The Sisi Fire, burning in Okanogan-Wenatchee National Forest, expanded significantly after critical fire weather triggered growth on August 20. Fire behavior remains active, with backing, flanking, uphill runs, and spotting reported. The fire is located near Lucerne, Holden Village, and Stehekin.
The Pacific Crest Trail remains closed between North Cascades National Park and High Bridge along Agnes Creek. Full-suppression strategy is in place, with efforts focused on minimizing fire footprint while protecting communities and resources.