Alert archive / Idaho / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Idaho, 2024
86 severe thunderstorm warnings in 2024. 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 2024. Tap one for its archive.
- Severe Thunderstorm Warnings
- 86
- Busiest month
- August26 severe thunderstorm warnings
- Busiest day
- June 26, 202414 severe thunderstorm warnings
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
30 of 86 severe thunderstorm warnings covering Idaho in 2024 had a qualifying storm report inside them; 83 of 359 hail, wind and damage reports fell inside a warning, on average 27 minutes after it went out.
Idaho, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Severe thunderstorm warnings | 86 | 30 | 65% | 359 | 23% | 27 min |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Spokane, WA: severe thunderstorm warnings | 13 | 10 | 23% | 91 | 58% | 32 min |
| NWS Boise, ID: severe thunderstorm warnings | 45 | 9 | 80% | 46 | 39% | 24 min |
| NWS Missoula, MT: severe thunderstorm warnings | 32 | 19 | 41% | 108 | 44% | 15 min |
| NWS Pocatello, ID: severe thunderstorm warnings | 38 | 12 | 68% | 272 | 14% | 23 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 | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 5:24 PM MDT | Severe Thunderstorm Warning | BOI | Ada, Boise | 36 min |
| May 13, 4:34 PM MDT | Severe Thunderstorm Warning | PIH | Bingham, Blaine, Cassia, Minidoka, Oneida, Power | 56 min |
| May 13, 5:19 PM MDT | Severe Thunderstorm Warning | PIH | Bannock, Bingham, Blaine, Oneida, Power | 56 min |
| May 13, 6:05 PM MDT | Severe Thunderstorm Warning | PIH | Bannock, Bingham, Bonneville, Caribou, Franklin, Oneida | 70 min |
| May 28, 6:01 PM MDT | Severe Thunderstorm Warning | BOI | Canyon, Owyhee | 29 min |
| May 28, 6:02 PM MDT | Severe Thunderstorm Warning | MSO | Idaho | 28 min |
| May 28, 6:11 PM MDT | Severe Thunderstorm Warning | BOI | Ada, Boise, Gem | 49 min |
| May 28, 6:52 PM MDT | Severe Thunderstorm Warning | BOI | Canyon, Owyhee, Payette | 38 min |
| Jun 7, 6:01 PM MDT | Severe Thunderstorm Warning | PIH | Bonneville, Jefferson, Madison | 29 min |
| Jun 8, 2:26 PM MDT | Severe Thunderstorm Warning | PIH | Bannock, Caribou | 34 min |
| Jun 9, 4:52 PM MDT | Severe Thunderstorm Warning | PIH | Bannock, Bingham, Power | 23 min |
| Jun 9, 5:13 PM MDT | Severe Thunderstorm Warning | PIH | Bannock, Bingham, Power | 32 min |
| Jun 9, 5:44 PM MDT | Severe Thunderstorm Warning | PIH | Bannock, Bingham, Caribou, Power | 31 min |
| Jun 26, 1:32 PM MDT | Severe Thunderstorm Warning | BOI | Canyon, Payette | 43 min |
| Jun 26, 2:03 PM MDT | Severe Thunderstorm Warning | BOI | Canyon, Gem, Payette | 42 min |
| Jun 26, 2:33 PM MDT | Severe Thunderstorm Warning | BOI | Owyhee | 27 min |
| Jun 26, 2:35 PM MDT | Severe Thunderstorm Warning | BOI | Boise, Gem, Payette, Valley | 40 min |
| Jun 26, 2:59 PM MDT | Severe Thunderstorm Warning | BOI | Elmore, Owyhee | 46 min |
| Jun 26, 3:03 PM MDT | Severe Thunderstorm Warning | BOI | Boise, Gem, Valley | 42 min |
| Jun 26, 3:42 PM MDT | Severe Thunderstorm Warning | BOI | Boise, Valley | 48 min |
| Jun 26, 3:53 PM MDT | Severe Thunderstorm Warning | BOI | Elmore, Gooding, Owyhee, Twin Falls | 37 min |
| Jun 26, 3:59 PM MDT | Severe Thunderstorm Warning | PIH | Cassia | 31 min |
| Jun 26, 4:25 PM MDT | Severe Thunderstorm Warning | BOI | Gooding, Jerome | 65 min |
| Jun 26, 4:25 PM MDT | Severe Thunderstorm Warning | BOI | Boise | 35 min |
| Jun 26, 4:29 PM MDT | Severe Thunderstorm Warning | PIH | Cassia | 31 min |
| Jun 26, 4:35 PM MDT | Severe Thunderstorm Warning | PIH | Blaine, Lincoln | 55 min |
| Jun 26, 4:45 PM MDT | Severe Thunderstorm Warning | BOI | Camas, Elmore | 60 min |
| Jun 26, 6:56 PM MDT | Severe Thunderstorm Warning | BOI | Boise, Elmore | 64 min |
| Jun 26, 7:14 PM MDT | Severe Thunderstorm Warning | BOI | Elmore, Owyhee, Twin Falls | 61 min |
| Jun 26, 7:35 PM MDT | Severe Thunderstorm Warning | BOI | Camas, Elmore | 35 min |
| Jun 26, 7:37 PM MDT | Severe Thunderstorm Warning | BOI | Boise, Valley | 17 min |
| Jul 1, 3:00 PM MDT | Severe Thunderstorm Warning | PIH | Butte, Jefferson | 45 min |
| Jul 1, 3:43 PM MDT | Severe Thunderstorm Warning | PIH | Jefferson, Madison | 32 min |
| Jul 24, 4:32 PM MDT | Severe Thunderstorm Warning | BOI | Canyon, Gem, Payette | 43 min |
| Jul 24, 5:20 PM MDT | Severe Thunderstorm Warning | BOI | Ada, Boise, Elmore | 40 min |
| Jul 24, 5:23 PM MDT | Severe Thunderstorm Warning | BOI | Ada, Boise, Canyon, Gem, Payette, Washington | 38 min |
| Jul 25, 4:41 PM MDT | Severe Thunderstorm Warning | PIH | Cassia, Lincoln, Minidoka | 49 min |
| Jul 25, 5:30 PM MDT | Severe Thunderstorm Warning | PIH | Cassia, Minidoka, Power | 45 min |
| Jul 26, 5:08 PM MDT | Severe Thunderstorm Warning | PIH | Bonneville, Caribou | 26 min |
| Aug 4, 7:40 AM MDT | Severe Thunderstorm Warning | PIH | Bingham, Blaine, Butte, Clark, Custer | 35 min |
| Aug 4, 8:09 AM MDT | Severe Thunderstorm Warning | PIH | Bingham, Bonneville, Butte, Clark, Custer, Jefferson | 36 min |
| Aug 5, 6:22 PM MDT | Severe Thunderstorm Warning | MSO | Idaho | 23 min |
| Aug 5, 6:50 PM MDT | Severe Thunderstorm Warning | MSO | Idaho | 25 min |
| Aug 6, 5:39 PM MDT | Severe Thunderstorm Warning | MSO | Idaho | 36 min |
| Aug 10, 1:21 PM MDT | Severe Thunderstorm Warning | PIH | Bonneville | 39 min |
| Aug 12, 1:25 PM MDT | Severe Thunderstorm Warning | PIH | Clark, Fremont, Jefferson | 18 min |
| Aug 13, 12:17 PM MDT | Severe Thunderstorm Warning | PIH | Cassia, Power | 43 min |
| Aug 13, 12:51 PM MDT | Severe Thunderstorm Warning | PIH | Caribou | 39 min |
| Aug 13, 12:55 PM MDT | Severe Thunderstorm Warning | PIH | Cassia, Power | 50 min |
| Aug 13, 1:33 PM MDT | Severe Thunderstorm Warning | PIH | Bingham, Butte, Jefferson | 27 min |
| Aug 13, 1:39 PM MDT | Severe Thunderstorm Warning | PIH | Bannock, Oneida, Power | 51 min |
| Aug 13, 2:40 PM MDT | Severe Thunderstorm Warning | PIH | Bannock, Oneida, Power | 26 min |
| Aug 13, 2:56 PM MDT | Severe Thunderstorm Warning | PIH | Bingham, Bonneville, Fremont, Jefferson, Madison | 64 min |
| Aug 13, 3:31 PM MDT | Severe Thunderstorm Warning | PIH | Oneida, Power | 29 min |
| Aug 15, 4:25 PM MDT | Severe Thunderstorm Warning | PIH | Bannock, Bingham, Blaine, Bonneville, Butte, Caribou and 3 more | 50 min |
| Aug 15, 6:27 PM MDT | Severe Thunderstorm Warning | PIH | Clark, Fremont, Jefferson, Madison, Teton | 48 min |
| Aug 18, 4:16 PM MDT | Severe Thunderstorm Warning | MSO | Lemhi | 29 min |
| Aug 18, 4:39 PM MDT | Severe Thunderstorm Warning | BOI | Jerome | 23 min |
| Aug 18, 4:43 PM MDT | Severe Thunderstorm Warning | PIH | Lincoln | 32 min |
| Aug 18, 4:52 PM MDT | Severe Thunderstorm Warning | BOI | Jerome | 23 min |
| Aug 18, 7:41 PM MDT | Severe Thunderstorm Warning | PIH | Bannock, Oneida, Power | 34 min |
| Aug 18, 8:06 PM MDT | Severe Thunderstorm Warning | PIH | Bannock, Caribou | 24 min |
| Aug 19, 6:30 PM MDT | Severe Thunderstorm Warning | PIH | Cassia, Power | 45 min |
| Aug 23, 2:05 PM MDT | Severe Thunderstorm Warning | PIH | Clark | 25 min |
| Aug 23, 3:17 PM MDT | Severe Thunderstorm Warning | MSO | Idaho | 28 min |
| Sep 2, 6:49 PM MDT | Severe Thunderstorm Warning | BOI | Boise, Elmore, Gem, Valley | 26 min |
| Sep 2, 7:14 PM MDT | Severe Thunderstorm Warning | BOI | Boise, Elmore | 46 min |
| Sep 2, 7:39 PM MDT | Severe Thunderstorm Warning | BOI | Adams, Gem, Valley, Washington | 36 min |
| Sep 2, 7:52 PM MDT | Severe Thunderstorm Warning | BOI | Elmore, Owyhee | 38 min |
| Sep 2, 7:58 PM MDT | Severe Thunderstorm Warning | BOI | Boise, Elmore | 32 min |
| Sep 2, 8:14 PM MDT | Severe Thunderstorm Warning | PIH | Blaine, Custer | 31 min |
| Sep 2, 8:15 PM MDT | Severe Thunderstorm Warning | BOI | Adams, Valley, Washington | 45 min |
| Sep 2, 8:30 PM MDT | Severe Thunderstorm Warning | BOI | Camas, Elmore, Gooding, Owyhee | 45 min |
| Sep 11, 4:40 PM MDT | Severe Thunderstorm Warning | PIH | Bonneville, Fremont, Madison, Teton | 35 min |
| Sep 15, 10:10 PM MDT | Severe Thunderstorm Warning | PIH | Bingham | 36 min |
| Sep 16, 4:44 PM MDT | Severe Thunderstorm Warning | BOI | Owyhee | 35 min |
| Sep 16, 8:19 PM MDT | Severe Thunderstorm Warning | BOI | Ada, Elmore | 56 min |
| Sep 25, 4:58 PM MDT | Severe Thunderstorm Warning | OTX | Latah, Lewis, Nez Perce | 62 min |
| Sep 25, 5:03 PM MDT | Severe Thunderstorm Warning | OTX | Shoshone | 40 min |
| Sep 25, 5:17 PM MDT | Severe Thunderstorm Warning | OTX | Benewah, Kootenai, Latah, Nez Perce | 58 min |
| Sep 25, 5:23 PM MDT | Severe Thunderstorm Warning | OTX | Bonner, Kootenai | 67 min |
| Sep 25, 5:51 PM MDT | Severe Thunderstorm Warning | OTX | Kootenai | 39 min |
| Sep 25, 6:09 PM MDT | Severe Thunderstorm Warning | OTX | Bonner, Boundary | 66 min |
| Sep 25, 6:13 PM MDT | Severe Thunderstorm Warning | OTX | Benewah, Bonner, Kootenai, Shoshone | 62 min |
| Sep 25, 6:17 PM MDT | Severe Thunderstorm Warning | OTX | Bonner, Kootenai, Shoshone | 58 min |
| Sep 25, 6:57 PM MDT | Severe Thunderstorm Warning | OTX | Boundary | 33 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Power County14
- Boise County13
- Elmore County13
- Bingham County12
- Bannock County11
- Cassia County9
- Owyhee County9
- Oneida County8
- Bonneville County8
- Gem County8
- Jefferson County8
- Caribou County7
- Valley County7
- Blaine County6
- Canyon County6
- Payette County6
- Ada County5
- Idaho County5
- Madison County5
- Butte County5
- Clark County5
- Kootenai County5
- Fremont County4
- Bonner County4
- Minidoka County3
- Gooding County3
- Jerome County3
- Lincoln County3
- Camas County3
- Washington County3
- Custer County3
- Shoshone County3
- Twin Falls County2
- Teton County2
- Adams County2
- Latah County2
- Nez Perce County2
- Benewah County2
- Boundary County2
- Franklin County1
2 more counties
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe 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.