ZION NATIONAL PARK, Utah — Heavy afternoon and evening storms Monday produced flash flooding at Zion National Park, a dramatic surge of water captured on video that swept mud, rocks and debris over a cliff and onto the park roadway.
Rapid rise in water closes highway, disrupts tours
At 8:51 p.m. MDT the National Park Service reported flash flooding from earlier thunderstorms that dumped intense rain across the park, according to the park’s online conditions update. The flooding forced the closure of the Zion Mount Carmel Highway to east- and west-bound traffic after rockfall made the road hazardous.
Video shared with national outlets by Marisol Woodward shows water racing over a cliff face and carrying sediment and boulders across the pavement. Park officials said the storm also prompted at least one tour company to cancel hiking trips scheduled for Monday.
"While visiting Zion National Park from July through September can bring adventure, it may also include rapidly changing weather. Clear morning skies can quickly build into intense afternoon thunderstorms — transforming the landscape and creating serious hazards. The National Park Service urges visitors to stay informed and be ready for sudden weather changes, including the potential for flash floods."
The NPS reminder — issued late last month as the region sits in its monsoon season — advises visitors to remain alert to sudden weather shifts. Park staff reiterated that hikers should check forecasts and trail conditions before entering narrow canyons or crossing rivers where flash floods can arrive with little warning.
Regional context and recent deadly flooding
The Zion flooding occurred a day after intense flash flooding at the Grand Canyon that required rescuers to pull nearly 80 people to safety and left two people dead with another unaccounted for as of Monday night, officials said. The close timing underscores hazards across the Southwest as monsoon storms continue to produce localized but intense rainfall events.
At Zion, park staff did not release details on injuries or the extent of damage to infrastructure beyond closing the Mount Carmel Highway and noting debris on the roadway. Photos and video circulated on social media showed mud and rocks strewn across pavement and the surrounding landscape carrying a sheen of runoff.
What visitors should know now
- Check the National Weather Service forecast for Salt Lake City and local advisories before traveling to Zion.
- Expect possible closures on the Mount Carmel Highway and trails in side canyons until crews can clear rockfall and assess safety.
- Avoid narrow slot canyons and streambeds during and immediately after heavy rain; even distant storms can send surges downstream.
- If you encounter rapidly rising water, move to higher ground and do not attempt to drive through flooded lanes.
Park officials emphasized that conditions can change quickly during monsoon season, which runs roughly from July through September for southern Utah. Because flash floods can be localized, weather may appear clear in one area while intense storms produce dangerous conditions nearby.
Immediate impact and next steps
Park crews and the National Weather Service continued to monitor conditions Monday night. Authorities advised visitors in the park to follow official closures and to avoid the Mount Carmel Highway until it is declared safe.
For those planning trips to Zion in coming days, the park’s website and social media channels are the primary sources for current trail status, road closures and safety alerts. Tour operators and outfitters have a responsibility to suspend excursions when conditions present elevated risk, and visitors should ask about cancellation and refund policies when booking.
| Item | Monday status |
|---|---|
| Flash flood warning | Issued by NWS Salt Lake City, in effect until 11 p.m. MDT |
| Reported park flooding time | 8:51 p.m. MDT (NPS report) |
| Road closed | Zion Mount Carmel Highway (both directions) |
Visitors and residents should exercise caution while traveling in and around Zion. The park’s striking canyons and cliffs are part of what draws millions of people each year, but those same geological features concentrate water and debris during heavy storms, creating hazards that can be swift and severe.
WE NEWS will continue to monitor updates from the National Park Service and the National Weather Service and report on road reopenings, trail conditions and any developments related to the storm.
