QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

Earthquake near Santa Rosa, CA

No earthquake was likely felt in Santa Rosa in the 24 hours to 9:01 am PST (17:01 UTC). The last one was M 1.9, 5 km (3 mi) NE, at 2:01 pm PDT on 23 October 2026, estimated intensity II (weak) in town. Every earthquake near Santa Rosa

This page: a magnitude 2.0 earthquake was recorded 32 km (20 mi) southwest of Santa Rosa, CA, at 4:42 pm PST on 15 November 2023 (00:42 UTC), 11 km deep.

USGS: 2 km W of Dillon Beach, CA

71 km (44 mi) NW of San Francisco, CA · 31 km (19 mi) W of Petaluma, CA

4:42 pm PST, Nov 15, 2023 · · 11 km deep · released about 28 lb of TNT

Every earthquake near Santa Rosa Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Marin County 30 kmSonoma County 32 kmSan Francisco County 57 kmNapa County 65 kmSolano County 91 kmContra Costa County 97 kmLake County 99 kmYolo County 106 kmSan Mateo County 106 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
4:42 pm PST on 15 November 2023 ()
Where
32 km (20 mi) southwest of Santa Rosa, CA · earthquakes near Santa Rosa
Magnitude
M 2.0 (md)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Marin County, 30 km SE
Nearest mapped fault
San Andreas fault, 1 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 1091 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 11 km (7 mi) from the epicentre. In Santa Rosa, 32 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: Bodega Bay, Occidental, Inverness, Camp Meeker, Sebastopol, Graton.

How big was it?

This earthquake released about 28 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 5.8 540,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 380,000× the energy of this one
  3. Around the size people start to feel M 3.0 34× the energy of this one
  4. This earthquake M 2.0 about 28 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 4.4 on 2022-09-14 — about 4,100 times the energy of this one.

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

  1. 5.3 3 km E of Bloomfield, California · 18 km ENE of this epicentre
  2. 5.3 Northern California · 17 km ENE 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 38.2405, -122.9857. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Marin County, CA 30 km (18 mi) SE earthquakes near Marin County
Sonoma County, CA 32 km (20 mi) N earthquakes near Sonoma County
San Francisco County, CA 57 km (36 mi) S earthquakes near San Francisco County
Napa County, CA 65 km (40 mi) ENE earthquakes near Napa County
Solano County, CA 91 km (57 mi) E earthquakes near Solano County
Contra Costa County, CA 97 km (60 mi) ESE earthquakes near Contra Costa County

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

Aftershocks so far

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

  1. 2.1 4 km SE of Larkfield-Wikiup, CA
  2. 2.5 4 km SE of Larkfield-Wikiup, CA
  3. 2.1 7 km S of Calistoga, CA
  4. 1.7 6 km SSW of Calistoga, CA
  5. 2.0 4 km WNW of Bodega Bay, CA
  6. 1.6 8 km S of Calistoga, CA
  7. 2.5 1 km S of Inverness, CA
  8. 1.9 10 km WNW of Calistoga, CA
  9. 1.5 2 km ESE of Santa Rosa, CA
  10. 2.7 5 km NNE of Windsor, CA
  11. 1.9 3 km N of Larkfield-Wikiup, CA
  12. 2.4 7 km S of Temelec, CA
  13. 1.8 7 km WSW of Kenwood, CA
  14. 1.6 7 km WSW of Kenwood, CA
  15. 2.4 7 km WSW of Kenwood, 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.