M 7.9 earthquake – 113 km ENE of Miyako, Japan
·
Local time: Mar 21, 1960 · 02:07 (UTC+9)
MajorShallow · 15 km
Reviewed by a seismologist
Loading the map…
- Magnitude
- 7.9moment magnitude (mw)
- Depth
- 15 kmShallow earthquake
- Epicenter
- 39.869, 143.228113 km from Miyako
- Energy released
- 11 megatons of TNTabout 712 × Hiroshima
- Felt reports
- —"Did You Feel It?" responses
- Shaking intensity
- 6.3max. instrumental (MMI)
- Aftershocks
- 8M2.5+ within 250 km, up to 60 days
- Significance
- 972USGS score, 0–1,000+
The strongest here since 1952
The last earthquake at least as strong within 300 km struck on Mar 4, 1952.
How strong was it?
Major earthquake. It released 11 megatons of TNT, 22,387 times the energy of a magnitude 5.0. Bars use the magnitude scale: every step is about 32 times more energy.
Aftershocks
8 earthquakes of M2.5+ within 250 km in the 60 days after.
- 6.1 111 km E of Miyako, Japan Mar 21, 1960
- 6.0 127 km E of Miyako, Japan Mar 21, 1960
- 7.0 118 km E of Miyako, Japan Mar 23, 1960
- 6.4 118 km E of Yamada, Japan Mar 23, 1960
- 5.9 111 km E of Miyako, Japan Mar 23, 1960
- 5.9 146 km ESE of Yamada, Japan Mar 23, 1960
- 5.8 143 km ESE of Yamada, Japan Mar 23, 1960
- 6.2 119 km ESE of Yamada, Japan Mar 23, 1960
The strongest earthquakes within 300 km
Since 1900, around Japan.
- 9.1 2011 Great Tohoku Earthquake, Japan Mar 11, 2011
- 8.4 1933 Sanriku (Sanriku-oki) Earthquake, Japan Mar 2, 1933
- 8.2 1968 Tokachi-Oki Earthquake May 16, 1968
- 8.2 2003 Tokachi-Oki Earthquake Sep 25, 2003
- 8.1 1952 Tokachi-Oki Earthquake Mar 4, 1952
- 7.9 78 km E of Hachinohe, Japan Mar 9, 1931
- 7.9 70 km S of Honchō, Japan May 16, 1968
- 7.8 off the east coast of Honshu, Japan Dec 28, 1994
In the week before
Earthquakes within 250 km in the 7 days before this one: possible foreshocks.