Severe Flood ● Active
Flood Watch issued October 21 at 12:22PM MDT until October 23 at 12:00AM MDT by NWS Salt Lake City UT, United States of America
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* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.
* WHERE...A portion of Utah, including the following areas, Castle
Country, Central Mountains, San Rafael Swell, Bryce Canyon Country,
Capitol Reef National Park and Vicinity, Glen Canyon Recreation
Area/Lake Powell, South Central Utah, Southern Mountains, Upper
Sevier River Valleys, Western Canyonlands, Lower Washington County
and Zion National Park.
* WHEN...Through Thursday evening.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, dry washes, slot canyons, and other low-lying and
flood-prone locations such as slickrock areas and recent burn
scars.
* ADDITIONAL DETAILS...
- A late season surge of tropical moisture will bring widespread
moderate to at times heavy rainfall across much of southern Utah
through Thursday. Local rainfall totals in excess of 3 inches are
expected through Thursday evening.
- All normally dry washes, small streams and mainstem rivers will
see elevated flows from this excessive rainfall, with periods of
heavier rainfall resulting in flash flooding. Backcountry roads
may become impassable due to flooding.
- http://www.weather.gov/safety/flood
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | Central Mountains; Castle Country; San Rafael Swell; Lower Washington County; Zion National Park; Southern Mountains; Upper Sevier River Valleys; Bryce Can |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Future |
| Cap Certainty | Possible |
| Cap Expires | 2026-10-22T03:30:00-06:00 |
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 59 minutes ago (Oct 21, 2026 18:23 UTC) · we last heard from WMO Alert Hub (national weather services) 6 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: Central Mountains; Castle Country; San Rafael Swell; Lower Washington County; Zion National Park; Southern Mountains; Upper Sevier River Valleys; Bryce Can
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.