California legislators for years have granted extensions on a 1994 law requiring hospitals to retrofit their buildings to ...

Gov. Gavin Newsom signs earthquake retrofit law for California hospitals, allowing some to request deadline extensions. Debate over costs and safety concerns ...

The quake was mostly felt in the San Bernardino County cities and areas of Ontario, Rancho Cucamonga, Eastvale and Chino.

A magnitude 4 earthquake rattled Southern California before dawn Sunday morning — the strongest in a series of modest ...

A seismic 4.0 magnitude earthquake has rattled parts of Southern California in the early hours of Sunday morning. The ...

Some Northern California residents woke up to 3.6 magnitude earthquake Saturday morning, according to the United States ...

An earthquake with a magnitude of 4.0 rattled the Inland Empire early Sunday morning, shaking homes and businesses and waking ...

A magnitude-4.0 earthquake rattled parts of Southern California early Sunday morning.  The quake near Ontario was reported ...

Be ready to drop, cover and hold on when UC Davis tests its WarnMe emergency communications system as a participant in the ...

ONTARIO, Calif. (KABC) -- A magnitude 4.0 earthquake rattled the Ontario area Sunday morning, jolting some residents awake.

California was rocked by three earthquakes in less than 24 hours. The largest was a 3.0 magnitude quake that hit four miles northwest of Walker at 12:33pm local time on Wednesday, followed by a ...

An earthquake shook Southern California's Inland Empire early Sunday morning.The magnitude of the earthquake was 4.0, which ...