Pleasant Hill Earthquake Jolts Memories Of 1989 Loma Prieta TemblorJust days before the 30th anniversary of the Loma Preita earthquake, a 4.5 magnitude temblor and more than two dozen aftershocks early Tuesday brought back memories for many of that deadly and destructive 1989 October afternoon.
4.5 Magnitude Earthquake Strikes Near Pleasant Hill; Felt Around Bay AreaA pair of earthquakes, measuring 2.5 and 4.5 magnitude respectively,  struck just south of Pleasant Hill on Monday evening, rocking the East Bay, authorities said.
Berkeley Elementary School Deemed At Risk During Major EarthquakeParents of schoolchildren at a Berkeley elementary school are uneasy following a report indicating the school may be unsafe during a major earthquake.
Magnitude 3.5 Earthquake, Aftershocks Strike PeninsulaA magnitude 3.5 earthquake struck off the coast just south of San Francisco on Saturday morning, jolting local residents from their beds and breakfast tables.
6.3 Earthquake Shakes Off Oregon CoastAn underwater earthquake with an initial 6.3 magnitude has struck off the Oregon coast.
Magnitude 3.5 Earthquake Strikes Lake County Near Hidden Valley LakeA magnitude 3.5 earthquake struck Lake County near the Napa County line Friday morning.
Series Of Small Earthquakes Could Mean Big One Is About To Strike, Research SuggestsScientist may finally know how large earthquakes get started: with many smaller ones.
Oregon Repeals Tsunami-Zone Construction Ban; California Still Has NoneCalifornia has no state-mandated development restrictions in tsunami zones. "In every other country in the world, best practice for tsunamis is avoidance, not building in a tsunami zone," an Oregon seismologist said.
Unprecedented Water Pond in Hawaii Volcano Could Trigger Explosive EruptionsFor the first time in recorded history, a pond of water has been discovered inside the summit crater of Hawaii's Kilauea volcano, a development that could signal a shift to a more explosive phase of future eruptions.
Ridgecrest Hospital's Quake Damage Prompts Questions About State Seismic StandardsRidgecrest Regional is joining hospitals across California in questioning standards designed to keep hospitals open after earthquakes.
USGS Partners Say ShakeAlert Early Earthquake Warning Worked Ahead Of East Bay QuakesFollowing a 4.3-magnitude earthquake and a 3.5 aftershock in Contra Costa County on Tuesday, 50 technical partners of the U.S. Geological Survey’s ShakeAlert early earthquake warning system were successfully notified, according to a coordinator with the program.