Calamity
LowEarthquakesCS: 1 · v5

Earthquakes in Japan

JapanJMA

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 strongest of the 5 detections recorded within 20 km of this point since 17 June 2026. The last comparable one was on 13 September 2026. 3 more were recorded here in the fortnight before it.

What the source measured

JMA reported: 20260914195801

Nearby, since 17 June 2026

How we know

2 recorded sources include JMA; independence is not established by this count.

Our own score for this event is 1 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

TypeEarthquakes
SeverityLow
Calamity Score (ours)1 / 100
Legacy data-support index0.67/1
Coordinates38.5000, 142.5000
Nearest CityKesennuma (91 km)
Urban exposure index (PEI)0 within 30 km
Impact Tierminor
Timestamp2026-09-14T10:55:00.000Z
Sourcehttps://www.jma.go.jp/bosai/quake/20260914195801_20260914195516_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: 2026-09-14T10:55:00.000Z.

First archived: 2026-09-14T13:24:35.823Z. Material modification: not recorded.

Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.

Score Breakdown

2
intensity
0
Urban PEI term
0
Scenario weight
1
Recorded reference / batch anomaly

Technical Details

Mag4.1
MaxIntensity2
AreaName宮城県沖
ContentType20260914195801
Serial1
Emsc Mag4.1
Emsc Depth30
Emsc MagTypem
Emsc RegionNEAR EAST COAST OF HONSHU, JAPAN
Emsc AuthJMA
Emsc SourceId2060168
MergedSources[{"id":"emsc_20260914_0000140","source":"emsc","severity":"low","severityValue":24.599999999999998,"timestamp":1789383330000,"latitude":38.2,"longitude":142.1}]

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.

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