | 47 hr |
| Jan 15, 1:52 AM MST | High Wind Warning | TFX | 42 hr |
| Jan 16, 1:58 AM MST | Winter Weather Advisory | TFX | 63 hr |
| Jan 18, 2:38 AM MST | Cold Weather Advisory | TFX | 57 hr |
| Jan 19, 12:12 PM MST | Extreme Cold Warning | TFX | 24 hr |
| Jan 20, 1:19 PM MST | Winter Weather Advisory | TFX | 24 hr |
| Jan 20, 1:19 PM MST | Winter Weather Advisory | TFX | 52 hr |
| Jan 21, 12:56 PM MST | Winter Storm Warning | TFX | 32 hr |
| Jan 22, 8:59 AM MST | Blizzard Warning | TFX | 8 hr |
| Jan 23, 3:23 AM MST | Winter Weather Advisory | TFX | 42 hr |
| Jan 23, 12:42 PM MST | Winter Storm Warning | TFX | 33 hr |
| Jan 29, 1:30 PM MST | Winter Storm Watch | TFX | 5 days |
| Jan 30, 2:06 AM MST | High Wind Watch | TFX | 23 hr |
| Jan 31, 1:11 AM MST | High Wind Warning | TFX | 39 hr |
| Feb 1, 2:52 PM MST | Winter Weather Advisory | TFX | 43 hr |
| Feb 2, 1:45 AM MST | Cold Weather Advisory | TFX | 57 hr |
| Feb 2, 9:07 AM MST | Winter Storm Warning | TFX | 3 days |
| Feb 2, 1:51 PM MST | Winter Weather Advisory | TFX | 3 days |
| Feb 4, 10:43 AM MST | Cold Weather Advisory | TFX | 26 hr |
| Feb 6, 1:26 AM MST | Winter Weather Advisory | TFX | 39 hr |
| Feb 7, 8:18 PM MST | Cold Weather Advisory | TFX | 14 hr |
| Feb 8, 1:17 AM MST | Extreme Cold Watch | TFX | 49 hr |
| Feb 9, 2:38 AM MST | Extreme Cold Warning | TFX | 56 hr |
| Feb 11, 2:23 AM MST | Cold Weather Advisory | TFX | 33 hr |
| Feb 12, 1:17 AM MST | Cold Weather Advisory | TFX | 32 hr |
| Feb 13, 1:04 PM MST | Winter Weather Advisory | TFX | 45 hr |
| Feb 14, 12:44 PM MST | Winter Storm Watch | TFX | 25 hr |
| Feb 15, 1:47 PM MST | Winter Storm Warning | TFX | 52 hr |
| Feb 15, 1:47 PM MST | Winter Weather Advisory | TFX | 3 days |
| Feb 16, 1:29 PM MST | Cold Weather Advisory | TFX | 71 hr |
| Feb 16, 1:29 PM MST | Extreme Cold Warning | TFX | 71 hr |
| Feb 18, 1:28 PM MST | Winter Weather Advisory | TFX | 68 hr |
| Feb 19, 11:36 AM MST | Cold Weather Advisory | TFX | 21 hr |
| Feb 20, 1:17 AM MST | High Wind Watch | TFX | 3 days |
| Feb 22, 10:11 AM MST | High Wind Warning | TFX | 51 hr |
| Feb 23, 1:00 PM MST | High Wind Watch | TFX | 31 hr |
| Feb 24, 11:36 PM MST | Areal Flood Advisory | TFX | 4 days |
| Feb 28, 12:50 PM MST | Areal Flood Advisory | TFX | 57 hr |
| Mar 3, 2:30 AM MST | Winter Weather Advisory | TFX | 31 hr |
| Mar 7, 11:10 AM MST | High Wind Watch | TFX | 38 hr |
| Mar 8, 1:36 PM MST | High Wind Warning | TFX | 47 hr |
| Mar 20, 1:37 PM MDT | Winter Weather Advisory | TFX | 55 hr |
| Mar 23, 2:44 AM MDT | Winter Weather Advisory | TFX | 25 hr |
| Mar 27, 2:34 AM MDT | Winter Storm Watch | TFX | 24 hr |
| Mar 28, 2:45 AM MDT | Winter Weather Advisory | TFX | 57 hr |
| Mar 30, 1:15 PM MDT | Winter Storm Watch | TFX | 14 hr |
| Mar 31, 2:55 AM MDT | Winter Storm Warning | TFX | 51 hr |
| Mar 31, 2:55 AM MDT | Winter Weather Advisory | TFX | 51 hr |
| Apr 2, 3:14 AM MDT | Winter Weather Advisory | TFX | 48 hr |
| Apr 3, 3:09 AM MDT | Dense Fog Advisory | TFX | 6 hr |
| Apr 12, 12:10 PM MDT | Winter Weather Advisory | TFX | 21 hr |
| Apr 15, 2:13 PM MDT | Winter Weather Advisory | TFX | 48 hr |
| Apr 20, 6:08 PM MDT | Special Weather Statement | TFX | 37 min |
| Apr 26, 5:03 PM MDT | Special Weather Statement | TFX | 42 min |
| May 3, 1:21 PM MDT | Winter Weather Advisory | TFX | 62 hr |
| May 10, 2:26 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 10, 3:05 PM MDT | Severe Thunderstorm Warning | TFX | 55 min |
| May 10, 5:13 PM MDT | Special Weather Statement | TFX | 62 min |
| May 10, 6:34 PM MDT | Special Weather Statement | TFX | 56 min |
| May 10, 7:05 PM MDT | Severe Thunderstorm Warning | TFX | 55 min |
| May 11, 2:13 PM MDT | Special Weather Statement | TFX | 32 min |
| May 11, 2:44 PM MDT | Severe Thunderstorm Warning | TFX | 46 min |
| May 11, 3:27 PM MDT | Severe Thunderstorm Warning | TFX | 63 min |
| May 11, 3:32 PM MDT | Special Weather Statement | TFX | 43 min |
| May 11, 3:57 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 26, 6:14 PM MDT | Special Weather Statement | TFX | 61 min |
| May 26, 7:44 PM MDT | Special Weather Statement | TFX | 61 min |
| Jun 10, 12:44 PM MDT | Mesoscale Discussion | SPC | 61 min |
| Jun 10, 5:44 PM MDT | Special Weather Statement | TFX | 31 min |
| Jun 10, 6:14 PM MDT | Special Weather Statement | TFX | 31 min |
| Jun 12, 8:10 PM MDT | Special Weather Statement | TFX | 20 min |
| Jun 13, 11:45 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 1:03 PM MDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jun 15, 2:15 PM MDT | Severe Thunderstorm Watch | SPC | 11 hr |
| Jun 15, 3:16 PM MDT | Special Weather Statement | TFX | 29 min |
| Jun 15, 3:23 PM MDT | Severe Thunderstorm Warning | TFX | 52 min |
| Jun 15, 3:49 PM MDT | Severe Thunderstorm Warning | TFX | 41 min |
| Jun 15, 4:22 PM MDT | Severe Thunderstorm Warning | TFX | 38 min |
| Jun 15, 4:48 PM MDT | Severe Thunderstorm Warning | TFX | 27 min |
| Jun 15, 4:53 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Jun 19, 10:17 PM MDT | Special Weather Statement | TFX | 43 min |
| Jun 20, 3:14 AM MDT | Winter Weather Advisory | TFX | 57 hr |
| Jun 20, 12:32 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 27, 12:35 PM MDT | Special Weather Statement | TFX | 25 min |
| Jun 27, 12:58 PM MDT | Special Weather Statement | TFX | 47 min |
| Jun 27, 1:05 PM MDT | Severe Thunderstorm Warning | TFX | 40 min |
| Jul 2, 2:42 PM MDT | Mesoscale Discussion | SPC | 93 min |
| Jul 2, 7:26 PM MDT | Special Weather Statement | TFX | 64 min |
| Jul 2, 7:35 PM MDT | Special Weather Statement | TFX | 55 min |
| Jul 4, 4:05 PM MDT | Special Weather Statement | TFX | 55 min |
| Jul 4, 8:03 PM MDT | Special Weather Statement | TFX | 72 min |
| Jul 7, 1:43 PM MDT | Heat Advisory | TFX | 54 hr |
| Jul 9, 5:25 PM MDT | Severe Thunderstorm Warning | TFX | 50 min |
| Jul 17, 2:48 PM MDT | Mesoscale Discussion | SPC | 117 min |
| Jul 26, 4:05 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Jul 27, 5:25 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 28, 12:07 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Jul 28, 1:16 PM MDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jul 28, 3:12 PM MDT | Severe Thunderstorm Warning | TFX | 63 min |
| Jul 28, 3:46 PM MDT | Special Weather Statement | TFX | 44 min |
| Jul 28, 3:51 PM MDT | Severe Thunderstorm Warning | TFX | 54 min |
| Jul 28, 4:00 PM MDT | Special Weather Statement | TFX | 60 min |
| Jul 28, 4:03 PM MDT | Severe Thunderstorm Warning | TFX | 42 min |
| Jul 28, 4:28 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Jul 28, 4:31 PM MDT | Special Weather Statement | TFX | 44 min |
| Jul 28, 4:38 PM MDT | Severe Thunderstorm Warning | TFX | 52 min |
| Jul 28, 5:00 PM MDT | Special Weather Statement | TFX | 30 min |
| Jul 28, 5:17 PM MDT | Special Weather Statement | TFX | 28 min |
| Jul 31, 6:47 PM MDT | Special Weather Statement | TFX | 28 min |
| Jul 31, 8:07 PM MDT | Special Weather Statement | TFX | 38 min |
| Jul 31, 8:12 PM MDT | Special Weather Statement | TFX | 48 min |
| Jul 31, 9:03 PM MDT | Severe Thunderstorm Warning | TFX | 42 min |
| Jul 31, 9:13 PM MDT | Flash Flood Warning | TFX | 3 hr |
| Jul 31, 9:20 PM MDT | Areal Flood Advisory | TFX | 3 hr |
| Jul 31, 9:48 PM MDT | Special Weather Statement | TFX | 42 min |
| Aug 1, 3:07 AM MDT | Flood Watch | TFX | 23 hr |
| Aug 1, 4:25 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 1, 5:21 PM MDT | Special Weather Statement | TFX | 24 min |
| Aug 1, 5:29 PM MDT | Special Weather Statement | TFX | 46 min |
| Aug 1, 5:50 PM MDT | Areal Flood Advisory | TFX | 5 hr |
| Aug 1, 5:58 PM MDT | Special Weather Statement | TFX | 32 min |
| Aug 1, 6:19 PM MDT | Special Weather Statement | TFX | 56 min |
| Aug 4, 2:35 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Aug 4, 4:41 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 4, 6:38 PM MDT | Special Weather Statement | TFX | 52 min |
| Aug 4, 6:43 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Aug 4, 6:56 PM MDT | Severe Thunderstorm Warning | TFX | 34 min |
| Aug 4, 7:39 PM MDT | Special Weather Statement | TFX | 51 min |
| Aug 16, 7:07 PM MDT | Special Weather Statement | TFX | 38 min |
| Aug 16, 7:42 PM MDT | Special Weather Statement | TFX | 48 min |
| Aug 16, 8:24 PM MDT | Special Weather Statement | TFX | 51 min |
| Aug 18, 7:41 PM MDT | Special Weather Statement | TFX | 64 min |
| Aug 18, 8:07 PM MDT | Severe Thunderstorm Warning | TFX | 38 min |
| Aug 19, 9:50 PM MDT | Severe Thunderstorm Warning | TFX | 55 min |
| Aug 19, 10:43 PM MDT | Severe Thunderstorm Warning | TFX | 50 min |
| Aug 20, 2:49 PM MDT | Mesoscale Discussion | SPC | 116 min |
| Aug 20, 2:56 PM MDT | Special Weather Statement | TFX | 34 min |
| Sep 9, 10:36 PM MDT | Special Weather Statement | TFX | 54 min |
| Sep 12, 3:56 PM MDT | Special Weather Statement | TFX | 64 min |
| Sep 14, 7:57 PM MDT | Special Weather Statement | TFX | 48 min |
| Sep 14, 8:12 PM MDT | Severe Thunderstorm Warning | TFX | 63 min |
| Sep 14, 9:13 PM MDT | Special Weather Statement | TFX | 47 min |
| Sep 15, 4:53 PM MDT | Areal Flood Advisory | TFX | 3 hr |
| Sep 15, 5:29 PM MDT | Areal Flood Advisory | TFX | 3 hr |
| Oct 3, 1:34 PM MDT | Winter Weather Advisory | TFX | 46 hr |
| Oct 9, 2:02 PM MDT | Winter Storm Watch | TFX | 36 hr |
| Oct 10, 4:11 PM MDT | Winter Storm Warning | TFX | 65 hr |
| Oct 11, 2:30 AM MDT | Winter Weather Advisory | TFX | 63 hr |
| Oct 17, 12:06 AM MDT | High Wind Watch | TFX | 49 hr |
| Oct 18, 1:42 PM MDT | High Wind Warning | TFX | 29 hr |
| Oct 18, 2:43 PM MDT | Winter Weather Advisory | TFX | 45 hr |
| Oct 25, 11:55 PM MDT | Special Weather Statement | TFX | 50 min |
| Oct 30, 2:54 AM MDT | High Wind Watch | TFX | 47 hr |
| Oct 31, 1:46 PM MDT | High Wind Warning | TFX | 49 hr |
| Nov 7, 2:10 AM MST | High Wind Warning | TFX | 24 hr |
| Nov 22, 12:58 PM MST | Winter Weather Advisory | TFX | 58 hr |
| Nov 25, 12:48 PM MST | Winter Storm Watch | TFX | 48 hr |
| Nov 26, 12:48 AM MST | Winter Weather Advisory | TFX | 9 hr |
| Nov 26, 11:59 PM MST | Winter Storm Warning | TFX | 50 hr |
| Nov 26, 11:59 PM MST | Winter Weather Advisory | TFX | 50 hr |
| Nov 30, 1:56 AM MST | Freezing Fog Advisory | TFX | 7 hr |
| Nov 30, 1:09 PM MST | Winter Weather Advisory | TFX | 64 hr |
| Dec 3, 1:33 PM MST | Winter Storm Watch | TFX | 48 hr |
| Dec 4, 2:19 AM MST | Winter Storm Warning | TFX | 60 hr |
| Dec 7, 2:47 AM MST | High Wind Watch | TFX | 25 hr |
| Dec 8, 3:28 AM MST | High Wind Warning | TFX | 36 hr |
| Dec 9, 3:20 AM MST | Winter Weather Advisory | TFX | 33 hr |
| Dec 9, 2:48 PM MST | Winter Storm Watch | TFX | 46 hr |
| Dec 9, 2:56 PM MST | High Wind Warning | TFX | 46 hr |
| Dec 10, 12:41 PM MST | Winter Weather Advisory | TFX | 48 hr |
| Dec 11, 12:59 PM MST | Winter Storm Warning | TFX | 40 hr |
| Dec 13, 1:53 PM MST | High Wind Watch | TFX | 24 hr |
| Dec 14, 1:54 PM MST | High Wind Watch | TFX | 13 hr |
| Dec 14, 1:54 PM MST | High Wind Watch | TFX | 24 hr |
| Dec 14, 1:54 PM MST | High Wind Warning | TFX | 44 hr |
| Dec 15, 2:13 PM MST | High Wind Warning | TFX | 61 hr |
| Dec 16, 2:41 PM MST | Winter Weather Advisory | TFX | 32 hr |
| Dec 17, 12:47 PM MST | Snow Squall Warning | TFX | 28 min |
| Dec 18, 2:43 AM MST | High Wind Watch | TFX | 11 hr |
| Dec 18, 1:42 PM MST | High Wind Warning | TFX | 28 hr |
| Dec 24, 3:29 AM MST | Winter Storm Watch | TFX | 11 hr |
| Dec 24, 1:53 PM MST | Dense Fog Advisory | TFX | 17 hr |
| Dec 24, 2:02 PM MST | Winter Weather Advisory | TFX | 17 hr |
| Dec 26, 12:31 AM MST | Winter Weather Advisory | TFX | 41 hr |
| Dec 26, 12:11 PM MST | Special Weather Statement | TFX | 49 min |
| Dec 26, 12:23 PM MST | Severe Thunderstorm Warning | TFX | 38 min |
| Dec 26, 2:17 PM MST | Cold Weather Advisory | TFX | 45 hr |
| Dec 27, 9:15 AM MST | Snow Squall Warning | TFX | 45 min |
| Dec 27, 10:00 AM MST | Special Weather Statement | TFX | 45 min |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 21 |
| Severe Thunderstorm Watch | 4 |
| Mesoscale Discussion | 16 |
| Special Weather Statement | 46 |
| Flooding | |
| Flash Flood Warning | 1 |
| Flood Watch | 1 |
| Areal Flood Advisory | 6 |
| Winter | |
| Blizzard Warning | 1 |
| Snow Squall Warning | 2 |
| Winter Storm Warning | 11 |
| Winter Storm Watch | 11 |
| Winter Weather Advisory | 39 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Extreme Cold Warning | 3 |
| Extreme Cold Watch | 1 |
| Cold Weather Advisory | 9 |
| Wind and dust | |
| High Wind Warning | 12 |
| High Wind Watch | 12 |
| Fog and smoke | |
| Dense Fog Advisory | 2 |
| Freezing Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20242026
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.