Earthquake · automatic estimate, may change
M 2.0md
Earthquake near East Richmond Heights, CA
USGS: 1 km NNW of East Richmond Heights, CA
21 km (13 mi) NNE of San Francisco, CA · in Richmond, CA
- When
- 9:29 am PDT on 1 October 2026 ()
- Where
- in East Richmond Heights, CA · earthquakes near East Richmond Heights
- Magnitude
- M 2.0 (md)
- Depth
- 8.8 km below the surface
- Felt
- no reports yet
- Nearest
- Contra Costa County, 32 km E
- Nearest mapped fault
- Hayward fault, 11 km from its surface trace — near is not the same as on
- Status
- Automatic — a machine’s first estimate, which may change
USGS · last changed by USGS · we first saw it 33 hours ago
A magnitude 2.0 earthquake was recorded in East Richmond Heights, CA, at 9:29 am PDT on 1 October 2026 (16:29 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
Earthquakes near other towns within 30 km: Rollingwood, San Pablo, El Sobrante, Richmond, El Cerrito, Tara Hills.
How big was it?
This earthquake released about 27 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 5.8 560,000× the energy of this one
- Magna, Utah 2020 M 5.7 390,000× the energy of this one
- Around the size people start to feel M 3.0 35× the energy of this one
- This earthquake M 2.0 about 27 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 5,400 times the energy of this one.
Before 2016, the USGS record lists 4 earthquakes of M5 or more within 50 km:
- 7.9 The 1906 San Francisco, California Earthquake · 31 km SW of this epicentre
- 6.0 The 2014 South Napa, California Earthquake · 29 km N of this epicentre
- 5.8 The 1980 Livermore, California Earthquake · 50 km ESE of this epicentre
- 5.3 The 1957 San Francisco, California Earthquake · 35 km SSW of this epicentre
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 37.9542, -122.3162. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Contra Costa County, CA | 32 km (20 mi) | E | earthquakes near Contra Costa County |
| Marin County, CA | 39 km (24 mi) | WNW | earthquakes near Marin County |
| Solano County, CA | 48 km (30 mi) | NE | earthquakes near Solano County |
| Alameda County, CA | 49 km (31 mi) | SE | earthquakes near Alameda County |
| San Mateo County, CA | 60 km (37 mi) | S | earthquakes near San Mateo County |
| Napa County, CA | 61 km (38 mi) | N | earthquakes near Napa County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
1 earthquake has been recorded within 50 km since this one.
Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . 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.