QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

Earthquake near Kelseyville, CA

No earthquake was likely felt in Kelseyville in the 24 hours to 3:27 pm PST (23:27 UTC). The last one was M 2.6, 22 km (14 mi) SSE, at 4:44 pm PST on 8 November 2026, estimated intensity II (weak) in town. Every earthquake near Kelseyville

This page: a magnitude 2.0 earthquake was recorded 9 km (6 mi) south of Kelseyville, CA, at 3:35 am PDT on 12 May 2019 (10:35 UTC), 2.1 km deep.

USGS: 9km S of Kelseyville, CA

52 km (32 mi) NNW of Santa Rosa, CA · 130 km (81 mi) NNW of San Francisco, CA

3:35 am PDT, May 12, 2019 · · 2.1 km deep · released about 31 lb of TNT

10 km30 km60 km120 km N Lake County 25 kmSonoma County 42 kmColusa County 62 kmNapa County 63 kmMendocino County 78 kmYolo County 86 kmGlenn County 88 kmMarin County 95 kmSutter County 101 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
3:35 am PDT on 12 May 2019 ()
Where
9 km (6 mi) south of Kelseyville, CA · earthquakes near Kelseyville
Magnitude
M 2.0 (md)
Depth
2.1 km below the surface
Felt
no reports yet
Nearest
Lake County, 25 km NNE
Nearest mapped fault
Big Valley fault, 8 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 2738 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 16 km (10 mi) from the epicentre. In Kelseyville, 9 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: Cobb 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 31 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 5.8 480,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 340,000× the energy of this one
  3. Around the size people start to feel M 3.0 31× the energy of this one
  4. This earthquake M 2.0 about 31 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 42,000 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 · 32 km NW 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 38.8980, -122.8573. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Lake County, CA 25 km (16 mi) NNE earthquakes near Lake County
Sonoma County, CA 42 km (26 mi) S earthquakes near Sonoma County
Colusa County, CA 62 km (38 mi) ENE earthquakes near Colusa County
Napa County, CA 63 km (39 mi) SE earthquakes near Napa County
Mendocino County, CA 78 km (48 mi) NW earthquakes near Mendocino County
Yolo County, CA 86 km (54 mi) ESE earthquakes near Yolo County

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

Aftershocks so far

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

  1. 1.6 9km NW of The Geysers, CA
  2. 1.6 9km NW of The Geysers, CA
  3. 2.5 6km WNW of Cobb, CA
  4. 2.3 2km WNW of The Geysers, CA
  5. 1.5 2km NE of The Geysers, CA
  6. 1.5 6km NW of The Geysers, CA
  7. 2.5 7km WNW of The Geysers, CA
  8. 2.0 6km W of Cobb, CA
  9. 1.6 10km WNW of The Geysers, CA
  10. 2.9 10km WNW of The Geysers, CA
  11. 1.6 10km WNW of The Geysers, CA
  12. 1.7 1km NNW of The Geysers, CA
  13. 1.7 7km NW of The Geysers, CA
  14. 1.9 6km WNW of The Geysers, CA
  15. 2.3 10km 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.