QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

Earthquake near Ukiah, CA

Yes: an earthquake was likely felt in Ukiah in the last 24 hours. M 1.5, 5 km (3 mi) E of Ukiah, at 3:26 am PST on 12 November 2026 (11:26 UTC); the estimated shaking in Ukiah was intensity II (weak). Every earthquake near Ukiah

This page: a magnitude 1.6 earthquake was recorded 49 km (31 mi) southwest of Ukiah, CA, at 8:08 pm PDT on 14 October 2022 (03:08 UTC), 6.2 km deep.

USGS: 9km SE of Point Arena, CA

92 km (57 mi) WNW of Santa Rosa, CA

8:08 pm PDT, Oct 14, 2022 · · 6.2 km deep · released about 8.1 lb of TNT

10 km30 km60 km120 km N Mendocino County 67 kmSonoma County 71 kmLake County 82 kmMarin County 118 kmNapa County 120 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
8:08 pm PDT on 14 October 2022 ()
Where
49 km (31 mi) southwest of Ukiah, CA · earthquakes near Ukiah
Magnitude
M 1.6 (md)
Depth
6.2 km below the surface
Felt
no reports yet
Nearest
Mendocino County, 67 km NNE
Nearest mapped fault
San Andreas fault, 5 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 1489 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 10 km (6 mi) from the epicentre. In Ukiah, 49 km away, the estimate is intensity I (not felt). 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: Sea Ranch, Boonville.

How big was it?

This earthquake released about 8.1 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,300,000× the energy of this one
  3. Around the size people start to feel M 3.0 120× the energy of this one
  4. This earthquake M 1.6 about 8.1 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

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 38.8513, -123.6310. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Mendocino County, CA 67 km (41 mi) NNE earthquakes near Mendocino County
Sonoma County, CA 71 km (44 mi) ESE earthquakes near Sonoma County
Lake County, CA 82 km (51 mi) ENE earthquakes near Lake County
Marin County, CA 118 km (73 mi) SE earthquakes near Marin County
Napa County, CA 120 km (74 mi) ESE earthquakes near Napa County
Glenn County, CA 135 km (84 mi) NE earthquakes near Glenn County

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

Aftershocks so far

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

  1. 2.2 15km NE of Point Arena, CA
  2. 1.5 4km SSE of Point Arena, CA
  3. 1.5 16km SE of Boonville, CA
  4. 1.7 16km WSW of Redwood Valley, CA
  5. 1.7 21km E of Navarro Head, CA
  6. 2.1 21km E of Navarro Head, CA
  7. 1.7 23km SSW of Willits, CA
  8. 1.8 23km SSW of Willits, CA
  9. 1.7 17km NNW of Cloverdale, CA
  10. 1.6 2km SW of Point Arena, CA
  11. 1.6 1km SW of Point Arena, CA
  12. 1.8 6km E of Point Arena, CA
  13. 1.7 7km ESE of Point Arena, CA
  14. 1.7 21km WNW of Ukiah, CA
  15. 1.6 16km ESE of Navarro Head, 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.