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Earthquake Measurement

San Ramon Quake Swarm Flares Up, Rattles Oakland With New Jolts

Experts say the activity fits a recurring San Ramon swarm on the Calaveras Fault with only a short-term, modest rise in risk.

Tsunami Warnings Lifted After Powerful Quake Off Northeast Japan

USGS Investigates False 5.9 Nevada Quake Alert That Lit Up Phones Across California

Series of Small Quakes Rattles Bay Area and Central Coast, Latest a M3.4 Near San Juan Bautista

Magnitude 6.0 Quake Near Anchorage Rattles Southcentral Alaska on Thanksgiving

Paso Robles 4.1 and San Ramon 3.3 Quakes Rattle California With Little Damage

Magnitude 3.6 Quake Reported Near Vallejo With No Immediate Damage

Calaveras Fault Swarm Rattles East Bay as Dozens of Small Quakes Follow M3.8 Near San Ramon

Strong 6.5 Quake Off Guadeloupe Triggers M6.0 Aftershock

Cebu Earthquake Death Toll Climbs to 69 as Search Continues

Magnitude 2.8 Quake Rattles East Bay Early Thursday

Magnitude 4.3 Quake Near UC Berkeley Rattles Bay Area, Triggers ShakeAlert

M7.8 Quake Off Kamchatka Triggers Tsunami Alerts as Alaska Advisories Are Downgraded

Offshore Oregon 5.8 Quake Triggers Aftershocks as Officials Report No Tsunami or Damage

Afghanistan Quake Leaves 800–1,100 Dead as Rescuers Struggle to Reach Cut-Off Villages

San Bernardino County Rattled by Fresh 3.5-Magnitude Quake in Ongoing Tremor Swarm

Second Quake in Three Days Rattles New Jersey and New York City

3.0-Magnitude Quake Rattles New York Metro From Hasbrouck Heights Epicenter

4.2-Magnitude Earthquake Strikes Near Rialto, Followed by 3.1 Aftershock