QuakeIndex

Earthquake · automatic estimate, may change

M 2.4ml

Earthquake near Kelseyville, CA

Yes. A magnitude 2.4 earthquake was recorded 13 km (8 mi) west-southwest of Kelseyville, CA, at 7:45 am PDT on 20 October 2026 (14:45 UTC), 33 km deep. No felt reports to USGS yet. The magnitude and location are an automatic first estimate and may change.

USGS: 13 km WSW of Kelseyville, CA

59 km (37 mi) NNW of Santa Rosa, CA · 137 km (85 mi) NNW of San Francisco, CA

7:45 am PDT, Oct 20, 2026 · · 33 km deep · released about 130 lb of TNT

10 km30 km60 km120 km N Lake County 28 kmSonoma County 46 kmMendocino County 68 kmColusa County 70 kmNapa County 74 kmGlenn County 90 kmYolo County 97 kmMarin County 100 kmSutter County 111 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
7:45 am PDT on 20 October 2026 ()
Where
13 km (8 mi) west-southwest of Kelseyville, CA · earthquakes near Kelseyville
Magnitude
M 2.4 (ml)
Depth
33 km below the surface
Felt
no reports yet
Nearest
Lake County, 28 km NE
Nearest mapped fault
Maacama fault, 6 km from its surface trace — near is not the same as on
Status
Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS · we first saw it 5 hours ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. In Kelseyville, 13 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: Lakeport, Cloverdale, Soda Bay, North Lakeport, Clear Lake Riviera, Nice.

How big was it?

This earthquake released about 130 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 120,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 83,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.4× the energy of this one
  4. This earthquake M 2.4 about 130 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 10,000 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 · 23 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 38.9323, -122.9788. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Lake County, CA 28 km (17 mi) NE earthquakes near Lake County
Sonoma County, CA 46 km (28 mi) S earthquakes near Sonoma County
Mendocino County, CA 68 km (43 mi) NW earthquakes near Mendocino County
Colusa County, CA 70 km (43 mi) ENE earthquakes near Colusa County
Napa County, CA 74 km (46 mi) SE earthquakes near Napa County
Glenn County, CA 90 km (56 mi) NNE earthquakes near Glenn County

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

Aftershocks so far

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

  1. 1.1 7 km NW of The Geysers, CA
  2. 0.8 6 km WNW of Cobb, CA
  3. 1.0 1 km SW of Anderson Springs, CA
  4. 1.1 1 km N of The Geysers, CA
  5. 2.5 2 km NW of The Geysers, CA
  6. 0.2 11 km WNW of Cobb, CA
  7. 1.1 3 km NW of The Geysers, CA
  8. 1.1 3 km NW of The Geysers, 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.