Alert archive / Idaho / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Idaho, 2021
38 severe thunderstorm warnings in 2021. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of severe thunderstorm warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Severe Thunderstorm Warnings
- 38
- Busiest month
- July9 severe thunderstorm warnings
- Busiest day
- October 7, 20214 severe thunderstorm warnings
Over time
By month
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 | Counties | Lasted |
|---|---|---|---|---|
| May 1, 3:13 PM MDT | Severe Thunderstorm Warning | BOI | Ada, Boise, Canyon, Elmore, Owyhee | 47 min |
| May 16, 6:54 PM MDT | Severe Thunderstorm Warning | PIH | Bannock, Bingham, Blaine, Cassia, Lincoln, Minidoka and 1 more | 66 min |
| Jun 4, 3:40 PM MDT | Severe Thunderstorm Warning | PIH | Cassia | 22 min |
| Jun 4, 3:59 PM MDT | Severe Thunderstorm Warning | PIH | Clark | 46 min |
| Jun 4, 4:38 PM MDT | Severe Thunderstorm Warning | PIH | Cassia | 52 min |
| Jun 15, 4:00 AM MDT | Severe Thunderstorm Warning | OTX | Bonner | 30 min |
| Jun 22, 6:08 PM MDT | Severe Thunderstorm Warning | BOI | Owyhee | 36 min |
| Jun 22, 6:40 PM MDT | Severe Thunderstorm Warning | BOI | Ada, Canyon, Owyhee | 50 min |
| Jun 23, 5:18 PM MDT | Severe Thunderstorm Warning | BOI | Elmore, Owyhee | 42 min |
| Jun 29, 7:43 PM MDT | Severe Thunderstorm Warning | PIH | Bingham, Bonneville | 33 min |
| Jul 4, 6:39 PM MDT | Severe Thunderstorm Warning | BOI | Ada, Elmore, Owyhee | 36 min |
| Jul 5, 5:40 PM MDT | Severe Thunderstorm Warning | PIH | Bingham | 35 min |
| Jul 7, 1:30 PM MDT | Severe Thunderstorm Warning | MSO | Lemhi | 30 min |
| Jul 13, 5:56 PM MDT | Severe Thunderstorm Warning | PIH | Fremont, Teton | 28 min |
| Jul 15, 3:44 PM MDT | Severe Thunderstorm Warning | PIH | Bonneville | 31 min |
| Jul 15, 6:44 PM MDT | Severe Thunderstorm Warning | PIH | Clark, Fremont, Jefferson, Madison | 46 min |
| Jul 17, 3:42 PM MDT | Severe Thunderstorm Warning | PIH | Bannock, Bingham, Power | 48 min |
| Jul 20, 2:53 PM MDT | Severe Thunderstorm Warning | PIH | Caribou | 37 min |
| Jul 22, 2:37 PM MDT | Severe Thunderstorm Warning | PIH | Cassia, Oneida, Power | 38 min |
| Aug 2, 6:54 PM MDT | Severe Thunderstorm Warning | PIH | Bannock, Bingham, Power | 36 min |
| Aug 5, 6:38 PM MDT | Severe Thunderstorm Warning | PIH | Bannock, Bingham, Bonneville, Butte, Clark, Custer and 1 more | 37 min |
| Aug 21, 3:05 PM MDT | Severe Thunderstorm Warning | PIH | Bannock, Bear Lake, Caribou, Franklin | 29 min |
| Aug 21, 4:44 PM MDT | Severe Thunderstorm Warning | MSO | Lemhi | 31 min |
| Aug 21, 6:57 PM MDT | Severe Thunderstorm Warning | BOI | Owyhee | 48 min |
| Aug 21, 8:42 PM MDT | Severe Thunderstorm Warning | BOI | Elmore, Owyhee | 24 min |
| Aug 21, 8:52 PM MDT | Severe Thunderstorm Warning | BOI | Elmore | 13 min |
| Sep 2, 8:20 PM MDT | Severe Thunderstorm Warning | PIH | Caribou | 25 min |
| Sep 2, 8:43 PM MDT | Severe Thunderstorm Warning | PIH | Caribou | 32 min |
| Sep 10, 4:00 PM MDT | Severe Thunderstorm Warning | PIH | Butte, Clark, Fremont, Jefferson, Madison | 30 min |
| Sep 10, 4:23 PM MDT | Severe Thunderstorm Warning | PIH | Power | 24 min |
| Sep 10, 4:28 PM MDT | Severe Thunderstorm Warning | PIH | Clark, Fremont, Jefferson | 14 min |
| Sep 10, 6:39 PM MDT | Severe Thunderstorm Warning | BOI | Canyon, Owyhee, Payette | 51 min |
| Sep 10, 7:31 PM MDT | Severe Thunderstorm Warning | BOI | Ada, Canyon, Gem, Owyhee, Payette | 29 min |
| Sep 12, 6:17 PM MDT | Severe Thunderstorm Warning | PIH | Bear Lake, Caribou | 28 min |
| Oct 7, 2:35 PM MDT | Severe Thunderstorm Warning | PIH | Cassia | 25 min |
| Oct 7, 3:54 PM MDT | Severe Thunderstorm Warning | PIH | Cassia | 51 min |
| Oct 7, 4:41 PM MDT | Severe Thunderstorm Warning | PIH | Cassia, Power | 34 min |
| Oct 7, 5:14 PM MDT | Severe Thunderstorm Warning | PIH | Cassia, Power | 31 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Owyhee County9
- Cassia County8
- Power County7
- Bingham County6
- Elmore County5
- Bannock County5
- Clark County5
- Caribou County5
- Ada County4
- Canyon County4
- Fremont County4
- Jefferson County4
- Bonneville County3
- Lemhi County2
- Madison County2
- Butte County2
- Bear Lake County2
- Payette County2
- Boise County1
- Blaine County1
- Lincoln County1
- Minidoka County1
- Bonner County1
- Teton County1
- Oneida County1
- Custer County1
- Franklin County1
- Gem County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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. Rebuilt daily.