Science ❯ Geology ❯ Seismology

Earthquake Measurement

Magnitude Scale Magnitude Richter Scale US Geological Survey Magnitude Scales Impact Assessment Tsunami Generation USGS Seismic Waves Magnitude and Depth

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

USGS links the shaking to the Calaveras Fault with low short-term odds of a much larger event.

Magnitude 6.0 Quake Near Anchorage Rattles Southcentral Alaska on Thanksgiving

Magnitude 4.1 Quake Rattles The Geysers Area in Northern California

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

Magnitude 4.7 Quake Shakes Junín as Peru Logs Series of Light Tremors

Magnitude 3.6 Quake Reported Near Vallejo With No Immediate Damage

Magnitude 5.2–5.3 Quake Near Paphos Felt Across Region

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

Afghanistan Earthquake Kills 27 in North, Damages Mazar-e-Sharif’s Blue Mosque

6.3 Quake Strikes Northern Afghanistan as Conflicting Toll Emerges

Quake Near Chitral Reported as M4.0 by PMD, M3.6 by India’s NCS

Magnitude 5.4 Quake Rattles Alaska’s Aleutians, No Tsunami Warning

Howard Community College Links Water Main Break to 2.5-Magnitude Columbia Quake

Magnitude 6.1 Quake Rattles Western Turkey, Collapses Buildings in Balıkesir

Magnitude 6.5–6.7 Earthquake Strikes Indonesia’s Banda Sea With No Tsunami Threat

Two Very Weak Quakes Recorded Near Elchingen Overnight

Magnitude 6.5–6.7 Quake East of Guadeloupe Triggers Tsunami Alert

Shallow M2.4 Quake Rattles Granada Metropolitan Area on Sunday Night

M6.3 Kamchatka Quake Triggers Aftershocks During Asia-Pacific Seismic Flurry

Preliminary 3.2 Quake Rattles East Bay Near Briones Early Sunday