Earthquake · reviewed by a seismologist
M 1.5md
Earthquake near Green Valley, CA
No earthquake was likely felt in Green Valley in the 24 hours to 2:32 pm PST (22:32 UTC). The last one was M 1.8, 13 km (8 mi) S, at 11:09 am PST on 4 November 2026, estimated intensity II (weak) in town. Every earthquake near Green Valley
This page: a magnitude 1.5 earthquake was recorded 2 km (1 mi) north-northwest of Green Valley, CA, at 11:55 am PST on 24 January 2022 (19:55 UTC), 6.4 km deep.
USGS: 2km NNW of Green Valley, CA
12 km (7 mi) ESE of Napa, CA · 59 km (37 mi) NNE of San Francisco, CA
- When
- 11:55 am PST on 24 January 2022 ()
- Where
- 2 km (1 mi) north-northwest of Green Valley, CA · earthquakes near Green Valley
- Magnitude
- M 1.5 (md)
- Depth
- 6.4 km below the surface
- Felt
- no reports yet
- Nearest
- Solano County, 20 km E
- Nearest mapped fault
- Green Valley fault, 3 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 1753 days ago
Earthquake alerts for Green Valley, CA
Get a notification in this browser when USGS records an earthquake near Green Valley, 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 8 km (5 mi) from the epicentre. In Green Valley, 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.
Earthquakes near other towns within 30 km: Napa, Fairfield, Suisun, American Canyon, Vacaville, Vallejo.
How big was it?
This earthquake released about 5.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,700,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
- Around the size people start to feel M 3.0 170× the energy of this one
- This earthquake M 1.5 about 5.6 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 27,000 times the energy of this one.
Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:
- 6.0 The 2014 South Napa, California Earthquake · 14 km WSW of this epicentre
- 5.4 South of Elmira, California · 24 km E 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 38.2705, -122.1710. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Solano County, CA | 20 km (13 mi) | E | earthquakes near Solano County |
| Napa County, CA | 30 km (18 mi) | NNW | earthquakes near Napa County |
| Contra Costa County, CA | 44 km (27 mi) | SSE | earthquakes near Contra Costa County |
| Yolo County, CA | 51 km (32 mi) | NNE | earthquakes near Yolo County |
| Marin County, CA | 56 km (35 mi) | WSW | earthquakes near Marin County |
| Sonoma County, CA | 72 km (45 mi) | WNW | earthquakes near Sonoma County |
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.
- 1.7 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
- 1.8 6km NNW of Bay Point, CA
- 1.9 5km NNW of Bay Point, CA
- 1.7 6km NNW of Bay Point, CA
- 4.1 7km NW of Bay Point, CA
- 2.3 14km ESE of Angwin, CA
- 2.1 1km E of Piedmont, CA
- 1.6 13km ESE of Angwin, CA
- 1.6 8km ENE of Vallejo, CA
- 1.8 6km W of Glen Ellen, 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.