Scientists are warning of a potentially catastrophic mega-tsunami that could strike parts of the US Pacific Coast, triggered ...

A recent study indicates a 15% chance of a magnitude 8.0 earthquake striking the Cascadia Subduction Zone within the next 50 years, potentially triggering a catastrophic mega-tsunami. This could ...

Southern California was rocked by a trio of earthquakes in just hours. Two of the quakes struck in 10 minutes, with tremors rattling nerves across Los Angeles.

Some earthquakes are followed by a larger earthquake, in which case the first quake would then be called a foreshock. For ...

A magnitude-2.7 earthquake was reported Friday morning in the San Bernardino County community of Rialto. The quake was centered just north of Rialto and Fontana. Shaking was reported at about 9:30 a.m ...

Since Thursday, at least 131 earthquakes have been recorded — as small as magnitude 0.2 and as big as magnitude 4 — in the ...

A 3.6-magnitude earthquake shook parts of Southern California, the U.S. Geological Survey reported. The about 10-mile deep quake hit about 6 miles southwest from Idyllwild in Riverside County shortly ...