Earthquake · reviewed by a seismologist
M 1.6md
Earthquake near Esparto, CA
No earthquake was likely felt in Esparto in the 24 hours to 4:21 am PST (12:21 UTC). The last one was M 4.2, 80 km (50 mi) W, at 7:40 pm PDT on 28 July 2026, estimated intensity II (weak) in town; 240 felt reports to USGS. Every earthquake near Esparto
This page: a magnitude 1.6 earthquake was recorded 10 km (6 mi) west of Esparto, CA, at 4:01 pm PDT on 26 May 2017 (23:01 UTC), 11 km deep.
USGS: 10 km W of Esparto, California
60 km (37 mi) WNW of Sacramento, CA · 33 km (21 mi) W of Woodland, CA
- When
- 4:01 pm PDT on 26 May 2017 ()
- Where
- 10 km (6 mi) west of Esparto, CA · earthquakes near Esparto
- Magnitude
- M 1.6 (md)
- Depth
- 11 km below the surface
- Felt
- no reports yet
- Nearest
- Yolo County, 20 km E
- Nearest mapped fault
- Great Valley thrust fault system, 4 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 3456 days ago
Earthquake alerts for Esparto, 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 3 km (2 mi) from the epicentre. In Esparto, 10 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: Cottonwood, Monument Hills, Winters, Dunnigan.
How big was it?
This earthquake released about 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
- Around the size people start to feel M 3.0 130× the energy of this one
- This earthquake M 1.6 about 7.6 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
No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.
Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:
- 5.4 South of Elmira, California · 49 km SSE 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 38.7013, -122.1317. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Yolo County, CA | 20 km (12 mi) | E | earthquakes near Yolo County |
| Napa County, CA | 27 km (17 mi) | SW | earthquakes near Napa County |
| Solano County, CA | 51 km (32 mi) | SSE | earthquakes near Solano County |
| Sutter County, CA | 53 km (33 mi) | NE | earthquakes near Sutter County |
| Colusa County, CA | 54 km (33 mi) | N | earthquakes near Colusa County |
| Lake County, CA | 70 km (43 mi) | NW | earthquakes near Lake County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
47 earthquakes have been recorded within 50 km since this one.
- 1.9 5km W of Calistoga, CA
- 1.8 7km SSW of Calistoga, CA
- 2.0 2km ENE of Saint Helena, CA
- 2.1 5km WSW of Yountville, CA
- 1.9 16km ENE of Hidden Valley Lake, CA
- 1.8 4km ENE of Lower Lake, CA
- 2.1 7 km ENE of Fetters Hot Springs-Agua Caliente, California
- 1.7 11 km NE of Oakville, California
- 1.6 12 km ESE of Hidden Valley Lake, California
- 1.8 16 km NNW of Moskowite Corner, California
- 1.6 11 km ESE of Hidden Valley Lake, California
- 2.0 6 km SSW of Yountville, California
- 1.9 8 km ENE of Hidden Valley Lake, California
- 1.5 4 km SSW of Oakville, California
- 2.5 14 km NNW of Moskowite Corner, California
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.