77km SE 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 9 km (6 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 12 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

1. Mineral, Virginia 2011 M 5.8 1,300,000× the energy of this one
2. Magna, Utah 2020 M 5.7 900,000× the energy of this one
3. Around the size people start to feel M 3.0 80× the energy of this one
4. This earthquake M 1.7 about 12 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 120,000 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 31.2720, -115.9470. Map © OpenStreetMap contributors.

Aftershocks so far

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

1. 2.6 30 km E of San Vicente, Mexico 09:10 UTC
2. 2.7 76km ESE of Maneadero, B.C., MX 19:17 UTC
3. 3.0 91km SSW of Alberto Oviedo Mota, B.C., MX 02:33 UTC
4. 3.2 91km ESE of Maneadero, B.C., MX 02:26 UTC
5. 2.6 84km SE of Maneadero, B.C., MX 09:46 UTC
6. 2.8 110km ESE of Maneadero, B.C., MX 19:39 UTC
7. 2.5 53 km ENE of San Vicente, Mexico 07:16 UTC
8. 3.8 60km E of Maneadero, B.C., MX 05:38 UTC
9. 2.3 62km E of Maneadero, B.C., MX 13:47 UTC
10. 3.1 80km ESE of Maneadero, B.C., MX 06:58 UTC
11. 2.7 86km SE of Maneadero, B.C., MX 16:06 UTC
12. 2.1 53km E of Maneadero, B.C., MX 22:05 UTC
13. 3.0 103km ESE of Maneadero, B.C., MX 07:46 UTC
14. 3.2 56km ESE of Maneadero, B.C., MX 06:33 UTC
15. 2.4 52 km ENE of San Vicente, Mexico 06:29 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 17:32 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.