10/19/2026
When hiking in the desert, please always be aware of the current weather and flash flood potential. The risk is especially high in narrow slot canyons. If storms are in the forecast, we strongly recommend making alternative plans.
Remember, just because the Narrows is open does not indicate that it is necessary safe for hikers. The National Park will close the Narrows if the flow rate reaches 150 cfs or above, or we are under an active Flash Flood Warning.
Keep in mind: even clear blue skies don’t guarantee safety — flash floods can start miles away. When checking the weather, we also check the watershed up canyon that feeds into the Narrows.
Aside from the presence of an incoming rain storm, there are four warning signs that there is an incoming flash flood. Any combination of the following four signs are an indicator:
1. Rapidly rising water levels.
2. Rapid increase in current speed (CFS).
3. Sudden change from clear water to brown, muddy, and churning current.
4. Large pieces of debris flowing downstream.
In the event of a flash flood, seek high ground and get out of the way of the water. Do not attempt to beat the flood out of the canyon. Remember — when in doubt, stay the heck out.
At Zion Adventures® we monitor the weather daily, comparing multiple weather forecasts. We also monitor flash flood potential, the flow rate of the river, and any warnings released by the National Park and National Weather Service. If you would like to chat with an outfitter about weather assessment, please call us or stop in. We’re always happy to chat :)
