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New Quake Record Revives San Andreas Questions as San Francisco Steps Up Safety Push

City leaders pursue upgrades in light of fresh quake science.

4.1 Quake Strikes Geysers Area; 2.9 Aftershock Follows in North Bay

Shallow 3.9 Quake Rattles Assam’s Udalguri With No Damage Reported

SWOT's First High-Resolution Tsunami Swath Upends Assumptions and Extends Quake Rupture

San Ramon Logs 300-Plus Quakes in Ongoing Swarm as USGS Sees No Sign of Major Fault Rupture

Three Quakes Jolt San Ramon as USGS Revises Largest to Magnitude 4.0

Magnitude 3.1 Quake Rattles San Ramon, Extends East Bay Swarm

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

First High-Resolution Tsunami Swath From Space Challenges Forecast Models

Magnitude 4.1 Quake Rattles The Geysers Area in Northern California

Peru Logs Series of Small Quakes as IGP Reports M3.5–4.3 Shaking Across Several Regions

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

Navy Moves Guantanamo Families to NAS Pensacola as Hurricane Melissa Pounds Caribbean

Category 4 Hurricane Melissa Nears Jamaica With Forecasts Eyeing Category 5

Peru Unveils Upgraded Risk-Data Portal as Agencies Log Modest Quakes in Peru, Mexico and Offshore Japan

Magnitude 4.7 Quake Shakes Nikko in Tochigi, No Tsunami Expected

Flash Flood Threat Intensifies in Arizona With Priscilla Fading Offshore

New Study Finds Cascadia and San Andreas Quakes Have Often Struck in Tandem

Study Finds Cascadia Megathrust Often Triggers Northern San Andreas in Closely Timed Quakes

Peru Logs 4.1 Quake Near Puquio as IGP Tracks Series of Small Tremors