Right now
The most recent data we hold from JMA arrived 3 hours ago, and this point is in it.
Nothing else has been detected within 20 km in the last 24 hours.
Reported by JMA today.
It is the only one we have recorded within 20 km of this point since 16 September 2026.
What the source measured
JMA reported: 20260916172411
Urban PEI: 536,117 within a heuristic 15 km radius; not unique people.
How we know
One source: JMA. Not yet confirmed by a second, independent source.
Our own score for this event is 26 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v5. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Earthquakes |
| Severity | Low |
| Calamity Score (ours) | 26 / 100 |
| Legacy data-support index | 0.81/1 |
| Coordinates | 36.5700, 139.8800 |
| Nearest City | Utsunomiya (0 km) |
| Urban exposure index (PEI) | 536.1K within 15 km |
| Impact Tier | minor |
| Timestamp | 2026-09-16T08:21:00.000Z |
| Source | https://www.jma.go.jp/bosai/quake/20260916172411_20260916172127_VXSE5k_1.json |
Physical priority index · v5. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: jma. Occurrence: 2026-09-16T08:21:00.000Z.
First archived: 2026-09-16T08:30:52.471Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-16T15:17:38.658Z · data_change
Index 26 → 26; severity low → low; version 5 → 5.
Score Breakdown
Technical Details
| Mag | 2.7 |
| MaxIntensity | 2 |
| AreaName | 栃木県北部 |
| ContentType | 20260916172411 |
| 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.
Review the area, threshold and delivery channel in your account.
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