Shasta County and Redding Residents woke up shortly before 4 a.m. Friday morning to a 3.7 Magnitude earthquake, according to ...

Did you know that Southern California is rocked by approximately 10,000 earthquakes per year? Yes according to the US ...

A Southern California earthquake measuring 2.7 struck near Sherman Oaks, sending a jolt through L.A., triggering ShakeAlert ...

The ShakeAlert system, managed by the U.S. Geological Survey (USGS), is designed to detect significant earthquakes quickly, estimate the expected level of shaking, and issue alerts. These messages are ...

The ShakeAlert EEW System, managed by the U.S. Geological Survey (USGS), rapidly detects significant earthquakes, estimates the amount of shaking expected, and issues ShakeAlert Messages ...

The ShakeAlert system, managed by the U.S. Geological Survey (USGS), is designed to detect significant earthquakes quickly, estimate the expected level of shaking, and issue alerts.

Preliminary readings said the Thursday earthquake had a magnitude of 5.7, but the USGS updated its reading to 5.5. The earthquake was followed by several aftershocks that ranged from 2.5 to 3.8 in ...

Robert de Groot, team lead at USGS ShakeAlert Operations, said the issue needed to be investigated further. "There is always the possibility of people who coincidentally feel ground motion around ...

Only a small portion of the earthquakes that occur can be felt. USGS estimates Southern California experiences about 10,000 earthquakes per year, with only 15 to 20 greater than magnitude 4.0.

USGS said people within modified Mercalli intensity (MMI) area 3 could have received an alert. For the Orcas Island quake, this area included Bellingham, Mount Vernon, Oak Harbor and Victoria, B.C.