Severe Flood ● Closed
Flash Flood Watch issued September 18 at 11:33PM MDT until September 19 at 12:00AM 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.
Heavy downpours are less likely in the steady rainfall behind the
exiting system. The flash flooding threat has subsided. Therefore,
the Flash Flood Watch will expire as scheduled at midnight MDT
tonight. Rain will continue in parts of the watch area through
Saturday.
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | West Central Mountains; Lower Treasure Valley; Boise Mountains; Upper Treasure Valley; Western Magic Valley; Camas Prairie |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Future |
| Cap Certainty | Possible |
| Cap Expires | 2026-09-19T00:45:00-06:00 |
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 30 days ago (Sep 19, 2026 05:35 UTC) · we last heard from WMO Alert Hub (national weather services) 6 seconds ago
On a slow connection? Low-bandwidth version — no map, no scripts, under 14 KB.
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: West Central Mountains; Lower Treasure Valley; Boise Mountains; Upper Treasure Valley; Western Magic Valley; Camas Prairie
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.