After a ferocious "bomb cyclone" battered the Pacific Northwest with dangerous winds on Wednesday, Northern California and southwest ... life-threatening flash flooding, rock slides and debris ...

Areas of concern include Alameda, Monterey, and San Mateo counties, where flooding ... Islands in the northern Pacific Ocean, the California Geological Survey found. "These maps are based on ...

The California Geological Survey recently released new maps showing that potential tsunamis increase the threat of flooding in Alameda ... Aleutian Islands in the northern Pacific Ocean ...

The magnitude 7 quake Dec. 5 off the Humboldt County coast—which prompted a tsunami warning affecting millions in Northern California ... of the maps, potential tsunami flood areas were ...