The Big Grass Fire, ignited by lightning on July 23, 2026, has advanced to threaten the community of Jordan Valley, with point protection operations underway for multiple residences. The fire continues to spread eastward up South Mountain, with potential impacts expected on residential properties, critical infrastructure, and recreational facilities.
The fire's progression has shifted operational focus to protecting the wildland-urban interface, including threatened structures, the Wild and Scenic River corridor, and priority wildlife habitats. Continued fire behavior is expected to worsen with afternoon winds, risking further spread into Idaho and toward additional community resources.