National Weather ServiceIdahoSevere Thunderstorm WatchArchive to October 1, 2026
Severe Thunderstorm Watches in Idaho
The National Weather Service issued 2 severe thunderstorm watches for Idaho in 2025 and 3 a year on average in 2008-2025; in 2021-2025 it had the 43rd most of any state. 2026 through September: 4, 24% above the average of 3 for those months in 2008-2025. Lemhi was covered most often (25 times since 2008).
How many severe thunderstorm watches does Idaho get?
Every severe thunderstorm watch that covered part of Idaho. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 4 |
| 2025 | 2 |
| 2024 | 2 |
| 2023 | 3 |
| 2022 | 2 |
| 2021 | 0 |
| 2020 | 3 |
| 2019 | 3 |
| 2018 | 2 |
| 2017 | 0 |
| 2016 | 1 |
| 2015 | 5 |
| 2014 | 5 |
| 2013 | 9 |
| 2012 | 3 |
| 2011 | 3 |
| 2010 | 5 |
| 2009 | 5 |
| 2008 | 5 |
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
When in the year does Idaho get them?
Sum of 2008-2025; the busiest month is labelled.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
Where in Idaho?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Lemhi | 25 | 3 | August 19, 2024 |
| Bingham | 24 | 6 | August 23, 2026 |
| Bannock | 23 | 6 | August 23, 2026 |
| Bonneville | 23 | 5 | August 23, 2026 |
| Madison | 21 | 4 | May 13, 2026 |
| Oneida | 21 | 5 | August 23, 2026 |
| Caribou | 20 | 5 | August 23, 2026 |
| Cassia | 20 | 4 | August 23, 2026 |
| Jefferson | 20 | 3 | May 13, 2026 |
| Power | 20 | 5 | August 23, 2026 |
| Teton | 20 | 4 | May 13, 2026 |
| Bear Lake | 19 | 5 | August 23, 2026 |
The NWS issues these products for counties or forecast zones; a zone can be part of a county or a mountain range.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
What is a severe thunderstorm watch?
Severe thunderstorm watches come from the NWS Storm Prediction Center when storms with large hail or damaging winds are possible over a large area for several hours. A watch means the conditions for the hazard are possible or favourable, but it is not yet happening: be ready to act if a warning follows. The national record · Every warning type in Idaho.