M 6.6 earthquake – 10 km ENE of Wailua, Hawaii

Jan 23, 1938 · 08:32 UTC · Jan 23, 1938
Local time: Jan 22, 1938 · 22:02 (UTC-10:30)

StrongShallow · 10 km Reviewed by a seismologist

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Magnitude: 6.6moment magnitude (mw)
Depth: 10 kmShallow earthquake
Epicenter: 20.898, -156.05543 km from Kīhei
Energy released: 120 kilotons of TNTabout 8 × Hiroshima
Felt reports: —"Did You Feel It?" responses
Shaking intensity: 7.3max. instrumental (MMI)
Aftershocks: 0M2.5+ within 43 km
Significance: 676USGS score, 0–1,000+

The strongest here since 1908

The last earthquake at least as strong within 300 km struck on Sep 21, 1908.

How strong was it?

Strong earthquake. It released 120 kilotons of TNT, 251 times the energy of a magnitude 5.0. Bars use the magnitude scale: every step is about 32 times more energy.

Chile 1960 M 9.5

Japan 2011 M 9.1

San Francisco 1906 M 7.9

Turkey 2023 M 7.8

Haiti 2010 M 7.0

Northridge 1994 M 6.7

This earthquake M 6.6

The strongest earthquakes within 300 km

Since 1900, around United States.