60 km ENE of San Vicente, Mexico

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

1. Northridge, California 1994 M 6.7 350,000× the energy of this one
2. Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
4. This earthquake M 3.0 about 950 lb of TNT

Energy from the Gutenberg–Richter relation (log₁₀E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 31.4812, -115.6344. Map © OpenStreetMap contributors.

Aftershocks so far

60 earthquakes have been recorded within 50 km since this one.

1. 3.3 58 km ENE of San Vicente, Mexico 07:41 UTC
2. 2.2 88km ESE of Maneadero, B.C., MX 11:38 UTC
3. 2.4 55 km ENE of San Vicente, Mexico 01:46 UTC
4. 2.6 56 km ENE of San Vicente, Mexico 01:23 UTC
5. 2.4 90km ESE of Maneadero, B.C., MX 00:04 UTC
6. 2.3 53 km ENE of San Vicente, Mexico 12:16 UTC
7. 2.7 55 km ENE of San Vicente, Mexico 10:31 UTC
8. 2.3 51 km ENE of San Vicente, Mexico 22:15 UTC
9. 2.3 86km ESE of Maneadero, B.C., MX 23:18 UTC
10. 2.5 84km ESE of Maneadero, B.C., MX 13:55 UTC
11. 2.6 89km ESE of Maneadero, B.C., MX 12:03 UTC
12. 2.5 58 km ENE of San Vicente, Mexico 09:35 UTC
13. 3.0 90km ESE of Maneadero, B.C., MX 08:25 UTC
14. 2.3 53 km ENE of San Vicente, Mexico 20:37 UTC
15. 2.8 58 km ENE of San Vicente, Mexico 16:42 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 17:08 UTC. QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

For this area

The largest earthquake within 50 km in our catalogue was M 5.1 on 2020-08-17 — it released about 1,500 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

• The official USGS event page — the source of record for every value above
• Did you feel it? Report it to USGS — reports go to USGS, not to us
• ShakeMap for this event, when USGS has produced one

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.