United States, Northwest and Northern Plains

The northwestern states of Washington, Oregon, and Alaska, and portions of Idaho, northern California, and Nevada, are threatened by a wide range of natural and human-made hazards. Of particular concern for emergency management officials in the northwest region are the risks associated with the occurrence of earthquakes, tsunamis, and volcanic eruptions throughout the area. The northern plains includes the prairie regions of Nebraska, North and South Dakota, and Montana, which are also vulnerable to a wide range of natural and human-made hazards, including floods and tornadoes.

Earthquake and Tsunami Hazard Zones

Originating just two miles off of the Pacific northwest coast of San Francisco, a 7.9 magnitude earthquake occurred the morning of April 18, 1906. Rupturing along the San Andreas fault, extending northward and southward over 296 ...

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