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SeismoAtlas

M4.1 earthquake – Nevada

A magnitude 4.1 earthquake struck in the Nevada region at 00:01 local time (07:01 UTC) on 27 Sept 2026, at a depth of 6 km, according to USGS and GFZ.

Reported by 2 agencies · revised from M4.4 · 7 reports to USGS “Did You Feel It?”

Data: USGS, GFZ · updated 2026-09-28 07:06 UTC · reviewed

Magnitude
4.1light
moment magnitude (regional) (mwr)
revised from 4.4
Depth
6 km
Status
Reviewed
Origin time
2026-09-27 07:01:41 UTC
Local: 27 Sept 2026, 00:01:41 (America/Los Angeles)
Epicentre
38.932° N, 115.308° 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
PlaceDistanceEst. shaking
Las VegasNevada, United States · pop. 641,903307 kmINot felt
HendersonNevada, United States · pop. 285,667323 kmINot felt
RenoNevada, United States · pop. 264,165393 kmINot 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 47 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 · NN, which has been reviewed by an analyst.

AgencyMagnitudeDepthEpicentreTime offsetStatus
GFZGFZ via GEOFON, GFZ Helmholtz Centre for Geosciences4.4 mb10 km38.97° N, 115.57° W+0.6 sAutomatic
USGS · NNheadlineNevada Seismological Laboratory via U.S. Geological Survey4.1 mwr6 km38.93° N, 115.31° W–Reviewed

How big was it?

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

It released roughly the energy of 19 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 6 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M4.1 releases about 29× the energy of M3.1, and its waves are about 9.3× taller on a seismogram. Energy: 19 t of TNT vs 674 kg of TNT.

Each square is the energy of one M3.1. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

7 later earthquakes within 30 km; the largest was M4.1 1 day ago. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M4.1

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
0.193.04
0.293.36
1.402.64
1.611.86
1.874.16
6.912.03
22.863.30
  1. 4.1Preston, Nevada09-27 08:54
  2. 3.3Preston, Nevada09-27 07:18
  3. 3.3Preston, Nevada09-28 05:53
  4. 3.0Preston, Nevada09-27 07:12
  5. 2.6Preston, Nevada09-27 08:25
  6. 2.0Preston, Nevada09-27 13:56
  7. 1.8Preston, Nevada09-27 08:38

Did you feel it?

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

How strong was the shaking where you were?

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Reports on SeismoAtlas

No reports yet.

USGS “Did You Feel It?” has 7 reports: add yours at USGS.

Event id gfz2026syag. First recorded here 28 Sept 2026, 17:32:06 UTC. Solutions: GFZ (geofon:gfz2026syag); USGS · NN (usgs:nn00924930). Cite as: SeismoAtlas, “M4.1 earthquake – Nevada”, https://seismoatlas.com/earthquake/gfz2026syag-m4-1-earthquake-nevada, data from USGS, GFZ.

JSON: /api/v1/events/gfz2026syag. SeismoAtlas is not an official warning service.