NEW : The fire has burned nearly 1,900 acres and is 40 % contained . 800 fire personnel are fighting Carstens Fire ; More than 2,200 structures threatened . The blaze is striking in and around California near Yosemite National Park . The fire is happening weeks before the normal start of wildfire season in California .
NEW : The fire has burned nearly 1,900 acres and is 40 % contained . More than 2,200 fire personnel are fighting Carstens Fire ; 800 structures threatened . The blaze is striking in and around Mairposa County near Yosemite National Park . The fire is happening weeks before the normal start of wildfire season in California .