Earthquake near Berkeley, CA

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 8 km (5 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.

Likely felt in: Berkeley in town, intensity II · Orinda 7 km, intensity II · El Cerrito 7 km, intensity II · Oakland 8 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 9.3 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 1,600,000× the energy of this one
2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
3. Around the size people start to feel M 3.0 100× the energy of this one
4. This earthquake M 1.7 about 9.3 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 since 2016 was M 4.5 on 2019-10-15 — about 16,000 times the energy of this one.

Before 2016, the USGS record lists 5 earthquakes of M5 or more within 50 km:

1. 7.9 The 1906 San Francisco, California Earthquake · 29 km WSW of this epicentre Apr 18, 1906
2. 6.0 The 2014 South Napa, California Earthquake · 38 km N of this epicentre Aug 24, 2014
3. 5.8 The 1980 Livermore, California Earthquake · 43 km E of this epicentre Jan 24, 1980
4. 5.3 The 1957 San Francisco, California Earthquake · 31 km SW of this epicentre Mar 22, 1957
5. 5.1 11 km E of Blackhawk, California · 43 km E of this epicentre Jan 24, 1980

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 37.8733, -122.2538. Map © OpenStreetMap contributors.

Nearby places

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

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

1. 1.6 5km SW of Clayton, CA 09:23 UTC
2. 1.6 6km E of Vallejo, CA 19:32 UTC
3. 2.1 3km WNW of Crockett, CA 17:20 UTC
4. 1.6 4km SSW of San Francisco Zoo, CA 05:36 UTC
5. 2.1 4km WSW of Alamo, CA 00:32 UTC
6. 2.1 6km SSW of Moraga, CA 08:21 UTC
7. 1.9 5km SW of Pacheco, CA 14:33 UTC
8. 1.8 2km SE of Pacheco, CA 00:53 UTC
9. 1.6 1km S of Blackhawk, CA 16:56 UTC
10. 1.8 5km SW of San Francisco Zoo, CA 20:51 UTC
11. 1.5 3km N of San Leandro, CA 20:34 UTC
12. 3.4 3km N of San Leandro, CA 19:22 UTC
13. 3.0 3km N of San Leandro, CA 02:15 UTC
14. 2.1 2km E of Hayward, CA 16:39 UTC
15. 2.7 1km SSE of Vallejo, CA 07:04 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 09:46 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.