Earthquake · reviewed by a seismologist
M 1.6md
Earthquake near Cobb, CA
Yes: an earthquake was likely felt in Cobb in the last 24 hours. M 1.6, 4 km (2 mi) W of Cobb, at 6:16 am PST on 12 November 2026 (14:16 UTC); the estimated shaking in Cobb was intensity II (weak). Every earthquake near Cobb
This page: a magnitude 1.6 earthquake was recorded 8 km (5 mi) north of Cobb, CA, at 11:20 pm PST on 14 February 2023 (07:20 UTC), 18 km deep. 1 person has reported feeling it to USGS.
USGS: 8km N of Cobb, CA
49 km (31 mi) N of Santa Rosa, CA · 126 km (79 mi) NNW of San Francisco, CA
- When
- 11:20 pm PST on 14 February 2023 ()
- Where
- 8 km (5 mi) north of Cobb, CA · earthquakes near Cobb
- Magnitude
- M 1.6 (md)
- Depth
- 18 km below the surface
- Felt
- 1 report
- Nearest
- Lake County, 24 km N
- Nearest mapped fault
- Konocti Bay fault, under 1 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 1316 days ago
Earthquake alerts for Cobb, CA
Get a notification in this browser when USGS records an earthquake near Cobb, 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 it was probably too small to be felt, even directly above it. In Cobb, 8 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: Clear Lake Riviera, Lower Lake, Clearlake, Soda Bay, Kelseyville, Clearlake Oaks.
How big was it?
This earthquake released about 7.8 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 1,900,000× 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 3.0 120× the energy of this one
- This earthquake M 1.6 about 7.8 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 5.1 on 2016-08-10 — about 170,000 times the energy of this one.
Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:
- 5.2 6 km ESE of Talmage, California · 41 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 38.8897, -122.7278. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Lake County, CA | 24 km (15 mi) | N | earthquakes near Lake County |
| Sonoma County, CA | 44 km (27 mi) | SSW | earthquakes near Sonoma County |
| Colusa County, CA | 53 km (33 mi) | NE | earthquakes near Colusa County |
| Napa County, CA | 55 km (34 mi) | SE | earthquakes near Napa County |
| Yolo County, CA | 75 km (47 mi) | ESE | earthquakes near Yolo County |
| Glenn County, CA | 84 km (52 mi) | NNE | earthquakes near Glenn County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
52 earthquakes have been recorded within 50 km since this one.
- 3.3 8km NW of The Geysers, CA
- 2.0 7km WNW of The Geysers, CA
- 2.1 8km NW of The Geysers, CA
- 1.7 8km NW of The Geysers, CA
- 2.0 8km NW of The Geysers, CA
- 2.9 5km WNW of The Geysers, CA
- 1.5 5km WNW of The Geysers, CA
- 2.2 3km SE of The Geysers, CA
- 1.6 7km W of Cobb, CA
- 1.8 7km WNW of Cobb, CA
- 1.5 2km NNE of The Geysers, CA
- 1.6 7km WNW of Cobb, CA
- 1.6 8km WNW of The Geysers, CA
- 2.2 10km ESE of Redwood Valley, CA
- 1.8 8km W of Cobb, 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.