QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

Earthquake near Lakeport, CA

No earthquake was likely felt in Lakeport in the 24 hours to 3:35 pm PST (23:35 UTC). The last one was M 4.0, 51 km (32 mi) N, at 5:01 am PDT on 28 October 2026, estimated intensity II (weak) in town; 14 felt reports to USGS. Every earthquake near Lakeport

This page: a magnitude 3.0 earthquake was recorded 13 km (8 mi) southwest of Lakeport, CA, at 2:40 am PDT on 13 June 2022 (09:40 UTC), 6.1 km deep. 76 people have reported feeling it to USGS.

USGS: 13km SW of Lakeport, CA

2:40 am PDT, Jun 13, 2022 · · 6.1 km deep · released about 990 lb of TNT

10 km30 km60 km120 km N Lake County 29 kmSonoma County 47 kmMendocino County 66 kmColusa County 71 kmNapa County 76 kmGlenn County 89 kmYolo County 100 kmMarin County 102 kmSutter County 113 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
2:40 am PDT on 13 June 2022 ()
Where
13 km (8 mi) southwest of Lakeport, CA · earthquakes near Lakeport
Magnitude
M 3.0 (ml)
Depth
6.1 km below the surface
Felt
76 reports · strongest reported intensity IV
Nearest
Lake County, 29 km NE
Nearest mapped fault
Maacama fault, 4 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 1545 days ago

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 37 km (23 mi) from the epicentre. In Lakeport, 13 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: Lakeport 13 km, intensity III · Cloverdale 16 km, intensity III · Upper Lake 26 km, intensity II · Cobb 28 km, intensity II · Ukiah 29 km, intensity II · Boonville 32 km, intensity II · Clearlake 33 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 990 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 340,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 15,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 990 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 1,300 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 · 21 km NNW 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 38.9462, -123.0025. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Lake County, CA 29 km (18 mi) NE earthquakes near Lake County
Sonoma County, CA 47 km (29 mi) S earthquakes near Sonoma County
Mendocino County, CA 66 km (41 mi) NW earthquakes near Mendocino County
Colusa County, CA 71 km (44 mi) ENE earthquakes near Colusa County
Napa County, CA 76 km (47 mi) SE earthquakes near Napa County
Glenn County, CA 89 km (56 mi) NE earthquakes near Glenn County

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

Aftershocks so far

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

  1. 2.3 8km NW of The Geysers, CA
  2. 1.6 13km ENE of Healdsburg, CA
  3. 1.5 3km N of Clearlake, CA
  4. 1.5 3km N of Clearlake, CA
  5. 1.5 3km W of Cobb, CA
  6. 1.6 7km W of Cobb, CA
  7. 1.9 7km W of Cobb, CA
  8. 2.5 2km W of Anderson Springs, CA
  9. 1.9 2km WSW of Anderson Springs, CA
  10. 2.1 2km WSW of Anderson Springs, CA
  11. 2.0 4km WNW of The Geysers, CA
  12. 1.7 5km W of Cobb, CA
  13. 1.9 6km SSE of Cloverdale, CA
  14. 1.9 3km SSE of The Geysers, CA
  15. 1.8 7km 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

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