LIGHT EARTHQUAKE
2 km N of Honchō, Japan
A magnitude 4.5 earthquake struck 2 km N of Honchō, Japan on 21 Oct 2026, 01:04 UTC. The hypocentre was 90.3 km below the surface — intermediate by seismological convention. The figures have been revised 1 time since the first report. 3 other earthquakes above our reporting threshold have been recorded within 250 km in the past 30 days.
- Depth
- 90.3 km
- Latitude
- 35.72°N
- Time
- 01:04 UTC
- Magnitude
- M4.5
intermediate
139.98°E longitude
21 Oct 2026
mb
EPICENTRE
MAGNITUDE 4.5
Noticeable shaking of indoor objects. Damage is unlikely.
The scale is logarithmic: this released about 180 times the energy of a magnitude 3.0, roughly the energy of 85 tonnes of TNT.
90.3 KM DEEP
At this depth the energy spreads before it reaches the surface. Shaking is usually weaker than a shallow earthquake of the same size, but it can be felt across a wider area.
NEARBY IN THE PAST 30 DAYS
3 earthquakes above our reporting threshold within 250 km of this one, the largest a magnitude 5.3.
OTHER RECENT EARTHQUAKES
21 Oct 2026, 01:20 UTC · 10 km deep
20 Oct 2026, 23:24 UTC · 529.8 km deep
20 Oct 2026, 23:16 UTC · 65.6 km deep
20 Oct 2026, 22:51 UTC · 10 km deep