Alert archive / Montana / Chouteau County
Weather alerts in Chouteau County, Montana, 2022
163 weather alerts in 2022, 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 2022. Tap one for its archive.
- Alerts
- 163
- Warnings
- 51
- Watches
- 20
- Advisories
- 25
- Busiest month
- July65 alerts
- Busiest day
- July 9, 202213 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, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 38 | 16 | 58% | 8 | 38% | 11 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Great Falls, MT: tornado warnings | 0 | 1 | 0% | |||
| NWS Great Falls, MT: severe thunderstorm warnings | 170 | 65 | 62% | 216 | 70% | 23 min |
| NWS Great Falls, MT: flash flood warnings | 3 | 1 | 67% | 5 | 40% | 30 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 3, 10:38 PM MST | Special Weather Statement | TFX | 82 min |
| Jan 4, 12:42 AM MST | Special Weather Statement | TFX | 33 min |
| Jan 4, 1:17 AM MST | Special Weather Statement | TFX | 28 min |
| Jan 4, 1:59 AM MST | Special Weather Statement | TFX | 61 min |
| Feb 11, 9:35 AM MST | Mesoscale Discussion | SPC | 4 hr |
| Feb 22, 6:25 AM MST | Special Weather Statement | TFX | 80 min |
| Mar 7, 2:49 PM MST | Mesoscale Discussion | SPC | 4 hr |
| May 5, 7:22 PM MDT | Special Weather Statement | TFX | 53 min |
| May 5, 8:49 PM MDT | Severe Thunderstorm Warning | TFX | 26 min |
| May 5, 9:18 PM MDT | Special Weather Statement | TFX | 57 min |
| May 7, 2:59 PM MDT | Special Weather Statement | TFX | 31 min |
| May 7, 4:13 PM MDT | Special Weather Statement | TFX | 32 min |
| Jun 4, 6:43 PM MDT | Special Weather Statement | TFX | 32 min |
| Jun 6, 6:10 PM MDT | Special Weather Statement | TFX | 50 min |
| Jun 18, 12:37 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 18, 2:29 PM MDT | Mesoscale Discussion | SPC | 91 min |
| Jun 18, 2:59 PM MDT | Severe Thunderstorm Warning | TFX | 46 min |
| Jun 18, 3:28 PM MDT | Severe Thunderstorm Warning | TFX | 47 min |
| Jun 18, 3:56 PM MDT | Severe Thunderstorm Warning | TFX | 49 min |
| Jun 18, 8:03 PM MDT | Special Weather Statement | TFX | 27 min |
| Jun 23, 4:09 PM MDT | Special Weather Statement | TFX | 51 min |
| Jun 28, 2:20 PM MDT | Mesoscale Discussion | SPC | 85 min |
| Jun 28, 3:45 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 28, 6:16 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Jun 28, 7:09 PM MDT | Special Weather Statement | TFX | 36 min |
| Jul 2, 3:43 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 2, 8:25 PM MDT | Severe Thunderstorm Warning | TFX | 35 min |
| Jul 2, 9:03 PM MDT | Special Weather Statement | TFX | 27 min |
| Jul 4, 3:07 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 4, 5:45 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 4, 7:37 PM MDT | Special Weather Statement | TFX | 38 min |
| Jul 4, 8:28 PM MDT | Special Weather Statement | TFX | 47 min |
| Jul 6, 1:42 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 6, 2:34 PM MDT | Special Weather Statement | TFX | 26 min |
| Jul 6, 2:48 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 6, 4:13 PM MDT | Special Weather Statement | TFX | 47 min |
| Jul 6, 4:21 PM MDT | Severe Thunderstorm Warning | TFX | 22 min |
| Jul 6, 4:27 PM MDT | Severe Thunderstorm Warning | TFX | 48 min |
| Jul 6, 4:53 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 6, 7:01 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Jul 6, 7:13 PM MDT | Severe Thunderstorm Warning | TFX | 62 min |
| Jul 6, 7:20 PM MDT | Special Weather Statement | TFX | 55 min |
| Jul 6, 7:55 PM MDT | Special Weather Statement | TFX | 50 min |
| Jul 7, 1:41 PM MDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jul 7, 4:51 PM MDT | Severe Thunderstorm Warning | TFX | 54 min |
| Jul 7, 5:35 PM MDT | Severe Thunderstorm Warning | TFX | 55 min |
| Jul 7, 6:12 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 7, 6:22 PM MDT | Severe Thunderstorm Warning | TFX | 53 min |
| Jul 7, 7:08 PM MDT | Severe Thunderstorm Warning | TFX | 31 min |
| Jul 7, 7:40 PM MDT | Special Weather Statement | TFX | 35 min |
| Jul 7, 8:13 PM MDT | Severe Thunderstorm Warning | TFX | 45 min |
| Jul 7, 8:49 PM MDT | Severe Thunderstorm Warning | TFX | 25 min |
| Jul 7, 9:09 PM MDT | Severe Thunderstorm Warning | TFX | 51 min |
| Jul 7, 9:26 PM MDT | Special Weather Statement | TFX | 34 min |
| Jul 8, 2:41 PM MDT | Mesoscale Discussion | SPC | 94 min |
| Jul 8, 3:09 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 8, 6:13 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 8, 6:13 PM MDT | Severe Thunderstorm Warning | TFX | 47 min |
| Jul 8, 6:44 PM MDT | Special Weather Statement | TFX | 31 min |
| Jul 8, 6:49 PM MDT | Severe Thunderstorm Warning | TFX | 26 min |
| Jul 8, 6:56 PM MDT | Severe Thunderstorm Warning | TFX | 49 min |
| Jul 8, 7:03 PM MDT | Severe Thunderstorm Warning | TFX | 27 min |
| Jul 8, 7:08 PM MDT | Severe Thunderstorm Warning | TFX | 31 min |
| Jul 8, 7:23 PM MDT | Severe Thunderstorm Warning | TFX | 37 min |
| Jul 8, 7:32 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Jul 8, 7:54 PM MDT | Severe Thunderstorm Warning | TFX | 51 min |
| Jul 9, 2:59 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 9, 5:43 PM MDT | Severe Thunderstorm Warning | TFX | 46 min |
| Jul 9, 5:46 PM MDT | Severe Thunderstorm Warning | TFX | 59 min |
| Jul 9, 6:12 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 9, 6:31 PM MDT | Severe Thunderstorm Warning | TFX | 59 min |
| Jul 9, 6:35 PM MDT | Severe Thunderstorm Warning | TFX | 55 min |
| Jul 9, 6:58 PM MDT | Severe Thunderstorm Warning | TFX | 77 min |
| Jul 9, 7:06 PM MDT | Severe Thunderstorm Warning | TFX | 54 min |
| Jul 13, 1:44 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 13, 2:26 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 15, 11:21 AM MDT | Mesoscale Discussion | SPC | 114 min |
| Jul 15, 12:13 PM MDT | Severe Thunderstorm Warning | TFX | 62 min |
| Jul 15, 12:31 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 15, 12:54 PM MDT | Severe Thunderstorm Warning | TFX | 66 min |
| Jul 15, 1:12 PM MDT | Severe Thunderstorm Warning | TFX | 63 min |
| Jul 15, 2:12 PM MDT | Severe Thunderstorm Warning | TFX | 20 min |
| Jul 15, 5:02 PM MDT | Mesoscale Discussion | SPC | 88 min |
| Jul 16, 10:13 PM MDT | Special Weather Statement | TFX | 62 min |
| Jul 17, 11:14 PM MDT | Special Weather Statement | TFX | 61 min |
| Jul 18, 12:08 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 18, 12:44 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 18, 2:38 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 31, 2:27 AM MDT | Fire Weather Watch | TFX | 13 hr |
| Jul 31, 3:05 PM MDT | Red Flag Warning | TFX | 4 days |
| Aug 1, 8:40 PM MDT | Special Weather Statement | TFX | 65 min |
| Aug 4, 3:41 PM MDT | Severe Thunderstorm Warning | TFX | 34 min |
| Aug 12, 4:41 PM MDT | Mesoscale Discussion | SPC | 94 min |
| Aug 12, 6:37 PM MDT | Mesoscale Discussion | SPC | 83 min |
| Aug 12, 7:42 PM MDT | Special Weather Statement | TFX | 33 min |
| Aug 12, 8:12 PM MDT | Special Weather Statement | TFX | 33 min |
| Aug 12, 8:43 PM MDT | Special Weather Statement | TFX | 47 min |
| Aug 13, 6:17 PM MDT | Special Weather Statement | TFX | 28 min |
| Aug 22, 9:56 PM MDT | Special Weather Statement | TFX | 34 min |
| Aug 24, 3:18 AM MDT | Special Weather Statement | TFX | 42 min |
| Aug 31, 7:06 PM MDT | Fire Weather Watch | TFX | 8 hr |
| Sep 1, 2:42 AM MDT | Red Flag Warning | TFX | 19 hr |
| Sep 1, 1:07 PM MDT | Fire Weather Watch | TFX | 24 hr |
| Sep 2, 1:00 PM MDT | Red Flag Warning | TFX | 3 days |
| Sep 3, 10:37 PM MDT | Special Weather Statement | TFX | 23 min |
| Sep 3, 11:00 PM MDT | Special Weather Statement | TFX | 60 min |
| Sep 4, 12:28 AM MDT | Special Weather Statement | TFX | 47 min |
| Sep 4, 12:57 AM MDT | Severe Thunderstorm Warning | TFX | 63 min |
| Sep 4, 1:35 AM MDT | Special Weather Statement | TFX | 40 min |
| Sep 4, 1:57 AM MDT | Special Weather Statement | TFX | 63 min |
| Sep 4, 2:02 AM MDT | Severe Thunderstorm Warning | TFX | 58 min |
| Sep 4, 2:53 AM MDT | Severe Thunderstorm Warning | TFX | 82 min |
| Sep 5, 2:28 AM MDT | Fire Weather Watch | TFX | 25 hr |
| Sep 6, 3:26 AM MDT | Red Flag Warning | TFX | 45 hr |
| Sep 7, 5:57 PM MDT | Severe Thunderstorm Warning | TFX | 33 min |
| Sep 7, 6:32 PM MDT | Severe Thunderstorm Warning | TFX | 28 min |
| Sep 18, 9:47 PM MDT | Special Weather Statement | TFX | 43 min |
| Sep 18, 9:51 PM MDT | Special Weather Statement | TFX | 39 min |
| Sep 18, 10:24 PM MDT | Special Weather Statement | TFX | 36 min |
| Sep 18, 10:59 PM MDT | Special Weather Statement | TFX | 31 min |
| Sep 18, 11:29 PM MDT | Special Weather Statement | TFX | 61 min |
| Sep 19, 5:52 PM MDT | Special Weather Statement | TFX | 53 min |
| Oct 18, 1:57 PM MDT | Fire Weather Watch | TFX | 25 hr |
| Oct 19, 2:39 PM MDT | Red Flag Warning | TFX | 28 hr |
| Oct 20, 3:33 AM MDT | Winter Storm Watch | TFX | 35 hr |
| Oct 21, 2:32 AM MDT | Winter Storm Warning | TFX | 69 hr |
| Oct 21, 2:40 PM MDT | Winter Weather Advisory | TFX | 57 hr |
| Nov 3, 2:34 AM MDT | High Wind Watch | TFX | 34 hr |
| Nov 3, 2:46 PM MDT | High Wind Warning | TFX | 54 hr |
| Nov 5, 7:10 AM MDT | Special Weather Statement | TFX | 65 min |
| Nov 6, 2:13 PM MST | Winter Weather Advisory | TFX | 4 days |
| Nov 13, 1:19 AM MST | Winter Weather Advisory | TFX | 43 hr |
| Nov 15, 1:11 AM MST | Winter Weather Advisory | TFX | 59 hr |
| Nov 17, 1:14 AM MST | Wind Chill Advisory | TFX | 32 hr |
| Nov 18, 1:57 AM MST | Winter Weather Advisory | TFX | 16 hr |
| Nov 22, 1:35 PM MST | Winter Weather Advisory | TFX | 27 hr |
| Nov 25, 3:24 AM MST | Winter Weather Advisory | TFX | 34 hr |
| Nov 25, 2:56 PM MST | Winter Weather Advisory | TFX | 66 hr |
| Nov 25, 10:28 PM MST | High Wind Watch | TFX | 16 hr |
| Nov 26, 2:35 PM MST | High Wind Warning | TFX | 23 hr |
| Nov 28, 12:40 AM MST | Snow Squall Warning | TFX | 65 min |
| Nov 29, 2:38 AM MST | Winter Storm Watch | TFX | 23 hr |
| Nov 29, 1:34 PM MST | Winter Storm Warning | TFX | 65 hr |
| Nov 30, 1:40 AM MST | Winter Weather Advisory | TFX | 50 hr |
| Dec 1, 7:42 AM MST | Wind Chill Advisory | TFX | 49 hr |
| Dec 3, 2:46 PM MST | Winter Weather Advisory | TFX | 45 hr |
| Dec 4, 2:10 PM MST | Winter Weather Advisory | TFX | 57 hr |
| Dec 6, 2:23 PM MST | Wind Chill Advisory | TFX | 21 hr |
| Dec 6, 2:23 PM MST | Winter Weather Advisory | TFX | 27 hr |
| Dec 10, 1:41 PM MST | Winter Weather Advisory | TFX | 57 hr |
| Dec 13, 2:02 PM MST | Winter Weather Advisory | TFX | 36 hr |
| Dec 16, 3:20 AM MST | Wind Chill Advisory | TFX | 3 days |
| Dec 17, 1:52 AM MST | Winter Weather Advisory | TFX | 58 hr |
| Dec 18, 2:05 AM MST | Wind Chill Watch | TFX | 12 hr |
| Dec 18, 2:28 PM MST | Wind Chill Warning | TFX | 5 days |
| Dec 19, 2:39 PM MST | Winter Storm Warning | TFX | 44 hr |
| Dec 19, 2:39 PM MST | Winter Weather Advisory | TFX | 44 hr |
| Dec 21, 10:03 PM MST | Winter Weather Advisory | TFX | 19 hr |
| Dec 22, 2:08 AM MST | Wind Chill Advisory | TFX | 54 hr |
| Dec 23, 10:39 AM MST | Winter Weather Advisory | TFX | 25 hr |
| Dec 23, 2:41 PM MST | Winter Weather Advisory | TFX | 50 hr |
| Dec 24, 1:40 PM MST | High Wind Warning | TFX | 19 hr |
| Dec 28, 12:43 AM MST | Winter Weather Advisory | TFX | 27 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20212023
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.