Copyright Information: All images are in the public domain and available for free. If you use this image, credit NOAA/NGDC, Lindie Brewer, U.S. Geological Survey. |
This residence south of Petrolia shifted because the house was not anchored to the foundation. The structure, which was declared a total loss by insurance standards, shifted toward the northwest. A primitive post and pier foundation was common in the Petrolia area. This view shows separation of the porch from the rest of the structure. The house damage was more severe where additions were attached to the original structure. Image Credit: Lindie Brewer. U.S. Geological Survey April 25, 1992 Cape Mendocino USA earthquake On April 25, 1992 at 11:06 am local time (April 25 at 18:06 GMT), a magnitude 7.1 earthquake occurred in the Cape Mendocino area. Two additional earthquakes, magnitudes 6.6 and 6.7 occurred the next morning (April 26 at 00:41 and 04:18 am local time). The first earthquake was located six miles north of Petrolia, California, in a sparsely populated part of southwestern Humboldt County. Five small communities were located within a 50-mile radius of these events: Honeydew, Petrolia, Rio Dell, Scotia, and Ferndale. Event Data:
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