Severe Flood ● Active
Flash Flood Watch issued October 21 at 10:06AM MDT until October 23 at 12:00PM MDT by NWS Boise ID, United States of America
Loading live data… · Marker positions are approximate; severity is labelled in each popup. Sources: USGS, GDACS, NASA EONET, NOAA/NWS, EMSC.
* WHAT...Flash flooding and debris flows caused by excessive rainfall
are possible over the Crooked burn scar and Wapiti burn scar. Total
rainfall up to 1.25 inch is possible on the burn scars.
* WHERE...Wapiti and Crooked burn scars in southwest Idaho.
* WHEN...From Thursday evening through Friday morning.
* IMPACTS...Heavy rainfall over the Crooked and Wapiti burn scars is
expected up to and during the period of the watch. Residents near
the Crooked and Wapiti burn scar should prepare for potential
debris flow. Be sure to stay up to date with information from local
authorities. Heavy rainfall could trigger flash flooding or debris
flows in and near recent wildfire burn scars.
* ADDITIONAL DETAILS...
- National Weather Service Meteorologists are forecasting heavy
rainfall over the Crooked and Wapiti burn scar, which may lead to
flash flooding and debris flows.
- Some locations that may experience flash flooding include...
Grandjean and Barber Flat Guard Station.
- https://www.weather.gov/safety/flood
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | Boise Mountains |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Future |
| Cap Certainty | Possible |
| Cap Expires | 2026-10-22T06:15:00-06:00 |
Official source
Warnings courtesy of the issuing national meteorological service, via the WMO Alert Hub.
This is an official warning issued by the authority named above. Follow its instructions and those of your local emergency services.
Severity as published by WMO Alert Hub (national weather services).
View original reportThis event as JSON · API and licence
Source updated 1 hour ago (Oct 21, 2026 16:07 UTC) · we last heard from WMO Alert Hub (national weather services) 36 seconds ago
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About this location
The agency did not publish coordinates for this warning. The pin is the centre of the country, not the location of the event — read the area name, not the map, for where it applies.
Area as the agency stated it: Boise Mountains
Official authorities in United States
If you are there, these are the bodies whose instructions apply. This site is not an emergency service and does not issue warnings.
More for United States →What to do
Follow the instructions issued by WMO Alert Hub (national weather services) and your local emergency services. The guidance below is background.
Flood preparation, evacuation decisions, and the dangers of driving or walking through floodwater.
Open Flood Safety Guide →Earlier flood events in United States
Severe and extreme events of the same kind, before this one. Listed for scale, not because they are connected to it.
Nearby & related events
Disclaimer: figures are automatic feeds from the named agencies and may be revised. Do not use this page for life-safety decisions — follow official local emergency services.