Geography ❯ Natural Disasters ❯ Earthquakes ❯ Seismic Activity

Magnitude

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

USGS is examining why multiple Nevada sensors triggered its automated ShakeAlert in what officials call a rare full false alarm.

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

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

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

Magnitude 2.8 Quake Rattles East Bay Early Thursday

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

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