Earthquake · reviewed by a seismologist
M 1.8md
Earthquake near American Canyon, CA
No earthquake was likely felt in American Canyon in the 24 hours to 11:49 am PST (19:49 UTC). The last one was M 1.8, 8 km (5 mi) ESE, at 11:09 am PST on 4 November 2026, estimated intensity II (weak) in town. Every earthquake near American Canyon
This page: a magnitude 1.8 earthquake was recorded 3 km (2 mi) west of American Canyon, CA, at 12:18 am PST on 13 March 2022 (08:18 UTC), 8.9 km deep. 2 people have reported feeling it to USGS.
USGS: 3km W of American Canyon, CA
8 km (5 mi) NNW of Vallejo, CA · 46 km (28 mi) NNE of San Francisco, CA
- When
- 12:18 am PST on 13 March 2022 ()
- Where
- 3 km (2 mi) west of American Canyon, CA · earthquakes near American Canyon
- Magnitude
- M 1.8 (md)
- Depth
- 8.9 km below the surface
- Felt
- 2 reports · strongest reported intensity IV
- Nearest
- Solano County, 33 km ENE
- Nearest mapped fault
- West Napa fault, 5 km from its surface trace — near is not the same as on
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1703 days ago
Earthquake alerts for American Canyon, CA
Get a notification in this browser when USGS records an earthquake near American Canyon, CA. No account or email needed.
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 10 km (6 mi) from the epicentre. In American Canyon, 3 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: Vallejo 9 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 14 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
- Magna, Utah 2020 M 5.7 790,000× the energy of this one
- Around the size people start to feel M 3.0 70× the energy of this one
- This earthquake M 1.8 about 14 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 11,000 times the energy of this one.
Before 2016, the USGS record lists 4 earthquakes of M5 or more within 50 km:
- 6.0 The 2014 South Napa, California Earthquake · 4 km NNW of this epicentre
- 5.4 South of Elmira, California · 37 km ENE of this epicentre
- 5.3 3 km E of Bloomfield, California · 47 km WNW of this epicentre
- 5.3 Northern California · 49 km WNW 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 38.1778, -122.2940. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Solano County, CA | 33 km (20 mi) | ENE | earthquakes near Solano County |
| Napa County, CA | 37 km (23 mi) | N | earthquakes near Napa County |
| Contra Costa County, CA | 42 km (26 mi) | SE | earthquakes near Contra Costa County |
| Marin County, CA | 42 km (26 mi) | WSW | earthquakes near Marin County |
| Yolo County, CA | 65 km (41 mi) | NNE | earthquakes near Yolo County |
| Sonoma County, CA | 67 km (42 mi) | NW | earthquakes near Sonoma County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
46 earthquakes have been recorded within 50 km since this one.
- 1.9 7km NNE of Penngrove, CA
- 1.6 3km E of Oakland, CA
- 1.6 5km E of Vallejo, CA
- 1.6 6km ESE of Penngrove, CA
- 1.5 6km NE of Santa Rosa, CA
- 1.5 12km E of Yountville, CA
- 2.2 6km ESE of Penngrove, CA
- 1.6 9km NNE of Benicia, CA
- 1.9 1km W of Martinez, CA
- 1.7 5km SSW of Calistoga, CA
- 1.6 2km NNE of Pleasant Hill, CA
- 1.9 7km NW of Bay Point, CA
- 1.8 7km NW of Bay Point, CA
- 2.0 6km NW of Bay Point, CA
- 2.2 7km NW of Bay Point, 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.