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M 7.0 earthquake – Fox Islands, Aleutian Islands, Alaska

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Local time: Dec 31, 1901 · 19:20 (UTC-10)

Major Reviewed by a seismologist
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Magnitude
7.0surface-wave magnitude (ms)
Depth
—
Epicenter
52.380, -167.4501,445 km from Anchorage
Energy released
477 kilotons of TNTabout 32 × Hiroshima
Felt reports
—"Did You Feel It?" responses
Shaking intensity
—not estimated
Aftershocks
0M2.5+ within 73 km
Significance
754USGS score, 0–1,000+
Not rare around here

An earthquake at least as strong struck within 300 km on Dec 31, 1901.

How strong was it?

Major earthquake. It released 477 kilotons of TNT, 1,000 times the energy of a magnitude 5.0. Bars use the magnitude scale: every step is about 32 times more energy.

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