Science ❯ Geology ❯ Seismology

Earthquake Magnitude

Seismic Waves Tectonic Plates Tectonic Activity Impact Assessment Tsunami Generation Aftershocks Seismic Activity Richter Scale Tsunami Formation Tsunami Warnings

6.1‑Magnitude Earthquake Strikes Off Western Cuba, Shaking Florida

Seismologists warn the quake’s shallow depth raises the chance of aftershocks.

7.8-Magnitude Earthquake Strikes Southern Mindanao, Philippines

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Cluster of Shallow Quakes Rattles Northern California Coast

Deep M6.1 Earthquake Shakes Offshore Calabria

Strong M6.8–6.9 Earthquake Strikes Near Calama, Chile

Guangxi Quake Kills Two as 7,000 Evacuate and Last Trapped Resident Is Rescued

Magnitude 6.7 Quake Off Ofunato Jolts Tohoku With No Tsunami Threat

Series of Small Quakes Near Tehran Follows 4.6 Shock

Brawley Earthquake Swarm Eases After 350-Plus Quakes With Magnitude 4.7 Peak

Magnitude 6.0 Quake Shakes Samar in the Philippines

Magnitude 5.7 Quake Shakes Nara and Osaka With No Tsunami Alert

Japan Ends Major-Quake Advisory After New 6.1 Tremor in Hokkaido

Magnitude 6.2 Quake Shakes Hokkaido With No Tsunami Warning

Magnitude 5.7 Quake South of Crete Triggers Civil Protection Alert

Japan Lifts Tsunami Alerts After 7.5+ Offshore Quake, Cites Slight Rise in Mega-Quake Risk

Tsunami Warnings Lifted After Strong Quake Off Northeast Japan

Tsunami Alerts Lifted After Northern Japan Quake as Short-Term Risk Rises

Japan Lifts Tsunami Alert After Northern Quake and Warns of Higher Mega-Quake Risk

Light Earthquake Shakes Leipzig Area With No Damage Expected

Magnitude 4.5 Quake Near Cadia Mine Halts Underground Operations in NSW