SACRAMENTO, Calif. — October is a month of many changes for California weather. 

Days get shorter and often, cold fronts bring no rain, but instead, windy and dry conditions.

These patterns can set-up extreme fire weather throughout Northern and Southern California. Fires tend to grow quickly in dry and windy weather, which is the forecast starting Tuesday night for parts of the Sierra and lasting until Thursday evening for most of the Northern California region with a Red Flag Warning. 

Humidity levels will drop into the 10 - 15% range at times and wind could gust up to 45 mph for higher elevations including the foothills. If a fire starts, it will have the potential to quickly avoid containment and air attack resources may be limited if the winds are too strong.

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In anticipation of the high fire danger, electric companies such as PG&E may cut power to customers as a safety precaution.

Areas of possible planned power outages this week

Strong wind will create it's own issues such as difficult driving, blowing dust, and downed trees and branches with debris. The temperatures should remain in the 70s for the middle of the week.

Because of these strong winds, PG&E announced that residents in up to 30 counties in Northern and Central California could see their power cut. Counties, potentially impacted include: Alameda, Alpine, Amador, Butte, Calaveras, Colusa, Contra Costa, El Dorado, Glenn, Lake, Mariposa, Mendocino, Napa, Nevada, Placer, Plumas, San Joaquin, San Mateo, Santa Clara, Santa Cruz, Shasta, Sierra, Solano, Sonoma, Stanislaus, Tehama, Tuolumne, Yolo and Yuba.

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