QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

Earthquake near Orcutt, CA

No earthquake was likely felt in Orcutt in the 24 hours to 7:21 am PST (15:21 UTC). The last one was M 1.8, 8 km (5 mi) WSW, at 2:02 pm PDT on 18 April 2026, estimated intensity II (weak) in town. Every earthquake near Orcutt

This page: a magnitude 2.1 earthquake was recorded 5 km (3 mi) south-southwest of Orcutt, CA, at 1:33 pm PST on 11 November 2019 (21:33 UTC), 1.4 km deep. 8 people have reported feeling it to USGS.

USGS: 5km SSW of Orcutt, CA

13 km (8 mi) S of Santa Maria, CA

1:33 pm PST, Nov 11, 2019 · · 1.4 km deep · released about 41 lb of TNT

Every earthquake near Orcutt Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Santa Barbara County 50 kmSan Luis Obispo County 63 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
1:33 pm PST on 11 November 2019 ()
Where
5 km (3 mi) south-southwest of Orcutt, CA · earthquakes near Orcutt
Magnitude
M 2.1 (ml)
Depth
1.4 km below the surface
Felt
8 reports · strongest reported intensity IV
Nearest
Santa Barbara County, 50 km SE
Nearest mapped fault
Los Alamos fault, 13 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 2557 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 17 km (11 mi) from the epicentre. In Orcutt, 5 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: Orcutt 5 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 41 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 370,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 260,000× the energy of this one
  3. Around the size people start to feel M 3.0 23× the energy of this one
  4. This earthquake M 2.1 about 41 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 4.3 on 2017-10-26 — about 2,300 times the energy of this one.

Before 2016, the USGS record lists 5 earthquakes of M5 or more within 50 km:

  1. 6.9 The 1927 Lompoc, California Earthquake · 28 km SW of this epicentre
  2. 5.8 Near Los Alamos, California · 6 km ESE of this epicentre
  3. 5.8 Near Los Alamos, California · 20 km SE of this epicentre
  4. 5.7 Near Los Alamos, California · 34 km SE of this epicentre
  5. 5.0 5 km SSW of Nipomo, California · 20 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 34.8208, -120.4573. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Santa Barbara County, CA 50 km (31 mi) SE earthquakes near Santa Barbara County
San Luis Obispo County, CA 63 km (39 mi) N earthquakes near San Luis Obispo County

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

Aftershocks so far

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

  1. 2.0 3km ENE of Vandenberg Village, CA
  2. 2.3 26km SW of Lompoc, CA
  3. 1.6 10km SSE of Orcutt, CA
  4. 1.5 10km SSE of Orcutt, CA
  5. 2.3 6km E of Vandenberg Village, CA
  6. 1.9 3km NW of Vandenberg Village, CA
  7. 2.0 6km NNW of Los Olivos, CA
  8. 1.9 7km NNW of Los Olivos, CA
  9. 1.8 11km ENE of Santa Maria, CA
  10. 1.9 35km SW of Avila Beach, CA
  11. 1.9 27km W of Guadalupe, CA
  12. 2.2 36km WSW of Guadalupe, CA
  13. 2.1 32km WSW of Guadalupe, CA
  14. 2.5 22km SW of Lompoc, CA
  15. 1.6 10km NNE of Los Alamos, 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.