Earthquake Resources for the Western United States

Knowing about earthquakes in your region

6.0 Earthquake Rattles Northern California
On August 24, 2014, a magnitude 6.0 earthquake damaged buildings and sent people to the hospital in Napa, California. Justin Sullivan / Getty Images

Quake-related information—maps, reports, advice—for the United States west of the Rockies. Northern California and Southern California have their own separate categories.

Western U.S.: Seismic Hazard Map—From the Global Seismic Hazard Assessment Program.

Western U.S.: US Earthquake Information by State—This handy linklist from the National Earthquake Information Center includes Alaska and Hawaii.

Alaska: Seismic Hazard Map—From the Global Seismic Hazard Assessment Program.

Alaska: Seismicity—Earthquake maps and lists from the Alaska Earthquake Information Center.

Arizona: Earthquake Information—The Arizona Earthquake Information Center is devoted to the state's particular seismic situation.

Cascadia (Coastal Calif/Ore/Wash): The Coming Giant Earthquake—Cascadia is America's own tectonic version of Sumatra, where the magnitude 9.3 earthquake and tsunami of 2004 occurred.

Cascadia: Pacific Northwest Seismic Network—An active, authoritative site about Washington and Oregon quakes.

Guam: Earthquake Information—A handy linklist from the National Earthquake Information Center.

Hawaii: Earthquakes—The Hawaii Volcano Observatory has a special section for seismicity on the island of Hawai'i.

Mountain States: Historic Earthquake Accounts—The University of Utah has news stories, photos and personal accounts of 48 historic earthquakes in Montana, Wyoming, Idaho and Utah starting in 1876.

Nevada: Earthquake Preparedness—The Nevada Seismological Laboratory presents good advice and publications.

Nevada: Maps and Data—The Nevada Bureau of Mines and Geology has many different maps and various data on their website. 

New Mexico: Earthquakes—A page from the New Mexico Bureau of Mines and Mineral Resources has quick answers to questions plus links to more details.

Oregon: Seismic Hazard Map—Colored maps show risks of various aspects of Oregon earthquakes, from the US Geological Survey.

Utah: Earthquake Threats—From the University of Utah site, a broad guide for citizens living along the Wasatch Front and the Intermountain Seismic Belt.

Washington: Mount Rainier Seismicity—This volcano poses many different threats to the Seattle area, earthquakes being just one.

Washington: Preparedness Pays in Seattle—The city promotes earthquake preparedness through organization and retrofitting.

Wyoming: Earthquakes—A database from the Wyoming State Geological Survey gives basic information about each notable quake since statehood in 1870.

Wyoming: Yellowstone Earthquakes—The University of Utah presents current and historic quake maps of this fascinating region where the North American plate is cracking and erupting lava.