QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

Earthquake near Talmage, CA

Yes: an earthquake was likely felt in Talmage in the last 24 hours. M 1.5, 10 km (6 mi) NNE of Talmage, at 12:31 pm PST on 11 November 2026 (20:31 UTC); the estimated shaking in Talmage was intensity II (weak). Every earthquake near Talmage

This page: a magnitude 2.2 earthquake was recorded 12 km (7 mi) northeast of Talmage, CA, at 6:53 am PST on 13 February 2017 (14:53 UTC), 1.1 km deep. 2 people have reported feeling it to USGS.

USGS: 12 km NE of Talmage, California

89 km (55 mi) NNW of Santa Rosa, CA

6:53 am PST, Feb 13, 2017 · · 1.1 km deep · released about 60 lb of TNT

10 km30 km60 km120 km N Lake County 29 kmMendocino County 42 kmColusa County 71 kmGlenn County 72 kmSonoma County 76 kmNapa County 100 kmYolo County 115 kmSutter County 118 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
6:53 am PST on 13 February 2017 ()
Where
12 km (7 mi) northeast of Talmage, CA · earthquakes near Talmage
Magnitude
M 2.2 (md)
Depth
1.1 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Lake County, 29 km ESE
Nearest mapped fault
Maacama fault, 12 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 3558 days ago

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 18 km (11 mi) from the epicentre. In Talmage, 12 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.

Likely felt in: Upper Lake 13 km, intensity II · Ukiah 14 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 60 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 250,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 180,000× the energy of this one
  3. Around the size people start to feel M 3.0 16× the energy of this one
  4. This earthquake M 2.2 about 60 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 22,000 times the energy of this one.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 5.2 6 km ESE of Talmage, California · 10 km SSW 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 39.1987, -123.0568. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Lake County, CA 29 km (18 mi) ESE earthquakes near Lake County
Mendocino County, CA 42 km (26 mi) NW earthquakes near Mendocino County
Colusa County, CA 71 km (44 mi) E earthquakes near Colusa County
Glenn County, CA 72 km (45 mi) NE earthquakes near Glenn County
Sonoma County, CA 76 km (47 mi) S earthquakes near Sonoma County
Napa County, CA 100 km (62 mi) SE earthquakes near Napa County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

42 earthquakes have been recorded within 50 km since this one.

  1. 1.6 9 km WNW of Cobb, California
  2. 1.9 7 km W of Cobb, California
  3. 1.8 6 km E of Redwood Valley, California
  4. 1.8 18 km E of Potter Valley, California
  5. 1.5 5 km WNW of Cobb, California
  6. 1.6 20 km ENE of Potter Valley, California
  7. 3.1 12 km WSW of Cloverdale, California
  8. 1.5 8 km W of Cobb, California
  9. 1.6 8 km W of Cobb, California
  10. 1.8 19 km NNE of Upper Lake, California
  11. 2.0 8 km WSW of Cobb, California
  12. 1.6 4 km WNW of Cobb, California
  13. 2.2 6 km W of Cobb, California
  14. 2.0 18 km NE of Upper Lake, California
  15. 1.5 7 km W of Cobb, 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.