Severe · Flood WatchActive alert

Flood Watch issued September 15 at 11:58AM MDT until September 17 at

Affecting Zion National Park; South Central Utah; Western Canyonlands; Glen Canyon Recreation Area/Lake Powell

In effect until: Sep 16, 2026, 9:00 AM

Zion National Park; South Central Utah; Western Canyonlands; Glen Canyon Recreation Area/Lake Powell

Possible impact zone; conditions develop through 9:00 AM.

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

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Read the original bulletin (official text)

* WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...A portion of Utah, including the following areas, Glen
Canyon Recreation Area/Lake Powell, South Central Utah, Western
Canyonlands and Zion National Park.

* WHEN...From late tonight through late Wednesday night.

* 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...
- Deep moisture will remain in place across the region. Several
disturbances will fuel development of thunderstorms with rainfall
rates in excess of 0.25 to 0.50 inches per hour.  In areas with
training thunderstorms, rainfall rates will exceed 0.50 inches
per hour. This will cause flash flooding in areas such as
normally dry washes, slot canyons, and slickrock areas.
- http://www.weather.gov/safety/flood

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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™

Flood Watch issued September 15 at 11:58AM MDT until September 17 at

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