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M4.2 earthquake 19 km WNW of Chaparral, Tolima Department, Colombia

A magnitude 4.2 earthquake struck 19 km WNW of Chaparral, Tolima Department, Colombia at 22:57 local time (03:57 UTC) on 24 Sept 2026, at a depth of 10 km, according to USGS.

Data: USGS · updated 2026-10-01 23:08 UTC · reviewed

Magnitude
4.2light
body-wave magnitude (mb)
Depth
10 km
Status
Reviewed
Origin time
2026-09-25 03:57:06 UTC
Local: 24 Sept 2026, 22:57:06 (America/Bogota)
Epicentre
3.758° N, 75.650° W

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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
PlaceDistanceEst. shaking
ChaparralTolima Department, Colombia · pop. 19,98219 kmIVLight
RioblancoTolima Department, Colombia · pop. 19,09025 kmIIIWeak
PlanadasTolima Department, Colombia · pop. 21,55762 kmIIWeak
NatagaimaTolima Department, Colombia · pop. 22,45564 kmIIWeak
SevillaValle del Cauca Department, Colombia · pop. 43,73865 kmIIWeak
CaicedoniaValle del Cauca Department, Colombia · pop. 32,41767 kmIIWeak
PalmiraValle del Cauca Department, Colombia · pop. 312,51976 kmIIWeak
ArmeniaQuindío Department, Colombia · pop. 304,31487 kmIIWeak

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 53 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.

AgencyMagnitudeDepthEpicentreTime offsetStatus
USGSheadlineUSGS NEIC via U.S. Geological Survey4.2 mb10 km3.76° N, 75.65° W–Reviewed

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How big was it?

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

It released roughly the energy of 30 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 10 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M4.2 releases about 32× the energy of M3.2, and its waves are about 10× taller on a seismogram. Energy: 30 t of TNT vs 951 kg of TNT.

Each square is the energy of one M3.2. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

3 later earthquakes within 30 km; the largest was M4.5 2 days ago. 11 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M4.2

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
3.384.557
76.714.310
113.894.510
  1. 4.515 km SW of San Antonio, Tolima Department, Colombia09-29 21:50
  2. 4.526 km NNW of Rioblanco, Tolima Department, Colombia09-25 07:19
  3. 4.327 km WNW of Chaparral, Tolima Department, Colombia09-28 08:39

Did you feel it?

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Reports on SeismoAtlas

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Event id us6000txif. First recorded here 1 Oct 2026, 23:32:16 UTC. Solutions: USGS (usgs:us6000txif). Cite as: SeismoAtlas, “M4.2 earthquake 19 km WNW of Chaparral, Tolima Department, Colombia”, https://seismoatlas.com/earthquake/us6000txif-m4-2-earthquake-19-km-wnw-of-chaparral-tolima-department-colombia, data from USGS.

JSON: /api/v1/events/us6000txif. SeismoAtlas is not an official warning service.