M 7.0 earthquake – 21 km SE of Tsunō, Japan
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Local time: Jul 26, 1970 · 07:41 (UTC+9)
MajorShallow · 43 km
Reviewed by a seismologist
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- Magnitude
- 7.0moment magnitude (mw)
- Depth
- 43 kmShallow earthquake
- Epicenter
- 32.138, 131.75123 km from Kawaminami
- Energy released
- 477 kilotons of TNTabout 32 × Hiroshima
- Felt reports
- —"Did You Feel It?" responses
- Shaking intensity
- 6.3max. instrumental (MMI)
- Aftershocks
- 1M2.5+ within 73 km, up to 60 days
- Significance
- 754USGS score, 0–1,000+
Not rare around here
An earthquake at least as strong struck within 300 km on Apr 21, 1969.
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.
Aftershocks
1 earthquakes of M2.5+ within 73 km in the 60 days after.
The strongest earthquakes within 300 km
Since 1900, around Japan.
- 8.0 1941 Hyuganada Earthquake Nov 18, 1941
- 7.9 58 km ESE of Takanabe, Japan Nov 2, 1931
- 7.5 18 km NNE of Nichinan, Japan Feb 26, 1961
- 7.5 60 km ESE of Nobeoka, Japan Apr 1, 1968
- 7.5 18 km SE of Honmachi, Japan Nov 10, 1909
- 7.4 152 km ESE of Koshima, Japan Feb 1, 1916
- 7.4 22 km N of Nishinoomote, Japan Jul 13, 1923
- 7.2 29 km ESE of Takanabe, Japan Apr 13, 1913