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California's free earthquake early ... set to trigger alerts if a quake is estimated at magnitude 4.5 or higher and the intensity of shaking at the phone’s location is expected to be ...
Northern California was rocked by a 7.0 magnitude earthquake late Thursday morning.. After the tremor struck at 10:45 a.m., just over 60 miles to the west-southwest of Humboldt County’s Ferndale ...
According to the USGS, "ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes. These maps are used by federal, state, and local organizations, both public and private, for post-earthquake response and recovery, public and scientific information, as well as for preparedness exercises and ...
Probabilistic seismic hazard map. The earliest known earthquake in the U.S. state of California was documented in 1769 by the Spanish explorers and Catholic missionaries of the Portolá expedition as they traveled northward from San Diego along the Santa Ana River near the present site of Los Angeles. Ship captains and other explorers also ...
This feed shows aerials over San Francisco Bay after northern California was hit by a 7.0 magnitude earthquake late Thursday morning (5 December), prompting a tsunami warning. The quake struck ...
PHOTO: A handout shakemap made available by the United States Geological Survey (USGS) shows the location of a 7.0-magnitude earthquake hitting off the coast of Cape Mendocino, Calif., on Dec. 5 ...
Monday's magnitude 4.4 earthquake — centered near Highland Park — came with an early warning from California's quake alert system.
“Drop, Cover, Hold on. Protect yourself,” the U.S. Geological Survey warned moment before the eathquake struck.