A huge mudslide crashed down on homes in a coastal hamlet with terrifying force Monday, killing three people and leaving up to 12 missing as a Pacific storm hammered Southern California for a fourth straight day. Ventura County Fire Department Chief Bob Roper said as many as a dozen residents were missing in the mudslide that pummeled a four-block area of homes in tiny La Conchita, about 70 miles northwest of Los Angeles. The mudslide brought the number of dead from the latest wave of storms to 12 in California. The storms have sent rainfall totals to astonishing levels, turning normally mild Southern California into a giant flood zone.