Earthquake near Concord, CA

Yes. A magnitude 2.0 earthquake was recorded 6 km (4 mi) NNW of Concord, CA, at 5:11 pm PDT on 14 September 2016 (00:11 UTC), 7.8 km deep. 7 people have reported feeling it to USGS.

This was on 14 September 2016. The latest near Concord: M 3.0 on 14 September 2026.

USGS: 2 km W of Clyde, California

8 km (5 mi) NW of Concord, CA · 42 km (26 mi) NE of San Francisco, CA

5:11 pm PDT, Sep 14, 2016 · 2016-09-15 00:11 UTC · 7.8 km deep · released about 33 lb of TNT

Every earthquake near Concord Felt it? Tell USGS Check my area

Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.

When: 5:11 pm PDT on 14 September 2016 (2016-09-15 00:11 UTC)
Where: 6 km (4 mi) NNW of Concord, CA · earthquakes near Concord
Magnitude: M 2.0 (md)
Depth: 7.8 km below the surface
Felt: 7 reports · strongest reported intensity III
Nearest: Contra Costa County, 15 km SE
Nearest mapped fault: Concord fault, 2 km from its surface trace — near is not the same as on
Status: Reviewed by a seismologist

USGS · last changed by USGS 3531 days ago · we first saw it 3531 days ago

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. In Concord, 6 km away, the estimate is intensity II (weak). 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: Pacheco 5 km, intensity II · Concord 6 km, intensity II · Martinez 7 km, intensity II · Bay Point 8 km, intensity II · Pleasant Hill 9 km, intensity II · Benicia 9 km, intensity II · Walnut Creek 13 km, intensity II · Crockett 14 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 33 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 450,000× the energy of this one
Magna, Utah 2020 M 5.7 320,000× the energy of this one
Around the size people start to feel M 3.0 29× the energy of this one
This earthquake M 2.0 about 33 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 5 earthquakes of M5 or more within 50 km:

6.0 The 2014 South Napa, California Earthquake · 31 km NW of this epicentre Aug 24, 2014
5.8 The 1980 Livermore, California Earthquake · 33 km SE of this epicentre Jan 24, 1980
5.4 South of Elmira, California · 33 km NNE of this epicentre May 19, 1902
5.4 9 km NE of Livermore, California · 43 km SE of this epicentre Jan 27, 1980
5.1 11 km E of Blackhawk, California · 34 km SE 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

Map loads when it scrolls into view

Nearby places

Place	Distance	Direction from the epicentre
Contra Costa County, CA	15 km (9 mi)	SE	earthquakes near Contra Costa County
Solano County, CA	29 km (18 mi)	NNE	earthquakes near Solano County
Alameda County, CA	44 km (27 mi)	SSE	earthquakes near Alameda County
Napa County, CA	58 km (36 mi)	NNW	earthquakes near Napa County
Marin County, CA	61 km (38 mi)	W	earthquakes near Marin County
San Joaquin County, CA	69 km (43 mi)	E	earthquakes near San Joaquin County

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

Aftershocks so far

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

1.9 3 km SE of North Gate, California 17:02 UTC
2.1 3 km SW of Moskowite Corner, California 01:13 UTC
2.7 6 km WSW of Moskowite Corner, California 22:53 UTC
1.6 1 km SW of Blackhawk, California 12:11 UTC
2.1 0 km SW of Blackhawk, California 08:11 UTC
1.5 1 km SW of Blackhawk, California 07:54 UTC
2.4 2 km SSE of Berkeley, California 02:26 UTC
1.6 0 km SW of Blackhawk, California 01:37 UTC
1.9 4 km WSW of Moskowite Corner, California 03:03 UTC
1.9 1 km WSW of Concord, California 21:10 UTC
1.6 1 km NW of Acalanes Ridge, California 13:43 UTC
1.5 1 km NNW of Piedmont, California 10:45 UTC
2.2 0 km NW of Piedmont, California 10:20 UTC
2.3 1 km NW of Piedmont, California 10:20 UTC
1.6 3 km SSW of Alamo, California 06:43 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 10:01 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.