Earthquake near San Leandro, CA

A magnitude 1.6 earthquake was recorded 2 km (1 mi) ENE of San Leandro, CA, at 11:13 am PST on 3 January 2017 (19:13 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Ashland, Castro Valley, Cherryland, San Lorenzo, Hayward, Fairview.

How big was it?

This earthquake released about 7.3 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

1. Mineral, Virginia 2011 M 5.8 2,100,000× the energy of this one
2. Magna, Utah 2020 M 5.7 1,500,000× the energy of this one
3. Around the size people start to feel M 3.0 130× the energy of this one
4. This earthquake M 1.6 about 7.3 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 7 earthquakes of M5 or more within 50 km; the five largest:

1. 7.9 The 1906 San Francisco, California Earthquake · 37 km W of this epicentre Apr 18, 1906
2. 5.8 The 1980 Livermore, California Earthquake · 34 km ENE of this epicentre Jan 24, 1980
3. 5.7 15 km NE of East Foothills, California · 48 km SE of this epicentre Mar 31, 1986
4. 5.5 6 km NNE of East Foothills, California · 46 km SE of this epicentre Oct 31, 2007
5. 5.4 9 km NE of Livermore, California · 37 km E of this epicentre Jan 27, 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 37.7310, -122.1308. Map © OpenStreetMap contributors.

Nearby places

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

Aftershocks so far

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

1. 2.8 Northern California 12:14 UTC
2. 1.6 6 km NE of East Foothills, California 12:04 UTC
3. 1.6 3 km NE of Vallejo, California 01:37 UTC
4. 1.8 10 km NNE of East Foothills, California 17:42 UTC
5. 1.7 1 km W of Diablo, California 03:12 UTC
6. 2.0 5 km WSW of Martinez, California 00:59 UTC
7. 1.7 1 km N of Pacifica, California 18:52 UTC
8. 1.7 4 km S of Pittsburg, California 21:01 UTC
9. 1.5 1 km S of Livermore, California 08:07 UTC
10. 2.1 8 km N of East Foothills, California 09:07 UTC
11. 2.8 8 km SE of Livermore, California 19:25 UTC
12. 1.6 2 km ESE of Waldon, California 01:52 UTC
13. 1.8 9 km SW of Brentwood, California 18:32 UTC
14. 2.2 1 km ENE of Pacifica, California 05:34 UTC
15. 1.5 0 km NW of Concord, California 04:42 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 03:24 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.