QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

Earthquake near Santa Barbara, CA

No earthquake was likely felt in Santa Barbara in the 24 hours to 7:08 am PST (15:08 UTC). The last one was M 2.1, 15 km (9 mi) S, at 9:33 pm PST on 4 November 2026, estimated intensity II (weak) in town. Every earthquake near Santa Barbara

This page: a magnitude 2.2 earthquake was recorded 8 km (5 mi) south-southwest of Santa Barbara, CA, at 7:43 pm PST on 12 November 2023 (03:43 UTC), less than 1 km deep. 12 people have reported feeling it to USGS.

USGS: 8 km SSW of Santa Barbara, CA

6 km (4 mi) SSW of Santa Barbara, CA · 128 km (80 mi) WNW of Los Angeles, CA

7:43 pm PST, Nov 12, 2023 · · -0.1 km deep · released about 52 lb of TNT

Every earthquake near Santa Barbara Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Santa Barbara County 34 kmVentura County 56 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
7:43 pm PST on 12 November 2023 ()
Where
8 km (5 mi) south-southwest of Santa Barbara, CA · earthquakes near Santa Barbara
Magnitude
M 2.2 (ml)
Depth
-0.1 km below the surface
Felt
12 reports · strongest reported intensity IV
Nearest
Santa Barbara County, 34 km NW
Nearest mapped fault
Red Mountain fault, 2 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 1095 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 18 km (11 mi) from the epicentre. In Santa Barbara, 8 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: Santa Barbara 8 km, intensity II · Goleta 12 km, intensity II · Isla Vista 13 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 52 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 290,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 200,000× the energy of this one
  3. Around the size people start to feel M 3.0 18× the energy of this one
  4. This earthquake M 2.2 about 52 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 4.1 on 2017-05-17 — about 710 times the energy of this one.

Before 2016, the USGS record lists 8 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.8 The 1925 Santa Barbara, California Earthquake · 8 km SW of this epicentre
  2. 5.5 30 km SW of Channel Islands Beach, California · 45 km SSE of this epicentre
  3. 5.5 10 km NE of Toro Canyon, California · 28 km NE of this epicentre
  4. 5.5 The 1941 Santa Barbara, California Earthquake · 17 km E of this epicentre
  5. 5.2 9 km SW of Channel Islands Beach, California · 50 km SE 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 34.3545, -119.7427. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Santa Barbara County, CA 34 km (21 mi) NW earthquakes near Santa Barbara County
Ventura County, CA 56 km (35 mi) E earthquakes near Ventura County
San Luis Obispo County, CA 132 km (82 mi) NNW earthquakes near San Luis Obispo County
Kern County, CA 144 km (89 mi) NE earthquakes near Kern County

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

Aftershocks so far

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

  1. 2.1 10 km NE of Santa Ynez, CA
  2. 2.2 11 km NE of Santa Ynez, CA
  3. 1.6 12 km SSE of Carpinteria, CA
  4. 1.8 21 km S of Santa Barbara, CA
  5. 1.6 2 km SW of Ojai, CA
  6. 2.2 18 km W of Isla Vista, CA
  7. 2.8 18 km W of Isla Vista, CA
  8. 2.9 4 km W of Santa Barbara, CA
  9. 1.8 4 km WNW of Santa Barbara, CA
  10. 2.2 5 km WNW of Santa Barbara, CA
  11. 2.3 4 km W of Santa Barbara, CA
  12. 1.7 19 km SSW of Carpinteria, CA
  13. 2.2 2 km W of Carpinteria, CA
  14. 2.3 14 km SSE of Isla Vista, CA
  15. 2.3 14 km SSE of Isla Vista, 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.