Alert archive / Montana / Chouteau County
Weather alerts in Chouteau County, Montana, 2024
182 weather alerts in 2024, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Chouteau County and its neighbors
Each county as a circle sized by its count in 2024. Tap one for its archive.
- Alerts
- 182
- Warnings
- 55
- Watches
- 26
- Advisories
- 49
- Busiest month
- August47 alerts
- Busiest day
- August 20, 202410 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Chouteau County, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 31 | 15 | 52% | 6 | 83% | 30 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Great Falls, MT: severe thunderstorm warnings | 139 | 54 | 61% | 152 | 57% | 19 min |
| NWS Great Falls, MT: flash flood warnings | 2 | 0 | 100% | 1 | 0% |
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 6, 1:38 PM MST | High Wind Watch | TFX | 3 days |
| Jan 8, 2:28 AM MST | Winter Weather Advisory | TFX | 3 days |
| Jan 9, 2:12 AM MST | Wind Chill Advisory | TFX | 63 hr |
| Jan 9, 2:27 PM MST | Winter Storm Watch | TFX | 24 hr |
| Jan 10, 12:55 AM MST | Wind Chill Warning | TFX | 5 days |
| Jan 10, 12:55 AM MST | Wind Chill Advisory | TFX | 6 days |
| Jan 10, 2:05 PM MST | Winter Weather Advisory | TFX | 44 hr |
| Jan 14, 1:29 PM MST | Wind Chill Advisory | TFX | 44 hr |
| Jan 15, 3:07 AM MST | Winter Storm Watch | TFX | 36 hr |
| Jan 16, 2:41 AM MST | Winter Storm Warning | TFX | 56 hr |
| Jan 17, 3:22 AM MST | Wind Chill Advisory | TFX | 57 hr |
| Jan 19, 2:37 PM MST | Winter Weather Advisory | TFX | 44 hr |
| Jan 21, 1:22 PM MST | Winter Weather Advisory | TFX | 22 hr |
| Jan 22, 3:07 PM MST | Dense Fog Advisory | TFX | 46 hr |
| Feb 1, 1:28 PM MST | Winter Weather Advisory | TFX | 70 hr |
| Feb 2, 3:22 AM MST | Winter Storm Warning | TFX | 58 hr |
| Feb 5, 8:02 PM MST | Dense Fog Advisory | TFX | 33 hr |
| Feb 6, 2:44 AM MST | Winter Storm Warning | TFX | 56 hr |
| Feb 6, 2:44 AM MST | Winter Weather Advisory | TFX | 4 days |
| Feb 11, 12:07 PM MST | Winter Weather Advisory | TFX | 71 hr |
| Feb 13, 12:58 PM MST | Winter Weather Advisory | TFX | 64 hr |
| Feb 16, 8:42 PM MST | Wind Chill Advisory | TFX | 12 hr |
| Feb 23, 2:57 AM MST | High Wind Watch | TFX | 33 hr |
| Feb 24, 12:03 PM MST | High Wind Warning | TFX | 53 hr |
| Feb 24, 1:35 PM MST | Winter Weather Advisory | TFX | 57 hr |
| Feb 26, 1:34 AM MST | Wind Chill Advisory | TFX | 32 hr |
| Feb 26, 8:25 AM MST | Snow Squall Warning | TFX | 35 min |
| Mar 1, 1:03 PM MST | Winter Weather Advisory | TFX | 39 hr |
| Mar 2, 12:47 PM MST | Special Weather Statement | TFX | 58 min |
| Mar 2, 1:44 PM MST | Special Weather Statement | TFX | 46 min |
| Mar 2, 2:38 PM MST | Special Weather Statement | TFX | 82 min |
| Mar 2, 5:14 PM MST | Special Weather Statement | TFX | 91 min |
| Mar 3, 2:28 AM MST | Wind Chill Advisory | TFX | 32 hr |
| Mar 19, 1:55 PM MDT | Winter Weather Advisory | TFX | 4 days |
| Mar 20, 1:34 PM MDT | Winter Storm Watch | TFX | 48 hr |
| Mar 22, 1:29 PM MDT | Winter Storm Warning | TFX | 44 hr |
| Mar 22, 1:29 PM MDT | Winter Weather Advisory | TFX | 68 hr |
| Mar 29, 2:48 AM MDT | Winter Weather Advisory | TFX | 18 hr |
| Mar 30, 1:48 PM MDT | Dense Fog Advisory | TFX | 22 hr |
| Apr 5, 2:34 AM MDT | Winter Weather Advisory | TFX | 66 hr |
| Apr 14, 2:42 AM MDT | Winter Weather Advisory | TFX | 3 days |
| Apr 28, 1:32 PM MDT | Winter Storm Watch | TFX | 50 hr |
| Apr 29, 1:35 PM MDT | Winter Storm Warning | TFX | 3 days |
| Apr 29, 1:35 PM MDT | Winter Weather Advisory | TFX | 3 days |
| Apr 30, 3:45 PM MDT | Severe Thunderstorm Warning | TFX | 45 min |
| Apr 30, 4:12 PM MDT | High Wind Warning | TFX | 3 hr |
| May 4, 1:52 PM MDT | Winter Storm Watch | TFX | 37 hr |
| May 5, 1:40 PM MDT | Winter Storm Warning | TFX | 3 days |
| May 5, 2:00 PM MDT | High Wind Watch | TFX | 13 hr |
| May 5, 2:00 PM MDT | High Wind Warning | TFX | 64 hr |
| May 6, 2:07 PM MDT | Blizzard Warning | TFX | 48 hr |
| May 6, 2:07 PM MDT | Winter Weather Advisory | TFX | 46 hr |
| May 7, 9:58 AM MDT | Areal Flood Advisory | TFX | 48 hr |
| May 9, 9:48 AM MDT | Flood Watch | TFX | 3 days |
| May 19, 10:59 AM MDT | Flood Watch | TFX | 4 days |
| May 21, 2:42 PM MDT | Winter Storm Warning | TFX | 50 hr |
| May 31, 12:27 PM MDT | High Wind Watch | TFX | 50 hr |
| Jun 2, 2:25 PM MDT | High Wind Watch | TFX | 24 hr |
| Jun 2, 2:25 PM MDT | High Wind Warning | TFX | 70 hr |
| Jun 13, 1:59 PM MDT | Winter Storm Watch | TFX | 60 hr |
| Jun 15, 12:21 PM MDT | Severe Thunderstorm Warning | TFX | 24 min |
| Jun 15, 12:55 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 15, 1:04 PM MDT | Severe Thunderstorm Warning | TFX | 41 min |
| Jun 15, 1:42 PM MDT | Special Weather Statement | TFX | 63 min |
| Jun 16, 2:25 AM MDT | Winter Weather Advisory | TFX | 58 hr |
| Jun 18, 4:53 PM MDT | Special Weather Statement | TFX | 37 min |
| Jun 19, 1:09 AM MDT | Dense Fog Advisory | TFX | 6 hr |
| Jun 19, 8:05 PM MDT | Special Weather Statement | TFX | 25 min |
| Jun 21, 11:35 AM MDT | Mesoscale Discussion | SPC | 115 min |
| Jun 21, 12:39 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 21, 2:58 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Jun 21, 3:51 PM MDT | Severe Thunderstorm Warning | TFX | 54 min |
| Jun 21, 4:15 PM MDT | Severe Thunderstorm Warning | TFX | 60 min |
| Jun 21, 4:35 PM MDT | Severe Thunderstorm Warning | TFX | 25 min |
| Jun 21, 5:07 PM MDT | Severe Thunderstorm Warning | TFX | 53 min |
| Jun 21, 5:27 PM MDT | Mesoscale Discussion | SPC | 93 min |
| Jun 21, 5:52 PM MDT | Severe Thunderstorm Warning | TFX | 38 min |
| Jun 21, 6:22 PM MDT | Severe Thunderstorm Warning | TFX | 53 min |
| Jun 21, 6:26 PM MDT | Special Weather Statement | TFX | 34 min |
| Jun 26, 9:13 PM MDT | Special Weather Statement | TFX | 32 min |
| Jul 2, 2:01 PM MDT | Special Weather Statement | TFX | 44 min |
| Jul 2, 2:21 PM MDT | Special Weather Statement | TFX | 24 min |
| Jul 2, 2:44 PM MDT | Special Weather Statement | TFX | 31 min |
| Jul 2, 2:49 PM MDT | Special Weather Statement | TFX | 26 min |
| Jul 2, 3:20 PM MDT | Special Weather Statement | TFX | 25 min |
| Jul 3, 12:46 PM MDT | Special Weather Statement | TFX | 29 min |
| Jul 5, 1:29 PM MDT | Special Weather Statement | TFX | 31 min |
| Jul 5, 2:02 PM MDT | Special Weather Statement | TFX | 73 min |
| Jul 5, 2:09 PM MDT | Special Weather Statement | TFX | 66 min |
| Jul 5, 2:31 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Jul 5, 3:13 PM MDT | Special Weather Statement | TFX | 32 min |
| Jul 5, 3:43 PM MDT | Special Weather Statement | TFX | 32 min |
| Jul 18, 1:32 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Jul 21, 3:04 PM MDT | Fire Weather Watch | TFX | 71 hr |
| Jul 21, 3:11 PM MDT | Heat Advisory | TFX | 11 hr |
| Jul 22, 2:40 AM MDT | Heat Advisory | TFX | 4 days |
| Jul 22, 2:35 PM MDT | Red Flag Warning | TFX | 3 days |
| Jul 24, 2:33 PM MDT | Special Weather Statement | TFX | 42 min |
| Jul 24, 3:39 PM MDT | Special Weather Statement | TFX | 51 min |
| Jul 25, 12:02 AM MDT | High Wind Warning | TFX | 3 hr |
| Jul 25, 2:48 PM MDT | Special Weather Statement | TFX | 42 min |
| Jul 25, 3:23 PM MDT | Special Weather Statement | TFX | 52 min |
| Jul 25, 3:47 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 3, 10:06 PM MDT | Special Weather Statement | TFX | 39 min |
| Aug 3, 10:51 PM MDT | Special Weather Statement | TFX | 39 min |
| Aug 5, 5:45 AM MDT | Dense Fog Advisory | TFX | 4 hr |
| Aug 6, 2:15 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 6, 5:01 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 6, 8:23 PM MDT | Severe Thunderstorm Warning | TFX | 52 min |
| Aug 6, 8:56 PM MDT | Mesoscale Discussion | SPC | 64 min |
| Aug 6, 9:02 PM MDT | Severe Thunderstorm Warning | TFX | 43 min |
| Aug 12, 3:40 PM MDT | Special Weather Statement | TFX | 35 min |
| Aug 12, 4:13 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 12, 4:18 PM MDT | Special Weather Statement | TFX | 42 min |
| Aug 12, 4:47 PM MDT | Severe Thunderstorm Warning | TFX | 28 min |
| Aug 12, 4:56 PM MDT | Special Weather Statement | TFX | 64 min |
| Aug 12, 5:15 PM MDT | Severe Thunderstorm Warning | TFX | 30 min |
| Aug 12, 5:38 PM MDT | Special Weather Statement | TFX | 37 min |
| Aug 18, 7:16 PM MDT | Severe Thunderstorm Warning | TFX | 44 min |
| Aug 18, 8:00 PM MDT | Severe Thunderstorm Warning | TFX | 45 min |
| Aug 18, 8:38 PM MDT | Special Weather Statement | TFX | 37 min |
| Aug 18, 8:41 PM MDT | Severe Thunderstorm Warning | TFX | 34 min |
| Aug 18, 9:16 PM MDT | Special Weather Statement | TFX | 44 min |
| Aug 18, 10:07 PM MDT | Special Weather Statement | TFX | 53 min |
| Aug 18, 11:02 PM MDT | Special Weather Statement | TFX | 43 min |
| Aug 19, 2:21 PM MDT | Mesoscale Discussion | SPC | 84 min |
| Aug 19, 2:48 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 19, 6:27 PM MDT | Severe Thunderstorm Warning | TFX | 33 min |
| Aug 19, 6:55 PM MDT | Severe Thunderstorm Warning | TFX | 50 min |
| Aug 19, 7:13 PM MDT | Severe Thunderstorm Warning | TFX | 47 min |
| Aug 19, 7:39 PM MDT | Severe Thunderstorm Warning | TFX | 51 min |
| Aug 19, 7:49 PM MDT | Severe Thunderstorm Warning | TFX | 41 min |
| Aug 19, 8:09 PM MDT | Severe Thunderstorm Warning | TFX | 51 min |
| Aug 19, 8:31 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Aug 19, 8:35 PM MDT | Severe Thunderstorm Warning | TFX | 25 min |
| Aug 19, 8:56 PM MDT | Severe Thunderstorm Warning | TFX | 64 min |
| Aug 20, 2:39 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 21, 4:58 PM MDT | Special Weather Statement | TFX | 47 min |
| Aug 21, 5:45 PM MDT | Severe Thunderstorm Warning | TFX | 45 min |
| Aug 21, 6:26 PM MDT | Special Weather Statement | TFX | 34 min |
| Aug 23, 2:13 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 23, 2:54 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 23, 4:31 PM MDT | Special Weather Statement | TFX | 29 min |
| Aug 23, 5:04 PM MDT | Mesoscale Discussion | SPC | 116 min |
| Aug 23, 5:04 PM MDT | Severe Thunderstorm Warning | TFX | 26 min |
| Aug 23, 5:18 PM MDT | Special Weather Statement | TFX | 42 min |
| Aug 23, 5:23 PM MDT | Severe Thunderstorm Warning | TFX | 67 min |
| Aug 23, 5:27 PM MDT | Severe Thunderstorm Warning | TFX | 63 min |
| Aug 23, 6:11 PM MDT | Severe Thunderstorm Warning | TFX | 64 min |
| Aug 23, 6:16 PM MDT | Severe Thunderstorm Warning | TFX | 59 min |
| Sep 11, 6:45 PM MDT | Severe Thunderstorm Warning | TFX | 30 min |
| Sep 11, 8:11 PM MDT | Special Weather Statement | TFX | 34 min |
| Sep 17, 1:41 PM MDT | Flood Watch | TFX | 29 hr |
| Sep 18, 10:45 AM MDT | Areal Flood Advisory | TFX | 8 hr |
| Sep 18, 6:20 PM MDT | Areal Flood Advisory | TFX | 16 hr |
| Sep 29, 2:03 AM MDT | High Wind Warning | TFX | 26 hr |
| Oct 2, 12:57 AM MDT | High Wind Watch | TFX | 37 hr |
| Oct 3, 1:34 PM MDT | High Wind Warning | TFX | 37 hr |
| Nov 2, 1:45 PM MDT | Winter Storm Watch | TFX | 50 hr |
| Nov 3, 1:57 PM MST | Winter Storm Warning | TFX | 63 hr |
| Nov 3, 1:57 PM MST | Winter Weather Advisory | TFX | 60 hr |
| Nov 14, 2:52 AM MST | Winter Weather Advisory | TFX | 53 hr |
| Nov 15, 12:23 PM MST | High Wind Warning | TFX | 53 hr |
| Nov 21, 2:43 AM MST | Winter Weather Advisory | TFX | 44 hr |
| Nov 21, 12:34 PM MST | Winter Storm Watch | TFX | 25 hr |
| Nov 21, 12:34 PM MST | Winter Weather Advisory | TFX | 70 hr |
| Nov 29, 4:50 AM MST | Dense Fog Advisory | TFX | 28 hr |
| Dec 4, 8:54 PM MST | Dense Fog Advisory | TFX | 14 hr |
| Dec 6, 12:35 AM MST | High Wind Warning | TFX | 64 hr |
| Dec 6, 1:08 PM MST | Winter Weather Advisory | TFX | 3 days |
| Dec 8, 1:01 AM MST | Winter Storm Warning | TFX | 34 hr |
| Dec 10, 12:33 AM MST | Winter Weather Advisory | TFX | 28 hr |
| Dec 13, 1:30 PM MST | Winter Weather Advisory | TFX | 48 hr |
| Dec 15, 1:22 PM MST | Winter Weather Advisory | TFX | 44 hr |
| Dec 16, 1:26 PM MST | High Wind Watch | TFX | 37 hr |
| Dec 17, 9:38 AM MST | High Wind Warning | TFX | 40 hr |
| Dec 25, 1:26 PM MST | Winter Weather Advisory | TFX | 5 days |
| Dec 27, 1:46 PM MST | Winter Storm Watch | TFX | 24 hr |
| Dec 28, 1:50 PM MST | Winter Storm Warning | TFX | 45 hr |
| Dec 28, 1:50 PM MST | Winter Weather Advisory | TFX | 47 hr |
| Dec 30, 1:06 PM MST | Winter Weather Advisory | TFX | 20 hr |
| Dec 31, 11:21 AM MST | Dense Fog Advisory | TFX | 45 hr |
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 | 31 |
| Severe Thunderstorm Watch | 6 |
| Mesoscale Discussion | 13 |
| Special Weather Statement | 39 |
| Flooding | |
| Flood Watch | 3 |
| Areal Flood Advisory | 3 |
| Winter | |
| Blizzard Warning | 1 |
| Snow Squall Warning | 1 |
| Winter Storm Warning | 10 |
| Winter Storm Watch | 9 |
| Winter Weather Advisory | 29 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Wind Chill Warning | 1 |
| Wind Chill Advisory | 7 |
| Wind and dust | |
| High Wind Warning | 10 |
| High Wind Watch | 7 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 8 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20232025
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.