Earthquake · reviewed by a seismologist
M 2.7md
Earthquake near Talmage, CA
Yes: an earthquake was likely felt in Talmage in the last 24 hours. M 1.5, 3 km (2 mi) NE of Talmage, at 3:26 am PST on 12 November 2026 (11:26 UTC); the estimated shaking in Talmage was intensity II (weak). Every earthquake near Talmage
This page: a magnitude 2.7 earthquake was recorded 2 km (1 mi) north-northwest of Talmage, CA, at 8:02 pm PST on 18 November 2019 (04:02 UTC), 3.7 km deep. 223 people have reported feeling it to USGS.
USGS: 2km NNW of Talmage, CA
89 km (55 mi) NNW of Santa Rosa, CA
- When
- 8:02 pm PST on 18 November 2019 ()
- Where
- 2 km (1 mi) north-northwest of Talmage, CA · earthquakes near Talmage
- Magnitude
- M 2.7 (md)
- Depth
- 3.7 km below the surface
- Felt
- 223 reports · strongest reported intensity IV
- Nearest
- Lake County, 38 km E
- Nearest mapped fault
- Maacama 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 2463 days ago
Earthquake alerts for Talmage, CA
Get a notification in this browser when USGS records an earthquake near Talmage, 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 25 km (16 mi) from the epicentre. In Talmage, 2 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: Ukiah 3 km, intensity III · Boonville 23 km, intensity II · Upper Lake 23 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 380 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 40,000× the energy of this one
- Magna, Utah 2020 M 5.7 29,000× 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 380 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 3,500 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 · 8 km ESE 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 39.1527, -123.1768. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Lake County, CA | 38 km (23 mi) | E | earthquakes near Lake County |
| Mendocino County, CA | 39 km (24 mi) | NW | earthquakes near Mendocino County |
| Sonoma County, CA | 73 km (45 mi) | SSE | earthquakes near Sonoma County |
| Colusa County, CA | 81 km (50 mi) | E | earthquakes near Colusa County |
| Glenn County, CA | 83 km (52 mi) | NE | earthquakes near Glenn County |
| Napa County, CA | 103 km (64 mi) | SE | earthquakes near Napa County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
36 earthquakes have been recorded within 50 km since this one.
- 2.2 13km NW of The Geysers, CA
- 1.6 9km ENE of Brooktrails, CA
- 1.5 13km WNW of The Geysers, CA
- 1.8 7km ESE of Redwood Valley, CA
- 2.3 7km NW of The Geysers, CA
- 1.7 2km WNW of Redwood Valley, CA
- 2.0 2km W of Redwood Valley, CA
- 1.8 2km WNW of Redwood Valley, CA
- 2.8 8km WNW of Cobb, CA
- 1.9 6km NNW of The Geysers, CA
- 2.9 15km N of Lake Pillsbury, CA
- 2.1 7km NW of The Geysers, CA
- 2.0 15km ESE of Navarro Head, CA
- 2.1 2km NNW of Talmage, CA
- 1.9 15km ESE of Navarro Head, 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.