QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

Earthquake near Laytonville, CA

No earthquake was likely felt in Laytonville in the 24 hours to 11:01 pm PST (07:01 UTC). The last one was M 2.4, 13 km (8 mi) WSW, at 7:25 am PST on 4 November 2026, estimated intensity II (weak) in town. Every earthquake near Laytonville

This page: a magnitude 2.0 earthquake was recorded 17 km (10 mi) north of Laytonville, CA, at 10:11 am PDT on 4 June 2018 (17:11 UTC), 7.5 km deep.

USGS: 16km N of Laytonville, CA

10:11 am PDT, Jun 4, 2018 · · 7.5 km deep · released about 29 lb of TNT

10 km30 km60 km120 km N Mendocino County 45 kmGlenn County 95 kmTrinity County 95 kmLake County 102 kmHumboldt County 104 kmTehama County 110 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
10:11 am PDT on 4 June 2018 ()
Where
17 km (10 mi) north of Laytonville, CA · earthquakes near Laytonville
Magnitude
M 2.0 (md)
Depth
7.5 km below the surface
Felt
no reports yet
Nearest
Mendocino County, 45 km S
Nearest mapped fault
Bartlett Springs fault system, 9 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 3082 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 14 km (9 mi) from the epicentre. In Laytonville, 17 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: Covelo.

How big was it?

This earthquake released about 29 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 520,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 370,000× the energy of this one
  3. Around the size people start to feel M 3.0 33× the energy of this one
  4. This earthquake M 2.0 about 29 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 4.3 on 2017-12-14 — about 2,500 times the energy of this one.

Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:

  1. 5.9 9 km S of Leggett, California · 24 km WSW of this epicentre
  2. 5.5 7 km ESE of Shelter Cove, California · 49 km WNW 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 39.8362, -123.4675. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Mendocino County, CA 45 km (28 mi) S earthquakes near Mendocino County
Glenn County, CA 95 km (59 mi) ESE earthquakes near Glenn County
Trinity County, CA 95 km (59 mi) NNE earthquakes near Trinity County
Lake County, CA 102 km (63 mi) SE earthquakes near Lake County
Humboldt County, CA 104 km (65 mi) NNW earthquakes near Humboldt County
Tehama County, CA 110 km (68 mi) ENE earthquakes near Tehama County

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

Aftershocks so far

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

  1. 2.6 9km NNE of Brooktrails, CA
  2. 2.4 3km NW of Redway, CA
  3. 1.6 7km ENE of Willits, CA
  4. 2.3 7km E of Willits, CA
  5. 1.6 7km ENE of Willits, CA
  6. 1.8 13km SSE of Laytonville, CA
  7. 2.1 3km NNE of Redway, CA
  8. 1.6 10km SSE of Laytonville, CA
  9. 1.6 14km SW of Laytonville, CA
  10. 1.9 7km NE of Brooktrails, CA
  11. 1.9 4km NNE of Laytonville, CA
  12. 3.8 6km ENE of Willits, CA
  13. 1.6 18km NNW of Covelo, CA
  14. 1.8 12km SE of Laytonville, CA
  15. 1.8 21km N of Laytonville, 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

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