59 km E of Maneadero, B.C., MX

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 14 km (9 mi) from the epicentre. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

How big was it?

This earthquake released about 49 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

1. Mineral, Virginia 2011 M 5.8 310,000× the energy of this one
2. Magna, Utah 2020 M 5.7 220,000× the energy of this one
3. Around the size people start to feel M 3.0 19× the energy of this one
4. This earthquake M 2.1 about 49 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.

For this area

The largest earthquake within 50 km in our catalogue was M 5.1 on 2020-08-17 — about 30,000 times the energy of this one.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 31.6962, -115.9482. Map © OpenStreetMap contributors.

Aftershocks so far

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

1. 2.3 64 km ENE of San Vicente, Mexico 09:01 UTC
2. 2.4 60 km ENE of San Vicente, Mexico 05:11 UTC
3. 2.0 92 km SSW of Alberto Oviedo Mota, B.C., MX 08:38 UTC
4. 2.3 62 km ENE of San Vicente, Mexico 07:58 UTC
5. 2.0 93 km SSW of Alberto Oviedo Mota, B.C., MX 16:14 UTC
6. 2.2 92 km SSW of Alberto Oviedo Mota, B.C., MX 07:09 UTC
7. 2.8 65 km ENE of San Vicente, Mexico 06:46 UTC
8. 3.2 62 km ENE of San Vicente, Mexico 06:44 UTC
9. 4.2 64 km ENE of San Vicente, Mexico 06:41 UTC
10. 3.0 68 km ENE of San Vicente, Mexico 05:59 UTC
11. 2.4 81 km SSW of Alberto Oviedo Mota, B.C., MX 11:03 UTC
12. 2.4 43 km ENE of Ensenada, B.C., MX 14:05 UTC
13. 2.0 58 km E of Maneadero, B.C., MX 02:20 UTC
14. 2.4 55 km E of Maneadero, B.C., MX 08:46 UTC
15. 2.1 45 km ENE of Ensenada, B.C., MX 03:19 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 15:19 UTC. QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

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.