Right now
The most recent data we hold from JMA arrived 2 hours ago, and this point is in it.
One other detection within 20 km in the last 24 hours, 3 km from here.
Reported by JMA today.
It is one of only 4 we have recorded within 20 km of this point since 20 April 2026. The last comparable one was on 22 September 2026. 2 more were recorded here in the fortnight before it.
What the source measured
JMA reported: Earthquake M5.0 near 三陸沖, depth 10 km, reported by the Japan Meteorological Agency.
JMA recorded magnitude 5.0 at a depth of 10 km.
Nearby, since 20 April 2026
- October 1, 2026 · score 17 · 3.4 km
- May 8, 2026 · 5.8 km
- June 15, 2026 · 7.1 km
How we know
3 recorded sources include JMA; independence is not established by this count.
Our own score for this event is 9 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 | Earthquake |
| Severity | Medium |
| Calamity Score (ours) | 9 / 100 |
| Legacy data-support index | 0.70/1 |
| Coordinates | 39.9000, 143.2000 |
| Nearest City | Miyako (111 km) |
| Urban exposure index (PEI) | 0 within 70 km |
| Impact Tier | minor |
| Timestamp | 2026-10-01T17:17:00.000Z |
| Source | https://www.jma.go.jp/bosai/quake/data/20261002022047_20261002021724_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: 2026-10-01T17:17:00.000Z.
First archived: 2026-10-01T17:27:12.570Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
5 retained revisions changed source fields this page does not show; the index, severity and version stayed the same.
Score Breakdown
Technical Details
| Mag | 5 |
| Depth | 10 |
| MaxIntensity | 2 |
| AreaName | 三陸沖 |
| EventId | 20261002021724 |
| Serial | 1 |
| Usgs Mag | 5.1 |
| Usgs Depth | 35 |
| Usgs Tsunami | false |
| Usgs Felt | 1 |
| Usgs Sig | 400 |
| Usgs UsgsIds | ["us6000tyw6"] |
| Emsc Mag | 5.1 |
| Emsc Depth | 35 |
| Emsc MagType | mw |
| Emsc Region | OFF EAST COAST OF HONSHU, JAPAN |
| Emsc Auth | NEIC |
| Emsc SourceId | 2068154 |
| Gfz Mag | 5.26 |
| Gfz Depth | 10 |
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.
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