Officials warn of potential flash floods in burn scars and Zion National Park

WASHINGTON COUNTY, Utah (ABC4) — Monsoon season is here, and the National Weather Service is warning of possible flash flooding along burn scars and in Zion National Park following heavy rainfall yesterday.

Even though the Forsyth Fire continues to smolder above Pine Valley, they are already feeling the effects of the monsoon rain. A flash flood swept through part of the forest near the campground yesterday, washing debris across the road, but it was in an area that was already closed off to visitors.

The slide came just before a public meeting regarding the flooding risk.

“It’s frightening when a disaster happens. You think it’s not going to ever happen to you,” said Pine Valley resident Michele Stephens. “But then it does happen to you, and the realization comes that it can happen. And you realize you need to be prepared and that you’re kind of helpless to Mother Nature.”

Washington County officials say burnt ground can trigger flash floods for years. And with monsoon season underway, they’re preparing for more.

“Pine Valley is one of our big concerns with the burn scar from the forest fire,” said Washington County Emergency Services Director Jason Whipple. “And that tends to be a problematic area because of the runoff that comes down there and the debris that comes with it.”

While Pine Valley remains a serious flash flood concern, the other area officials are watching closely is Zion National Park, especially with so many visitors in the slot canyons.

“These canyons are connected, and they’re all part of a greater watershed system,” says Daniel Fagergren, Chief Park Ranger for Zion National Park. “So if it rains in one small corner of the park, it’s likely going to impact other areas in the park.”

With monsoon season running through September, officials say now is the time to prepare, especially when visiting or living in an area with flood risk.

“Survey your property, look at some things that can be improved there,” Whipple adds. “Things that might be low-lying, that might need sandbags like your home. And then watch the weather. Listen to any watches and warnings that come out.”

From Zion to Pine Valley, the threat of flash floods is real, and even small storms can quickly become big problems. Officials say to stay weather aware, even if the skies look clear, and to be sure to sign up for emergency alerts.

Joseph DeGolyer contributed to this report.