Winds from thunderstorms fanned the McKinney Fire in western Siskiyou County

Brush, tall grass, and trees were on fire in the forest's Oak Knoll Ranger District

The Siskiyou County residents are advised to leave that fire zone

The McKinney Fire produced a pyro cumulus cloud Friday

Firefighters were dealing with extremely high temperatures as a Red Flag Warning for lightning was in effect

Deputies were busy going door-to-door in affected areas on Saturday, informing residents to evacuate

California Incident Management Team was in Yreka on Saturday for briefings

The Pacific Crest Trail Association advised hikers in western Siskiyou to evacuate to the nearest town

Extreme fire behaviour and dangerous conditions are being caused by weather conditions

Firefighters prioritised the evacuation of residents