Nuclear Risk Watch · Facility Report
Fukushima Daini Nuclear Power Plant
Japan · Tokyo Electric Power Company Holdings · nuclear power plant · decommissioned · 4,400 MW installed
37.319, 141.021 · generated 2026-11-12 20:22:39 UTC
Current external hazard exposure
LOW · 11.7/100
Earthquake 139 km from Fukushima Daini Nuclear Power Plant, 4 d ago (severity 34%, distance factor 0.40, recency 0.44) plus 7 other active hazards → exposure LOW (11.7/100).
Baseline: this exposure is at or above 82% of the 559 observations recorded for this facility since 2026-08-14 · highest recorded 21.0/100.
Facility impact: no operational effect has been confirmed in the public sources reviewed.Exposure measures external hazard conditions near the site; it is not an assessment of plant engineering safety.
Nearby active hazards (in range)
| Type | Source | When (UTC) | Distance |
|---|---|---|---|
| EARTHQUAKE M4.6 | USGS | 2026-11-09 05:01 | 99 km |
| EARTHQUAKE M4.9 | USGS | 2026-11-10 05:20 | 117 km |
| EARTHQUAKE M5.5 | USGS | 2026-11-07 11:07 | 131 km |
| EARTHQUAKE M5.7 | USGS | 2026-11-09 04:52 | 139 km |
| EARTHQUAKE M4.5 | USGS | 2026-11-08 20:16 | 143 km |
| EARTHQUAKE M4.6 | USGS | 2026-11-11 03:56 | 166 km |
| EARTHQUAKE M4.5 | USGS | 2026-11-12 13:27 | 182 km |
| EARTHQUAKE M6.1 | USGS | 2026-11-06 10:39 | 279 km |
Recent exposure history
- 2026-11-12 19:04 · LOW 11.7
- 2026-11-12 18:03 · LOW 12.2
- 2026-11-12 16:03 · LOW 12.5
- 2026-11-12 15:04 · LOW 11.7
- 2026-11-12 14:03 · LOW 11.8
- 2026-11-12 13:02 · LOW 12.0
- 2026-11-12 11:03 · LOW 12.2
- 2026-11-12 10:03 · LOW 12.3
How this score is calculated
External hazard exposure (0–100) combines four factors: hazard type, severity, proximity to the site and recency — higher when a serious hazard is close and recent. It does not incorporate facility vulnerability or consequence. Full methodology.
LOW 0–20MODERATE 20–40ELEVATED 40–60HIGH 60–80SEVERE 80–100