The Bay Area's hot temperatures, mixed with high winds have put many areas under Red Flag fire warnings.
The warnings are in the North Bay, the East Bay and the South Bay for areas above 1,000 feet and will be in effect until Thursday at noon.
Several fires broke out overnight in the North Bay.
Two were significant enough to be named by Cal Fire. The "Yellow Fire" is near Calistoga and the "Silverado Fire" is in the Napa Valley.
The Napa fire was 100 percent contained on Wednesday. The Sonoma County blaze was 50 percent contained, with full containment expected Thursday.
The fire fight was a tough one Wednesday thanks to hot temperatures along the fire line.
As a high pressure system strengthens throughout the week, it is making for the warmest stretch of weather so far this year.
The hottest day of the week will come Thursday.
Inland highs are expected to reach 90 degrees or above, with no cooling until the weekend.
The National Weather Service has posted high wind advisories with gusts up to 50 miles per hour.
- Santa Rosa - 90
- San Rafael - 85
- Napa - 88
- Fairfield - 93
- Concord - 90
- Livermore - 91
- San Jose - 87
- Gilroy - 91
- Los Gatos - 85
- Redwood City - 86
- San Francisco - 79
The San Rafael Fire Department declared an extreme fire danger "red flag" warning. Temperatures in Marin climbed into the 90s.
Residents in the Red Flag area are being asked to report any sign of smoke immediately and to use extreme caution when operating any machinery or equipment near grass or brush.
Daytime highs will soar into the lower 90s inland, lower 80s bayside, and lower to mid 70s at the coast.
The hottest days of the week will come Thursday and Friday with inland temperatures reaching the mid 90s.
The weekend will see a slight cooling trend.