M4.4 earthquake 53 km WSW of Santo Domingo, Valparaiso, Chile

A magnitude 4.4 earthquake struck 53 km WSW of Santo Domingo, Valparaiso, Chile at 04:07 local time (07:07 UTC) on 24 Sept 2026, at a depth of 27 km, according to USGS and GFZ.

Reported by 2 agencies · revised from M4.3

Data: USGS, GFZ · updated 2026-10-07 09:30 UTC · reviewed

Magnitude: 4.4light
body-wave magnitude (mb)
revised from 4.3
Depth: 26.7 km
Status: Reviewed
Origin time: 2026-09-24 07:07:04 UTC; Local: 24 Sept 2026, 04:07:04 (America/Santiago)
Epicentre: 33.853° S, 72.146° W

Circles show this event and others within 30 km from 7 days before to 30 days after. Lines: plate boundaries and GEM active faults. Open on the live map

Nearby places

Distance and estimated shaking at nearby places
Place	Distance	Est. shaking
Santo DomingoValparaiso, Chile · pop. 6,696	53 km	IIIWeak
San AntonioValparaiso, Chile · pop. 87,675	58 km	IIIWeak
MelipillaSantiago Metropolitan, Chile · pop. 63,100	87 km	IIWeak
CasablancaValparaiso, Chile · pop. 24,537	91 km	IIWeak
ValparaísoValparaiso, Chile · pop. 282,448	102 km	IIWeak
Viña del MarValparaiso, Chile · pop. 334,248	108 km	IIWeak
MaipúSantiago Metropolitan, Chile · pop. 503,635	133 km	IIWeak
SantiagoSantiago Metropolitan, Chile · pop. 4,837,295	145 km	INot felt

Shaking is an estimate from the intensity prediction equation of Allen, Wald & Worden (2012), not an observation. Local ground and buildings can change it by a level or more. Likely felt out to about 61 km.

Every agency's solution

Agencies locate earthquakes with their own stations and methods, so their numbers differ. We match reports of the same event by time, distance and magnitude and show them side by side. The headline uses USGS, which has been reviewed by an analyst.

Agency	Magnitude	Depth	Epicentre	Time offset	Status
GFZGFZ via GEOFON, GFZ Helmholtz Centre for Geosciences	4.3 ML	10 km	33.85° S, 72.17° W	−1.2 s	Automatic
USGSheadlineUSGS NEIC via U.S. Geological Survey	4.4 mbwas 4.3	26.7 km	33.85° S, 72.15° W	–	Reviewed · 1 revision

How big was it?

Widely felt near the epicentre: rattling windows and objects. Significant damage is unlikely.

It released roughly the energy of 60 t of TNT. Magnitude is logarithmic: each whole step means about 32 times more energy and 10 times larger waves on a seismogram. Depth matters too: at 27 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

Compare M4.4 with M3.4

M4.4 releases about 32× the energy of M3.4, and its waves are about 10× taller on a seismogram. Energy: 60 t of TNT vs 1.9 t of TNT.

Each square is the energy of one M3.4. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

1 later earthquake within 30 km; the largest was M5.2 11 days ago. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M4.4

1 later earthquake nearby. Aftershock rates typically fall off roughly as 1/time (Omori's law).

Aftershocks
Time after mainshock (hours)	Magnitude	Depth (km)
32.37	5.2	19

5.247 km NNW of Pichilemu, O'Higgins Region, Chile09-25 15:29

Did you feel it?

Reports from people help show where shaking was strong. They are anonymous and shown here in aggregate.

Reports on SeismoAtlas

No reports yet.

Event id gfz2026ssnx. First recorded here 28 Sept 2026, 17:32:06 UTC. Solutions: GFZ (geofon:gfz2026ssnx); USGS (usgs:us6000tx9m). Cite as: SeismoAtlas, “M4.4 earthquake 53 km WSW of Santo Domingo, Valparaiso, Chile”, https://seismoatlas.com/earthquake/gfz2026ssnx-m4-4-earthquake-53-km-wsw-of-santo-domingo-valparaiso-chile, data from USGS, GFZ.

JSON: /api/v1/events/gfz2026ssnx. SeismoAtlas is not an official warning service.