Alert archive / Montana / Ravalli County
Weather alerts in Ravalli County, Montana, 2022
152 weather alerts in 2022, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Ravalli County and its neighbors
Each county as a circle sized by its count in 2022. Tap one for its archive.
- Alerts
- 152
- Warnings
- 34
- Watches
- 15
- Advisories
- 60
- Busiest month
- July34 alerts
- Busiest day
- July 9, 202210 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Ravalli County, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 12 | 7 | 42% | 13 | 92% | 17 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 Missoula, MT: severe thunderstorm warnings | 76 | 39 | 49% | 90 | 74% | 16 min |
| NWS Missoula, MT: flash flood warnings | 0 | 3 | 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 2, 11:07 AM MST | Winter Weather Advisory | MSO | 48 hr |
| Jan 3, 9:23 PM MST | Special Weather Statement | MSO | 52 min |
| Jan 4, 7:00 AM MST | Special Weather Statement | MSO | 60 min |
| Jan 4, 12:34 PM MST | Winter Storm Watch | MSO | 26 hr |
| Jan 4, 12:34 PM MST | Winter Weather Advisory | MSO | 4 days |
| Jan 5, 2:14 PM MST | Winter Storm Warning | MSO | 65 hr |
| Jan 7, 10:58 AM MST | Winter Weather Advisory | MSO | 24 hr |
| Jan 9, 1:03 PM MST | Air Stagnation Advisory | MSO | 5 days |
| Jan 11, 2:56 PM MST | Winter Weather Advisory | MSO | 21 hr |
| Jan 12, 7:20 AM MST | Winter Storm Warning | MSO | 5 hr |
| Jan 13, 3:25 AM MST | Freezing Fog Advisory | MSO | 9 hr |
| Jan 15, 4:38 AM MST | Dense Fog Advisory | MSO | 5 hr |
| Jan 15, 10:01 AM MST | Dense Fog Advisory | MSO | 3 hr |
| Jan 23, 9:10 AM MST | Dense Fog Advisory | MSO | 6 hr |
| Jan 24, 11:12 AM MST | Winter Weather Advisory | MSO | 9 hr |
| Jan 25, 6:08 AM MST | Dense Fog Advisory | MSO | 4 hr |
| Jan 25, 1:18 PM MST | Air Stagnation Advisory | MSO | 5 days |
| Jan 30, 3:31 AM MST | Winter Weather Advisory | MSO | 71 hr |
| Feb 1, 6:05 AM MST | Winter Weather Advisory | MSO | 21 hr |
| Feb 1, 10:21 AM MST | Wind Chill Advisory | MSO | 26 hr |
| Feb 14, 2:50 AM MST | Winter Weather Advisory | MSO | 32 hr |
| Feb 15, 12:19 PM MST | Winter Weather Advisory | MSO | 24 hr |
| Feb 16, 7:17 PM MST | Special Weather Statement | MSO | 58 min |
| Feb 18, 12:54 PM MST | Winter Storm Watch | MSO | 41 hr |
| Feb 19, 11:33 AM MST | Winter Weather Advisory | MSO | 53 hr |
| Feb 21, 5:11 AM MST | Wind Chill Advisory | MSO | 51 hr |
| Feb 26, 2:13 PM MST | Winter Weather Advisory | MSO | 69 hr |
| Mar 1, 2:23 PM MST | Winter Weather Advisory | MSO | 21 hr |
| Mar 4, 2:41 PM MST | Winter Weather Advisory | MSO | 18 hr |
| Mar 7, 11:25 AM MST | Winter Weather Advisory | MSO | 37 hr |
| Mar 8, 1:16 PM MST | Wind Chill Advisory | MSO | 22 hr |
| Apr 3, 1:18 AM MDT | High Wind Watch | MSO | 26 hr |
| Apr 3, 3:07 PM MDT | Winter Weather Advisory | MSO | 57 hr |
| Apr 4, 3:01 AM MDT | High Wind Warning | MSO | 25 hr |
| Apr 4, 4:46 PM MDT | Snow Squall Warning | MSO | 29 min |
| Apr 5, 3:43 AM MDT | Wind Advisory | MSO | 17 hr |
| Apr 9, 2:28 PM MDT | Winter Storm Watch | MSO | 35 hr |
| Apr 10, 2:26 PM MDT | High Wind Warning | MSO | 43 hr |
| Apr 10, 2:44 PM MDT | Winter Storm Warning | MSO | 45 hr |
| Apr 10, 2:44 PM MDT | Winter Weather Advisory | MSO | 42 hr |
| Apr 28, 2:50 AM MDT | Winter Weather Advisory | MSO | 30 hr |
| May 6, 12:49 PM MDT | Winter Weather Advisory | MSO | 21 hr |
| May 15, 10:29 PM MDT | Special Weather Statement | MSO | 46 min |
| May 18, 12:46 PM MDT | Wind Advisory | MSO | 26 hr |
| May 19, 10:31 AM MDT | Winter Weather Advisory | MSO | 22 hr |
| May 27, 7:26 PM MDT | Special Weather Statement | MSO | 49 min |
| Jun 4, 8:34 AM MDT | Areal Flood Advisory | MSO | 3 days |
| Jun 9, 10:08 AM MDT | Flood Watch | MSO | 4 days |
| Jun 11, 9:36 PM MDT | River Flood Warning | MSO | 40 hr |
| Jun 18, 11:35 AM MDT | Mesoscale Discussion | SPC | 55 min |
| Jun 18, 12:24 PM MDT | Special Weather Statement | MSO | 51 min |
| Jun 18, 12:37 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 18, 1:13 PM MDT | Severe Thunderstorm Warning | MSO | 32 min |
| Jun 18, 2:29 PM MDT | Mesoscale Discussion | SPC | 91 min |
| Jul 2, 3:43 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 3, 1:42 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 3, 2:19 PM MDT | Special Weather Statement | MSO | 41 min |
| Jul 3, 2:39 PM MDT | Severe Thunderstorm Warning | MSO | 36 min |
| Jul 3, 3:14 PM MDT | Severe Thunderstorm Warning | MSO | 31 min |
| Jul 6, 3:21 PM MDT | Special Weather Statement | MSO | 24 min |
| Jul 6, 3:45 PM MDT | Special Weather Statement | MSO | 30 min |
| Jul 6, 4:00 PM MDT | Special Weather Statement | MSO | 30 min |
| Jul 6, 4:30 PM MDT | Special Weather Statement | MSO | 30 min |
| Jul 7, 1:08 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 7, 6:22 PM MDT | Special Weather Statement | MSO | 38 min |
| Jul 7, 6:57 PM MDT | Severe Thunderstorm Warning | MSO | 33 min |
| Jul 7, 7:16 PM MDT | Severe Thunderstorm Warning | MSO | 44 min |
| Jul 8, 2:34 PM MDT | Special Weather Statement | MSO | 26 min |
| Jul 8, 2:41 PM MDT | Mesoscale Discussion | SPC | 94 min |
| Jul 8, 2:49 PM MDT | Severe Thunderstorm Warning | MSO | 26 min |
| Jul 8, 2:50 PM MDT | Special Weather Statement | MSO | 40 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, 7:07 PM MDT | Severe Thunderstorm Warning | MSO | 23 min |
| Jul 8, 7:21 PM MDT | Severe Thunderstorm Warning | MSO | 39 min |
| Jul 8, 8:23 PM MDT | Severe Thunderstorm Warning | MSO | 37 min |
| Jul 9, 2:25 PM MDT | Special Weather Statement | MSO | 35 min |
| Jul 9, 2:37 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Jul 9, 2:47 PM MDT | Severe Thunderstorm Warning | MSO | 31 min |
| Jul 9, 2:59 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 9, 3:36 PM MDT | Severe Thunderstorm Warning | MSO | 39 min |
| Jul 9, 3:55 PM MDT | Special Weather Statement | TFX | 35 min |
| Jul 9, 7:43 PM MDT | Special Weather Statement | MSO | 17 min |
| Jul 9, 7:49 PM MDT | Severe Thunderstorm Warning | MSO | 26 min |
| Jul 13, 4:16 PM MDT | Special Weather Statement | TFX | 44 min |
| Jul 17, 1:29 PM MDT | Wind Advisory | MSO | 31 hr |
| Jul 25, 2:38 PM MDT | Heat Advisory | MSO | 7 days |
| Jul 30, 1:05 PM MDT | Red Flag Warning | MSO | 32 hr |
| Aug 3, 1:13 PM MDT | Red Flag Warning | MSO | 32 hr |
| Aug 12, 1:55 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 12, 3:04 PM MDT | Special Weather Statement | MSO | 26 min |
| Aug 12, 4:41 PM MDT | Mesoscale Discussion | SPC | 94 min |
| Aug 13, 7:16 AM MDT | Special Weather Statement | MSO | 44 min |
| Aug 13, 8:01 AM MDT | Special Weather Statement | MSO | 59 min |
| Aug 22, 1:35 PM MDT | Special Weather Statement | MSO | 25 min |
| Aug 24, 1:32 AM MDT | Flood Watch | MSO | 43 hr |
| Aug 24, 2:54 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 24, 5:39 PM MDT | Special Weather Statement | MSO | 51 min |
| Aug 25, 1:41 AM MDT | Special Weather Statement | MSO | 49 min |
| Sep 1, 1:50 PM MDT | Fire Weather Watch | MSO | 23 hr |
| Sep 2, 1:14 PM MDT | Red Flag Warning | MSO | 52 hr |
| Sep 5, 1:53 PM MDT | Fire Weather Watch | MSO | 13 hr |
| Sep 6, 3:08 AM MDT | Red Flag Warning | MSO | 42 hr |
| Sep 7, 3:10 PM MDT | Special Weather Statement | MSO | 35 min |
| Sep 7, 5:04 PM MDT | Special Weather Statement | MSO | 56 min |
| Sep 9, 12:18 PM MDT | Frost Advisory | MSO | 20 hr |
| Sep 14, 3:06 AM MDT | Dense Fog Advisory | MSO | 9 hr |
| Sep 16, 1:33 PM MDT | Special Weather Statement | MSO | 27 min |
| Sep 18, 5:18 PM MDT | Special Weather Statement | MSO | 42 min |
| Sep 29, 2:18 PM MDT | Special Weather Statement | MSO | 27 min |
| Oct 16, 1:41 PM MDT | Air Stagnation Advisory | MSO | 37 min |
| Oct 16, 1:42 PM MDT | Air Stagnation Advisory | MSO | 4 days |
| Oct 20, 3:14 PM MDT | Winter Storm Watch | MSO | 23 hr |
| Oct 21, 2:30 PM MDT | Winter Storm Warning | MSO | 58 hr |
| Oct 23, 2:44 PM MDT | Winter Weather Advisory | MSO | 45 hr |
| Oct 25, 1:31 PM MDT | Winter Weather Advisory | MSO | 22 hr |
| Nov 1, 2:15 PM MDT | Winter Weather Advisory | MSO | 31 hr |
| Nov 3, 12:07 PM MDT | High Wind Watch | MSO | 20 hr |
| Nov 3, 12:09 PM MDT | Winter Storm Warning | MSO | 48 hr |
| Nov 4, 8:31 AM MDT | High Wind Warning | MSO | 30 hr |
| Nov 5, 2:41 PM MDT | Winter Weather Advisory | MSO | 18 hr |
| Nov 5, 7:27 PM MDT | Special Weather Statement | MSO | 48 min |
| Nov 5, 8:18 PM MDT | Special Weather Statement | MSO | 42 min |
| Nov 6, 3:06 PM MST | Winter Weather Advisory | MSO | 43 hr |
| Nov 7, 10:21 AM MST | Special Weather Statement | MSO | 24 min |
| Nov 7, 12:55 PM MST | Snow Squall Warning | MSO | 35 min |
| Nov 8, 1:15 PM MST | Winter Storm Warning | MSO | 29 hr |
| Nov 8, 1:15 PM MST | Winter Weather Advisory | MSO | 40 hr |
| Nov 12, 4:47 PM MST | Air Stagnation Advisory | MSO | 4 days |
| Nov 15, 12:31 PM MST | Winter Weather Advisory | MSO | 47 hr |
| Nov 18, 1:16 PM MST | Air Stagnation Advisory | MSO | 5 days |
| Nov 22, 2:35 AM MST | Winter Weather Advisory | MSO | 32 hr |
| Nov 24, 1:47 PM MST | Winter Weather Advisory | MSO | 42 hr |
| Nov 26, 12:36 PM MST | Winter Weather Advisory | MSO | 44 hr |
| Nov 27, 4:17 PM MST | Snow Squall Warning | MSO | 58 min |
| Nov 28, 10:44 AM MST | Winter Weather Advisory | MSO | 23 hr |
| Nov 29, 2:15 PM MST | Winter Weather Advisory | MSO | 64 hr |
| Dec 1, 10:43 AM MST | Snow Squall Warning | MSO | 47 min |
| Dec 1, 11:01 AM MST | Special Weather Statement | TFX | 44 min |
| Dec 3, 2:36 PM MST | Winter Weather Advisory | MSO | 46 hr |
| Dec 4, 2:13 PM MST | Winter Storm Warning | MSO | 17 hr |
| Dec 5, 7:03 AM MST | Winter Weather Advisory | MSO | 6 hr |
| Dec 10, 1:24 PM MST | Winter Weather Advisory | MSO | 49 hr |
| Dec 13, 2:48 PM MST | Winter Weather Advisory | MSO | 36 hr |
| Dec 16, 1:28 PM MST | Winter Weather Advisory | MSO | 71 hr |
| Dec 18, 11:18 AM MST | Winter Storm Watch | MSO | 45 hr |
| Dec 19, 12:52 PM MST | Winter Storm Warning | MSO | 46 hr |
| Dec 21, 8:44 AM MST | Wind Chill Warning | MSO | 27 hr |
| Dec 22, 2:44 PM MST | Winter Weather Advisory | MSO | 3 days |
| Dec 22, 6:19 PM MST | Wind Chill Advisory | MSO | 17 hr |
| Dec 24, 4:13 AM MST | Winter Storm Warning | MSO | 32 hr |
| Dec 27, 11:54 AM MST | Winter Weather Advisory | MSO | 26 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.