Earthquake · automatic estimate, may change
M 2.7md
Earthquake near Portola, CA
Yes. A magnitude 2.7 earthquake was recorded 8 km (5 mi) north of Portola, CA, at 8:16 am PST on 10 November 2026 (16:16 UTC), less than 1 km deep. 9 people have reported feeling it to USGS. The magnitude and location are an automatic first estimate and may change.
USGS: 1 km N of Lake Davis, CA
65 km (40 mi) NW of Reno, NV
- When
- 8:16 am PST on 10 November 2026 ()
- Where
- 8 km (5 mi) north of Portola, CA · earthquakes near Portola
- Magnitude
- M 2.7 (md)
- Depth
- -1.4 km below the surface
- Felt
- 9 reports · strongest reported intensity III
- Nearest
- Plumas County, 33 km WNW
- Nearest mapped fault
- Mohawk Valley fault, 17 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 22 hours ago
Earthquake alerts for Portola, CA
Get a notification in this browser when USGS records an earthquake near Portola, 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 small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.
At this magnitude and depth, people at rest would likely notice it out to about 26 km (16 mi) from the epicentre. In Portola, 8 km away, the estimate is intensity III (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: Portola 8 km, intensity III. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 390 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 39,000× the energy of this one
- Magna, Utah 2020 M 5.7 28,000× the energy of this one
- Around the size people start to feel M 3.0 2.5× the energy of this one
- This earthquake M 2.7 about 390 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 4.7 on 2021-05-07 — about 730 times the energy of this one.
Before 2016, the USGS record lists 5 earthquakes of M5 or more within 50 km:
- 6.0 6 km WNW of Verdi, California · 50 km SE of this epicentre
- 5.6 6 km NNE of Doyle, California · 41 km ENE of this epicentre
- 5.6 5 km NE of Loyalton, California · 29 km SE of this epicentre
- 5.3 4 km S of Doyle, California · 33 km ENE of this epicentre
- 5.2 3 km N of Blairsden, California · 14 km WSW 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 39.8785, -120.4727. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Plumas County, CA | 33 km (20 mi) | WNW | earthquakes near Plumas County |
| Sierra County, CA | 34 km (21 mi) | S | earthquakes near Sierra County |
| Nevada County, CA | 69 km (43 mi) | SSW | earthquakes near Nevada County |
| Placer County, CA | 93 km (58 mi) | SSW | earthquakes near Placer County |
| Lassen County, CA | 94 km (58 mi) | N | earthquakes near Lassen County |
| Storey County, NV | 95 km (59 mi) | ESE | earthquakes near Storey County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
No further earthquakes have been recorded within 50 km since this one.
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.
Revisions
USGS refines a solution as more stations report. Every change we have seen is listed here.
| What changed | From | To | When |
|---|---|---|---|
| felt reports | 8 | 9 | |
| felt reports | 7 | 8 | |
| felt reports | 6 | 7 | |
| felt reports | 5 | 6 | |
| felt reports | 4 | 5 | |
| reported intensity | 2 | 3.1 | |
| felt reports | 1 | 4 | |
| reported intensity | not reported | 2 | |
| felt reports | not reported | 1 |
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.