Alert archive / Idaho / Flash Flood Watches
Flash Flood Watches in Idaho, 2026
13 flash flood watches in 2026. 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 flash flood watches reaches back to 2005.
Flash Flood Watches by county
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Flash Flood Watches
- 13
- Busiest month
- July4 flash flood watches
- Busiest day
- June 27, 20262 flash flood watches
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 |
|---|---|---|---|---|
| Jun 26, 9:45 PM MDT | Flash Flood Watch | BOI | Boise, Camas, Elmore | 23 hr |
| Jun 26, 10:19 PM MDT | Flash Flood Watch | PIH | Blaine, Custer | 23 hr |
| Jul 16, 12:44 PM MDT | Flash Flood Watch | BOI | Boise, Camas, Elmore | 28 hr |
| Jul 16, 1:07 PM MDT | Flash Flood Watch | PIH | Blaine, Custer | 28 hr |
| Jul 21, 10:17 AM MDT | Flash Flood Watch | BOI | Boise, Camas, Elmore | 35 hr |
| Jul 21, 11:09 AM MDT | Flash Flood Watch | PIH | Blaine, Custer | 34 hr |
| Aug 12, 12:43 AM MDT | Flash Flood Watch | PIH | Bonneville, Fremont, Jefferson, Madison | 45 hr |
| Aug 13, 9:11 AM MDT | Flash Flood Watch | BOI | Adams, Boise, Camas, Elmore, Gem, Valley and 1 more | 60 hr |
| Aug 13, 9:39 AM MDT | Flash Flood Watch | PIH | Blaine, Bonneville, Custer, Fremont, Jefferson, Madison | 59 hr |
| Sep 2, 2:03 PM MDT | Flash Flood Watch | BOI | Adams, Boise, Camas, Canyon, Elmore, Gem and 4 more | 53 hr |
| Sep 2, 7:33 PM MDT | Flash Flood Watch | PIH | Blaine, Custer | 47 hr |
| Sep 18, 2:52 AM MDT | Flash Flood Watch | PIH | Bonneville, Fremont, Jefferson, Madison | 8 hr |
| Sep 18, 10:50 AM MDT | Flash Flood Watch | BOI | Ada, Adams, Boise, Camas, Canyon, Elmore and 8 more | 13 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
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.