Calamity
LowEarthquakesCS: 3 · v5

Earthquakes in South of the Fiji Islands

USGS

Right now

The most recent data we hold from USGS arrived 35 minutes ago, and this point is in it.

Nothing else has been detected within 20 km in the last 24 hours.

Reported by USGS today.

It is the only one we have recorded within 20 km of this point since 22 September 2026.

What the source measured

USGS reported: south of the Fiji Islands

USGS recorded magnitude 4.3 at a depth of 431 km.

How we know

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

Our own score for this event is 3 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)3 / 100
Legacy data-support index0.68/1
Coordinates-26.3979, -179.3736
Nearest CityNuku‘alofa (722 km)
Urban exposure index (PEI)0 within 30 km
Impact Tierminor
Timestamp2026-09-22T10:00:31.232Z
Sourcehttps://earthquake.usgs.gov/earthquakes/eventpage/us7000tj4r

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: usgs. Occurrence: 2026-09-22T10:00:31.232Z.

First archived: 2026-09-22T13:13:39.976Z. Material modification: not recorded.

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

  1. 2026-09-22T14:29:20.660Z · data_change

    Index 33; severity lowlow; version 55.

  2. 2026-09-22T14:02:12.484Z · data_change

    Index 33; severity lowlow; version 55.

Score Breakdown

6
intensity
0
Urban PEI term
0
Scenario weight
3
Recorded reference / batch anomaly

Technical Details

Mag4.3
Depth431.37
Tsunamifalse
Sig284
Emsc Mag4.3
Emsc Depth431.4
Emsc MagTypemb
Emsc RegionSOUTH OF FIJI ISLANDS
Emsc AuthNEIC
Emsc SourceId2063954
MergedSources[{"id":"emsc_20260922_0000224","source":"emsc","severity":"low","severityValue":25.799999999999997,"timestamp":1790071231232,"latitude":-26.3979,"longitude":-179.3736}]

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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