Science ❯ Geology ❯ Seismology

Earthquake Monitoring

Seismic Events Aftershocks US Geological Survey USGS Tsunami Risk Assessment Risk Assessment Tsunami Warning Systems Impact Assessment Magnitude Measurement Data Analysis

Powerful Quake Off Northeast Indonesia Triggers Tsunami Alerts

Initial estimates ranged from magnitude 7.4 to 7.8.

Small Quakes Strike Southern Mexico With No National Alert

Seismic Swarm Near Nevada’s Tonopah Test Range Prompts Scrutiny, Not Confirmation of Nuclear Tests

Magnitude 4.2 Earthquake Shakes Southern Israel, Triggers Alerts Near Dead Sea

Araxá Nighttime Quake Measured at 3.9 mR With No Damage Reported

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

Two Shallow Quakes Jolt Andhra Pradesh and Karnataka With No Damage Reported

Kamchatka Registers Nine New Aftershocks as Scientists Warn of 10‑Point Quake Risk

M5.0 Offshore Quake Felt in Petropavlovsk‑Kamchatsky as Aftershocks Continue

Philippines Quake Death Toll Rises to 72 as Cebu Shifts to Relief Efforts

Magnitude 5.6 Quake Strikes Gansu’s Longxi, Emergency Response Underway

Quake Swarm Up to Magnitude 6.3 Strikes Northwest Venezuela

Shallow 5.2 Quake Off Euboea Jolts Athens, No Major Damage Reported

4.4-Magnitude Quake Rattles Eastern Nepal With No Damage Reported

Shallow Magnitude 5.8 Quake Near Poso Leaves 29 Injured

Minor Earthquakes Continue Across U.S. and Territories, Largest at 4.6 Mw in Alaska

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

Toshima Village Approves Return of Tokara Islanders After Five-Day Seismic Pause

Fourth Quake in Eight Days Rattles Rohtak, Highlighting Hidden Fault Activity

Magnitude 4.6 Earthquake Shakes Campi Flegrei, Strongest in Four Decades