M5.5 Earthquake Recorded Near 5 km ESE of Asahi, Japan
USGS Week reports M5.5 near 5 km ESE of Asahi, Japan, with a 41.4 km catalog depth.
The event began at Wed, 28 Oct 2026 15:07:52 GMT. USGS Week reports magnitude 5.5, 41.4 km catalog depth, and coordinates 35.702, 140.706.
The catalog location label is 5 km ESE of Asahi, Japan; no separate nearest-city field was supplied with this solution. By catalog depth, this is an intermediate-depth event. The magnitude-derived energy estimate is 1.12e+13 joules, or about 2,682 tons of TNT equivalent; that calculation describes source energy, not local damage.
The current catalog entry does not include a public felt-report count. Other attached observation fields include catalog significance score 465. No official casualty or damage statement is attached to the normalized event evidence.
The USGS Week catalog currently marks the solution as reviewed. No station-count, phase-count, residual, gap, or uncertainty fields were supplied in the normalized record. 1 alternate network solution is retained for comparison.
The provider record does not carry a tsunami flag at publication time. Magnitude, depth, and location can change as monitoring networks add observations and review the solution.
At a glance
- Magnitude 5.5
- 41.4 km catalog depth
- 1.12e+13 J magnitude-derived energy estimate
- Origin: Wed, 28 Oct 2026 15:07:52 GMT
- No felt-report count supplied
- USGS Week monitoring record