QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

Earthquake near Cloverdale, CA

Yes: an earthquake was likely felt in Cloverdale in the last 24 hours. M 1.7, 7 km (4 mi) SE of Cloverdale, at 7:43 pm PST on 11 November 2026 (03:43 UTC); the estimated shaking in Cloverdale was intensity II (weak). Every earthquake near Cloverdale

This page: a magnitude 3.1 earthquake was recorded 13 km (8 mi) west-southwest of Cloverdale, CA, at 4:59 am PST on 7 March 2017 (12:59 UTC), 4.5 km deep. 40 people have reported feeling it to USGS.

USGS: 12 km WSW of Cloverdale, California

54 km (33 mi) NW of Santa Rosa, CA · 128 km (80 mi) NNW of San Francisco, CA

4:59 am PST, Mar 7, 2017 · · 4.5 km deep · released about 1,500 lb of TNT

10 km30 km60 km120 km N Sonoma County 35 kmLake County 51 kmMendocino County 77 kmNapa County 78 kmMarin County 88 kmColusa County 91 kmYolo County 109 kmGlenn County 113 kmSan Francisco County 117 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
4:59 am PST on 7 March 2017 ()
Where
13 km (8 mi) west-southwest of Cloverdale, CA · earthquakes near Cloverdale
Magnitude
M 3.1 (ml)
Depth
4.5 km below the surface
Felt
40 reports · strongest reported intensity III
Nearest
Sonoma County, 35 km SE
Nearest mapped fault
Alexander-Redwood Hill fault, 16 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 3452 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 43 km (27 mi) from the epicentre. In Cloverdale, 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: Cloverdale 13 km, intensity III · Healdsburg 31 km, intensity II · Boonville 31 km, intensity II · Lakeport 36 km, intensity II · Cobb 38 km, intensity II · Windsor 39 km, intensity II · Ukiah 42 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 1,500 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 230,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 10,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 7,200× the energy of this one
  4. This earthquake M 3.1 about 1,500 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.6× more

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 5.0 on 2016-12-14 — about 660 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 · 38 km N 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 38.7772, -123.1580. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Sonoma County, CA 35 km (21 mi) SE earthquakes near Sonoma County
Lake County, CA 51 km (32 mi) NE earthquakes near Lake County
Mendocino County, CA 77 km (48 mi) NNW earthquakes near Mendocino County
Napa County, CA 78 km (49 mi) ESE earthquakes near Napa County
Marin County, CA 88 km (55 mi) SSE earthquakes near Marin County
Colusa County, CA 91 km (57 mi) ENE earthquakes near Colusa County

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

Aftershocks so far

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

  1. 1.5 5 km WNW of Cobb, California
  2. 2.2 3 km S of Cobb, California
  3. 1.7 6 km W of Cobb, California
  4. 2.0 6 km W of Cobb, California
  5. 1.5 5 km WNW of Cobb, California
  6. 1.8 6 km WSW of Cobb, California
  7. 2.6 5 km SW of Cobb, California
  8. 2.7 4 km WNW of Cobb, California
  9. 1.6 2 km NW of Lower Lake, California
  10. 1.7 2 km NW of Lower Lake, California
  11. 2.2 5 km W of Cobb, California
  12. 1.5 8 km WSW of Cobb, California
  13. 1.7 4 km S of Cobb, California
  14. 1.6 5 km WNW of Cobb, California
  15. 1.7 7 km WSW of Cobb, California

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.