QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

Earthquake near Maricopa, CA

No earthquake was likely felt in Maricopa in the 24 hours to 7:40 am PST (15:40 UTC). The last one was M 4.1, 51 km (32 mi) ESE, at 3:38 am PDT on 12 July 2026, estimated intensity III (weak) in town; 798 felt reports to USGS. Every earthquake near Maricopa

This page: a magnitude 1.6 earthquake was recorded 29 km (18 mi) west-southwest of Maricopa, CA, at 9:20 am PST on 14 December 2019 (17:20 UTC), 6.9 km deep.

USGS: 29km WSW of Maricopa, CA

74 km (46 mi) SW of Bakersfield, CA

9:20 am PST, Dec 14, 2019 · · 6.9 km deep · released about 7.1 lb of TNT

10 km30 km60 km120 km N Santa Barbara County 57 kmSan Luis Obispo County 83 kmVentura County 85 kmKern County 98 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
9:20 am PST on 14 December 2019 ()
Where
29 km (18 mi) west-southwest of Maricopa, CA · earthquakes near Maricopa
Magnitude
M 1.6 (ml)
Depth
6.9 km below the surface
Felt
no reports yet
Nearest
Santa Barbara County, 57 km SSW
Nearest mapped fault
San Andreas fault, 15 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 2522 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 9 km (6 mi) from the epicentre. In Maricopa, 29 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: Taft Heights, South Taft, Taft.

How big was it?

This earthquake released about 7.1 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 2,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,500,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.1 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 34.9635, -119.6960. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Santa Barbara County, CA 57 km (35 mi) SSW earthquakes near Santa Barbara County
San Luis Obispo County, CA 83 km (52 mi) NW earthquakes near San Luis Obispo County
Ventura County, CA 85 km (53 mi) SE earthquakes near Ventura County
Kern County, CA 98 km (61 mi) ENE earthquakes near Kern County

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

Aftershocks so far

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

  1. 1.8 19km E of Maricopa, CA
  2. 2.0 19km E of Maricopa, CA
  3. 1.5 20km NNE of Carpinteria, CA
  4. 1.8 25km NNE of Montecito, CA
  5. 3.0 15km SSE of Buttonwillow, CA
  6. 3.9 15km SSE of Buttonwillow, CA
  7. 1.5 11km NW of Pine Mountain Club, CA
  8. 1.6 14km SW of Taft, CA
  9. 2.0 25km NNE of Montecito, CA
  10. 1.6 16km SW of Buttonwillow, CA
  11. 1.6 25km NNE of Montecito, CA
  12. 1.7 25km NNE of Montecito, CA
  13. 1.6 19km N of Pine Mountain Club, CA
  14. 1.6 19km ENE of Maricopa, CA
  15. 1.6 15km W of Taft, 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.