QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

13 km WSW of Laytonville, California

· 3.1 km deep · released about 220 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mendocino County 30 kmLake County 98 kmGlenn County 106 kmTrinity County 118 kmHumboldt County 119 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
Magnitude
M 2.6 (md)
Depth
3.1 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Mendocino County, 30 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3358 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 220 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 70,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 50,000× the energy of this one
  3. Around the size people start to feel M 3.0 4.4× the energy of this one
  4. This earthquake M 2.6 about 220 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.

Where

Epicentre 39.6612, -123.6377. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mendocino County, CA 30 km (19 mi) NNW of here earthquakes near Mendocino County
Lake County, CA 98 km (61 mi) NW of here earthquakes near Lake County
Glenn County, CA 106 km (66 mi) W of here earthquakes near Glenn County
Trinity County, CA 118 km (74 mi) SSW of here earthquakes near Trinity County
Humboldt County, CA 119 km (74 mi) SSE of here earthquakes near Humboldt County
Colusa County, CA 132 km (82 mi) WNW of here earthquakes near Colusa County

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

Aftershocks so far

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

  1. 1.9 16km NNW of Laytonville, CA
  2. 2.2 10km SW of Laytonville, CA
  3. 1.9 12km N of Laytonville, CA
  4. 1.9 18km NNW of Laytonville, CA
  5. 2.0 19km NE of Rockport, CA
  6. 2.0 17km NW of Lake Pillsbury, CA
  7. 1.5 6km ESE of Willits, CA
  8. 1.7 16km WSW of Laytonville, CA
  9. 4.3 17km WSW of Laytonville, CA
  10. 2.0 7km SSE of Laytonville, CA
  11. 1.9 11km E of Rockport, CA
  12. 1.9 12km N of Laytonville, CA
  13. 1.7 12km N of Laytonville, CA
  14. 2.1 5km WNW of Covelo, CA
  15. 1.8 12km N of Brooktrails, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.1 on 2016-11-06 — it released about 170 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

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