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ShakeAlert is an earthquake early warning system (EEW) in the United States, developed and operated by the United States Geological Survey (USGS) and its partners. [1] As of 2021, the system issues alerts for the country's West Coast (specifically the states of California, Oregon and Washington). It is expected that the system will be expanded ...
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 ...
A 4.7 magnitude earthquake struck in Southern California early Thursday, according to the United States Geological Survey.. The strong quake was recorded about 4.35 miles north of Malibu and about ...
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 ...
The magnitude 5.2 earthquake near Bakersfield was felt over a wide area of Southern California. Experts say there are several reason for this, including its size, time of night and the so-called ...
A pair of modest earthquakes rattled Southern California on Saturday morning, with epicenters in Ontario. The earthquakes, of magnitudes 3.5 and 3.9, occurred within about a half hour of each other.
USGS shakemap of one of the strongest aftershocks Map of northern Baja California and Southern California with earthquakes shortly after the main earthquake. Four aftershocks with a magnitude of at least 5 have been reported; one at a magnitude of 5.2, [16] one at 5.4, [17] one at 5.1, [18] and one at a magnitude of 5.7, all four within one hour.
A 4.1-magnitude earthquake shook the Southern California area, the U.S. Geological Survey reported. The nearly 1-mile deep quake hit about 5 1/2 miles southwest from Corona in Riverside County ...