M 6.8 earthquake – 27 km E of Narman, Turkey

Oct 30, 1983 · 04:12 UTC · Oct 30, 1983
Local time: Oct 30, 1983 · 07:12 (UTC+3)

StrongShallow · 12 km Reviewed by a seismologist

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Magnitude: 6.8moment magnitude (mw)
Depth: 12 kmShallow earthquake
Epicenter: 40.330, 42.18729 km from Oltu
Energy released: 239 kilotons of TNTabout 16 × Hiroshima
Felt reports: —"Did You Feel It?" responses
Shaking intensity: 8.6max. instrumental (MMI)
Aftershocks: 6M2.5+ within 56 km, up to 60 days
Significance: 711USGS score, 0–1,000+

The strongest here since 1976

The last earthquake at least as strong within 300 km struck on Nov 24, 1976.

How strong was it?

Strong earthquake. It released 239 kilotons of TNT, 501 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

This earthquake M 6.8

Northridge 1994 M 6.7

Aftershocks

6 earthquakes of M2.5+ within 56 km in the 60 days after.

The strongest earthquakes within 300 km

Since 1900, around Turkey.