Authorities say a wildfire in Northern California's Sierra foothill grew to more than three square miles Friday, forcing 1,650 people from their homes as the blaze threatens structures. The fire started Tuesday afternoon, charging through inaccessible terrain and climbing out of a steep canyon along the middle fork of the American River. California Department of Forestry and Fire Protection spokesman Daniel Berlant says the Red Cross has set up an evacuation center in Auburn, near Sacramento and 140 miles northeast of San Francisco. The National Interagency Fire Center said Friday that parts of intermountain West also face above-normal chances of significant fires in July because grasses and small trees are dry.