California Faces Elevated Fire Weather as Autumn Cooldown Sweeps Across West

The national preparedness level remains at Level 2, reflecting moderate wildland fire activity across the country. Wildfire activity and cumulative area burned this season continue to track well above the ten-year national average, with suppression resources concentrated primarily in California. A deepening low-pressure trough is bringing cooler temperatures and moisture across the Northwest and northern Rockies, though gusty winds sustain elevated fire conditions in parts of California.

Significant Fires

• Cyrus Fire (California) — Burning in dense grass and brush southeast of Kernville, the fire made rapid uphill runs toward Lake Isabella neighborhoods before evacuation orders were downgraded to warnings. Community shelters remain open while crews work to secure the perimeter.
• Dome Fire (California) — Crews in Yosemite National Park are strengthening handlines along the eastern perimeter and maintaining structure protection around the historic Ostrander ski hut. Glacier Point Road has reopened with caution advisories, though surrounding trails remain closed ahead of incoming drizzle and colder temperatures.
• PK Fire (Wyoming) — Burning through private rangeland southwest of Beckton Road in Sheridan County, the fire prompted road closures that remain in place for emergency traffic. Evacuation alerts have been downgraded to ready status as cooler weather moves into northern Wyoming.
• Marmot Drive Fire (Montana) — After igniting on private land in Cascade County under dry and windy conditions, the fire's forward progress was checked by arriving cooler temperatures and rising humidity.
• Sisi Fire (Washington) — Located northwest of Stehekin, the fire is smoldering in timber litter with perimeter activity dampened by recent precipitation. Firefighters continue to monitor the area and maintain structure protection.
• Bouquet Fire (California) — The fire in the Angeles National Forest northeast of Santa Clarita is contained, with crews mopping up along Bouquet Canyon Road. Federal prosecutors have filed arson charges in connection with the incident.

Conditions and Outlook

A Red Flag Warning is in effect across the Northern Sacramento Valley and adjacent foothills through early Monday morning due to gusty northerly winds and low relative humidity. A deep autumn weather system is spreading cooler temperatures and chances of mountain rain or snow across the Northwest, northern Rockies, and Sierra Nevada. Around active fires in the Sierra, breezy conditions give way to sharply colder temperatures and drizzle by Monday before turning dry and calm by mid-week.

What Residents Should Do

• Monitor local emergency management portals for active evacuation warnings and shelter locations.
• Avoid outdoor burning and activities that could spark fires during Red Flag Warning conditions.
• Respect all emergency road and trail closures to keep access clear for fire crews.