Reported by JMA 3 days ago.
It is one of only 4 we have recorded within 20 km of this point since 17 March 2026. The last comparable one was on 30 August 2026.
What the source measured
JMA reported: 20260831185229
An estimated 303,003 people live within 10 km of this point.
Nearby, since 17 March 2026
- August 30, 2026 · score 0 · 0.0 km
- June 30, 2026 · score 0 · 0.0 km
- March 17, 2026 · score 0 · 0.0 km
How we know
One source: JMA. Not yet confirmed by a second, independent source.
Our own score for this event is 21 out of 100, at 82 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v2. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Earthquakes |
| Severity | Low |
| Calamity Score (ours) | 21 / 100 |
| Our confidence | 82% |
| Coordinates | 37.7500, 140.4700 |
| Nearest City | Fukushima (0 km) |
| Population Exposed | 303.0K within 10 km |
| Impact Tier | minor |
| Timestamp | 2026-08-31T09:49:00.000Z |
| Source | https://www.jma.go.jp/bosai/quake/20260831185229_20260831184947_VXSE5k_1.json |
Score Breakdown
Technical Details
| Mag | 3.3 |
| MaxIntensity | 1 |
| AreaName | 福島県中通り |
| ContentType | 20260831185229 |
| Serial | 1 |
Safety Information
If you feel shaking: Drop, Cover, and Hold On. Move away from windows, heavy objects, and exterior walls. After shaking stops, check for injuries and structural damage. Be prepared for aftershocks, which can occur minutes to months after the mainshock. Follow instructions from local emergency management authorities.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Want to know when something happens near Fukushima?
Calamity.live data shows a earthquake event with CalamityScore 21/100, near Fukushima (Japan), based on data from jma. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.