Earthquake · reviewed by a seismologist
M 1.7md
Earthquake near Greenville, CA
No earthquake was likely felt in Greenville in the 24 hours to 5:49 am PST (13:49 UTC). The last one was M 2.3, 18 km (11 mi) SSE, at 5:11 am PST on 7 November 2026, estimated intensity II (weak) in town. Every earthquake near Greenville
This page: a magnitude 1.7 earthquake was recorded 10 km (6 mi) northwest of Greenville, CA, at 10:16 am PDT on 7 April 2026 (17:16 UTC), 9.8 km deep.
USGS: 4 km NE of Canyondam, CA
- When
- 10:16 am PDT on 7 April 2026 ()
- Where
- 10 km (6 mi) northwest of Greenville, CA · earthquakes near Greenville
- Magnitude
- M 1.7 (md)
- Depth
- 9.8 km below the surface
- Felt
- no reports yet
- Nearest
- Plumas County, 29 km SE
- Nearest mapped fault
- Almanor 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 211 days ago
Earthquake alerts for Greenville, CA
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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 7 km (4 mi) from the epicentre. In Greenville, 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: Westwood, Chester, Quincy.
How big was it?
This earthquake released about 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
- Around the size people start to feel M 3.0 89× the energy of this one
- This earthquake M 1.7 about 11 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 5.5 on 2023-05-11 — about 470,000 times the energy of this one.
Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:
- 5.7 2 km NNE of Canyondam, California · 1 km W of this epicentre
- 5.5 15 km NE of Mineral, California · 46 km NW 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 40.1898, -121.0428. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Plumas County, CA | 29 km (18 mi) | SE | earthquakes near Plumas County |
| Lassen County, CA | 68 km (43 mi) | NNE | earthquakes near Lassen County |
| Butte County, CA | 75 km (47 mi) | SW | earthquakes near Butte County |
| Sierra County, CA | 81 km (51 mi) | SSE | earthquakes near Sierra County |
| Tehama County, CA | 101 km (63 mi) | W | earthquakes near Tehama County |
| Nevada County, CA | 102 km (63 mi) | SSE | earthquakes near Nevada County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
55 earthquakes have been recorded within 50 km since this one.
- 2.4 10 km N of Greenhorn, CA
- 2.0 2 km NE of Almanor, CA
- 1.9 3 km NE of Almanor, CA
- 2.3 1 km NNE of Almanor, CA
- 1.9 14 km WSW of Almanor, CA
- 1.7 4 km N of Canyondam, CA
- 2.4 12 km WSW of Chester, CA
- 1.5 12 km WSW of Chester, CA
- 2.3 2 km ENE of Keddie, CA
- 1.6 9 km ENE of Mineral, CA
- 1.8 14 km NNW of Susanville, CA
- 2.0 3 km N of Canyondam, CA
- 1.7 5 km NE of Almanor, CA
- 1.9 3 km NNE of Prattville, CA
- 1.9 14 km NNW of Susanville, 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.