Earthquake · automatic estimate, may change
M 2.2md
Earthquake near Kentfield, CA
No earthquake was likely felt in Kentfield in the 24 hours to 1:58 pm PST (21:58 UTC). The last one was M 1.6, 10 km (6 mi) ENE, at 11:44 am PST on 10 November 2026, estimated intensity II (weak) in town. Every earthquake near Kentfield
This page: a magnitude 2.2 earthquake was recorded 2 km (1 mi) southwest of Kentfield, CA, at 6:52 am PST on 17 February 2026 (14:52 UTC), 16 km deep. 8 people have reported feeling it to USGS. The magnitude and location are an automatic first estimate and may change.
USGS: 2 km SW of Kentfield, CA
22 km (14 mi) NW of San Francisco, CA · 8 km (5 mi) SW of San Rafael, CA
- When
- 6:52 am PST on 17 February 2026 ()
- Where
- 2 km (1 mi) southwest of Kentfield, CA · earthquakes near Kentfield
- Magnitude
- M 2.2 (md)
- Depth
- 16 km below the surface
- Felt
- 8 reports
- Nearest
- Marin County, 20 km NW
- Nearest mapped fault
- San Andreas fault, 8 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 268 days ago
Earthquake alerts for Kentfield, CA
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Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
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. In Kentfield, 2 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: San Rafael 6 km, intensity II · Tamalpais-Homestead Valley 7 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 56 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 270,000× the energy of this one
- Magna, Utah 2020 M 5.7 190,000× the energy of this one
- Around the size people start to feel M 3.0 17× the energy of this one
- This earthquake M 2.2 about 56 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 2,600 times the energy of this one.
Before 2016, the USGS record lists 5 earthquakes of M5 or more within 50 km:
- 7.9 The 1906 San Francisco, California Earthquake · 21 km S of this epicentre
- 6.0 The 2014 South Napa, California Earthquake · 39 km NE of this epicentre
- 5.3 The 1957 San Francisco, California Earthquake · 31 km SSE of this epicentre
- 5.3 3 km E of Bloomfield, California · 47 km NNW of this epicentre
- 5.3 Northern California · 48 km NNW 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 37.9377, -122.5763. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Marin County, CA | 20 km (12 mi) | NW | earthquakes near Marin County |
| San Francisco County, CA | 46 km (29 mi) | WSW | earthquakes near San Francisco County |
| Contra Costa County, CA | 55 km (34 mi) | E | earthquakes near Contra Costa County |
| San Mateo County, CA | 61 km (38 mi) | SSE | earthquakes near San Mateo County |
| Alameda County, CA | 67 km (41 mi) | ESE | earthquakes near Alameda County |
| Solano County, CA | 67 km (41 mi) | ENE | earthquakes near Solano County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
56 earthquakes have been recorded within 50 km since this one.
- 1.6 2 km SE of East Richmond Heights, CA
- 1.6 3 km NW of Hercules, CA
- 1.7 3 km NW of Hercules, CA
- 1.7 2 km SSE of Pacifica, CA
- 2.7 2 km ESE of Pinole, CA
- 1.8 2 km SE of Pacifica, CA
- 1.9 3 km ESE of Berkeley, CA
- 1.9 1 km ESE of Pinole, CA
- 2.3 2 km SE of Pacifica, CA
- 1.7 3 km S of Green Valley, CA
- 2.5 1 km ESE of Pinole, CA
- 2.3 4 km SW of Green Valley, CA
- 2.1 6 km SE of Napa, CA
- 1.5 3 km SSW of San Francisco Zoo, CA
- 2.6 3 km SSW of San Francisco Zoo, CA
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.