Jamie Coffin recalls being one of several people flown out of the Grand Canyon because of a chlorine gas leak.

Two fast-moving wildfires—the Dragon Bravo and White Sage fires—have scorched more than 45,000 acres, destroyed the iconic North Rim lodge and dozens of structures, and led to long-term closures in the Grand Canyon.

The North Rim was evacuated Thursday because of wildfire and will remain closed for the rest of the season, the park said in a statement.

Wildfires have forced evacuations at two U.S. national parks in the West as summer monsoon storms increase lightning in the region.

Fire crews expected to continue using aircraft to support ground crews on northern Arizona wildfires, according to InciWeb, a wildfire tracker.

Authorities maintained the evacuation zones for the White Sage Fire north of the Grand Canyon as the fire grew expectantly.

Wildfires have forced evacuations for visitors and staff at two national parks — Gunnison and the Grand Canyon — in the U.S. as the summer monsoon season brings increased lightning to the arid region.

A growing wildfire ignited by lightning is prompting evacuations near the Grand Canyon after burning through over 1,000 acres in Arizona