M 4.8 earthquake – 55 km ESE of Koshima, Japan
·
Local time: Aug 30, 2026 · 06:00 (UTC+9)
LightShallow · 35 km
Reviewed by a seismologist
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- Magnitude
- 4.8body-wave magnitude (mb)
- Depth
- 35 kmShallow earthquake
- Epicenter
- 29.969, 131.02885 km from Nishinoomote
- Energy released
- 239 tons of TNTless than one Hiroshima bomb
- Felt reports
- —"Did You Feel It?" responses
- Shaking intensity
- —not estimated
- Aftershocks
- 1M2.5+ within 30 km, up to 60 days
- Significance
- 354USGS score, 0–1,000+
Not rare around here
An earthquake at least as strong struck within 300 km on Aug 22, 2026.
How strong was it?
Light earthquake. It released 239 tons of TNT, 2 times less than a magnitude 5.0. Bars use the magnitude scale: every step is about 32 times more energy.
Aftershocks
1 earthquakes of M2.5+ within 30 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
- 7.9 108 km NW of Naze, Japan Jun 15, 1911
- 7.6 78 km S of Naze, Japan Jun 16, 1938
- 7.5 18 km NNE of Nichinan, Japan Feb 26, 1961
- 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