Earthquakes

Earthquake warning system ShakeAlert to be rolled out in Oregon, Washington

In this file photo, Margaret Vinci, manager of the Seismological Laboratory at Caltech points to a shake alert user display on a laptop screen, set for a limited release on June 1, 2017, at the Caltech Seismological Laboratory in Pasadena. (FREDERIC J. BROWN/AFP/Getty Images)

4.3 earthquake registers near Soledad in Monterey County

A magnitude 4.3 earthquake was reported at 6:42 a.m. Jan. 2, 2021 eight miles from Soledad, according to the U.S. Geological Survey. (Quakebot)

2 quakes, magnitudes 3.4 and 3.1, strike north of Ridgecrest

A magnitude 3.4 quake was reported 58 miles from Ridgecrest early morning on Jan. 2, 2020. (U.S. Geological Survey)

2 small earthquakes shake south of Bay Area

A magnitude 3.7 earthquake was reported Dec. 15, 2020 at 6:58 a.m. two miles from Morgan Hill, Calif., according to the U.S. Geological Survey. (U.S. Geological Survey)

3.6 quake strikes near Ramona, the 5th temblor of at least 3.0 magnitude to hit San Diego area in last 10 days

A map from the Los Angeles Times shows where a magnitude 3.6 quake was recorded on Dec. 6, 2020.

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Magnitude 4.4 quake recorded near Northern California coast

A map from the Los Angeles Times shows where a magnitude 4.4 quake was recorded on Dec. 6, 2020. A map from the Los Angeles Times shows where a magnitude 4.4 quake was recorded on Dec. 6, 2020.

Swarm of hundreds of small earthquakes continues in Imperial Valley, but no elevated risk for L.A., Lucy Jones says

A USGS map shows the location of a swam of earthquakes in the Imperial Valley on Sept. 30 and Oct. 1, 2020. The locations marked are for quakes of magnitude 2.5 or larger.

Series of small earthquakes rattles Brawley area

A magnitude 3.4 earthquake was reported five miles from Brawley, California, followed by two smaller quakes on Oct. 1, 2020. (U.S. Geological Survey)

Swarm of more than 240 earthquakes strikes Salton Sea area, including magnitude 4.9 temblor

A magnitude 4.9 that struck after 5 p.m. near the town of Westmoreland on Sept. 30, 2020. (USGS)

No report of damages from 4.5 magnitude quake that jolted L.A. area

A USGS map shows the location of a magnitude 4.5 earthquake that struck about 2 miles south of Rosemead on the night of Sept. 18, 2020.

Swarm of earthquakes near Salton Sea sparks worry about the San Andreas fault

In this photo from Jan. 1, 2019, mud is seen on land that was under the Salton Sea near Calipatria. (David McNew/Getty Images for Lumix)

Ridgecrest temblors tripled chance of big earthquake on San Andreas fault: Study

A USGS Earthquake Science Center Mobile Laser Scanning truck scans the surface rupture near the zone of maximum surface displacement of the magnitude 7.1 earthquake that struck the Ridgecrest area. (Credit: Ben Brooks / U.S. Geological Survey)

Trump administration notifies U.N. of withdrawal from World Health Organization

A photo taken in the late hours of May 29, 2020 shows a sign of the World Health Organization at their headquarters in Geneva amid the COVID-19 outbreak. President Donald Trump he was breaking off U.S. ties with the World Health Organization, which he says failed to do enough to combat the spread of coronavirus. (Fabrice COFFRINI/AFP via Getty Images)

Death toll of magnitude 7.4 quake in southern Mexico rises to 6; hundreds of home damaged

Residents of the Lindavista Housing Unit embrace after being evacuated from their homes due to the risk of collapse on June 23, 2020 in Mexico City, Mexico. (Manuel Velasquez/Getty Images)

Magnitude 4.3 earthquake rattles Searles Valley

A magnitude 4.3 earthquake rattles the Searles Valley on June 7, 2020. (U.S. Geological Survey)