Earthquakes

Here’s why emergency sirens were silent in San Francisco during a tsunami warning.

Experts urge people in Southern California, one of the most earthquake-prone regions in the U.S., to be prepared for what’s possible. Alex Rozier reports for the NBC4 News at 4 p.m. on Friday, Dec. 6, 2024.

Northern California was under a rare and brief tsunami warning alert Thursday that tested local emergency notification systems after a 7.0 magnitude earthquake shook part of the state.

After a tsunami warning was issued Thursday, experts urge Southern California, one of the most earthquake-prone regions, to be prepared for what’s possible.

How many 7.0 magnitude earthquakes have there been in Northern California? Here’s what to know about the seismically active region. 

Dozens of offshore aftershocks followed a magnitude-7.0 earthquake off the coast of Northern California that led to a brief tsunami warning.

Residents in Northern California are cleaning up after an earthquake off the coast shook cities, cause some destruction and triggering a tsunami warning. Robert Kovacik reports for the NBC4 News at 11 p.m. on Dec. 5, 2024.

Seismologists say the cancellation of the tsunami warning was the result of the nature of the quake itself. Conan Nolan reports for the NBC4 News at 4 p.m. on Thursday, Dec. 5, 2024. 

Dr. Lucy Jones said Thursday’s earthquake moved the land sideways, which doesn’t displace much water. This segment was broadcast during the NBC4 News at 3 p.m. on Thursday, Dec. 5, 2024.

Most of the tsunamis in California have been small, but some were destructive and deadline. See a list of notable tsunamis.

Robert De Groot with the U.S. Geological Survey is an earthquake is a warning sign for people to prepare for a possible tsunami. This segment was broadcast during the NBC4 News at 12 noon on Thursday, Dec. 5, 2024.

An offshore earthquake of 7.0 magnitude triggered a tsunami warning for parts of the coast of Northern California. It was later canceled as the potential for danger subsided. Watch breaking news from the NBC4 News on Thursday, Dec. 5, 2024.

David Snider from the Tsunami Warning Center said even with the cancellation of the tsunami warning, Californians should still be following local advisories. This segment was broadcast during the NBC4 News at 12 noon on Thursday, Dec. 5, 2024.

People in Northern California shared footage of the 7.0 Magnitude earthquake that rattled the state Thursday.

The tsunami warning launched by NOAA following a magnitude 7.0 earthquake off the coast of California has been canceled.

Dave Snider, Tsunami Warning Coordinator at NOAA, said a destructive tsunami is not likely to occur following a magnitude 7.0 earthquake off the coast of California.

A 7.0-magnitude earthquake off the coast of Northern California triggered a tsunami warning. David Biggar reports for the NBC4 News at 11 a.m. on Thursday, Dec. 5, 2024.

A magnitude-7.0 earthquake off the Northern California triggered a tsunami warning Thursday for the region near the border with Oregon.

Several earthquakes struck Northern California Thursday, including a preliminary magnitude-7.0 offshore in the Pacific Ocean at 10:44 a.m. PT that triggered a tsunami warning along coastal areas from Santa Cruz into Oregon.

A magnitude-3.5 earthquake in the Malibu area Friday afternoon caused shaking in parts of Los Angeles and Ventura counties.