LowEarthquakesCS: 3 · v5

Earthquakes 53 km WSW of San Antonio, Chile

ChileCSN CHILE

Right now

The most recent data we hold from CSN CHILE arrived 2 hours ago, and this point is in it.

2 other detections within 20 km in the last 24 hours, the nearest <1 km from here.

Reported by CSN CHILE today.

It is the 2nd strongest of the 6 detections recorded within 20 km of this point since 3 June 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.

What the source measured

CSN CHILE reported: 53 km WSW of San Antonio, Chile

CSN CHILE recorded magnitude 4.3 at a depth of 31 km.

Nearby, since 3 June 2026

How we know

2 recorded sources include CSN CHILE; 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 index0.67/1
Coordinates-33.8294, -72.1057
Nearest CitySan Antonio (53 km)
Urban exposure index (PEI)0 within 30 km
Impact Tierminor
Timestamp2026-09-24T07:07:05.252Z
Sourcehttps://earthquake.usgs.gov/earthquakes/eventpage/us6000tx9m

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: csn_chile. Occurrence: 2026-09-24T07:07:05.252Z.

First archived: 2026-09-24T09:14:31.885Z. 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

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

Technical Details

Mag4.3
Depth31.38
Place53 km WSW of San Antonio, Chile
UsgsIdus6000tx9m
FromUSGSFallbacktrue
Usgs Mag4.3
Usgs Depth31.38
Usgs Tsunamifalse
Usgs Sig284
Emsc Mag4.2
Emsc Depth19
Emsc MagTypeml
Emsc RegionOFFSHORE VALPARAISO, CHILE
Emsc AuthEMSC
Emsc SourceId2064768
MergedSources[{"id":"usgs_us6000tx9m","source":"usgs","severity":"low","severityValue":25.799999999999997,"timestamp":1790233625252,"latitude":-33.8294,"longitude":-72.1057},{"id":"emsc_20260924_0000078","source":"emsc","severity":"low","severityValue":25.200000000000003,"timestamp":1790233625230,"latitude":-33.8194,"longitude":-71.9805}]

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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