QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

Earthquake near Avila Beach, CA

No earthquake was likely felt in Avila Beach in the 24 hours to 8:09 am PST (16:09 UTC). The last one was M 1.6, 4 km (2 mi) NNE, at 11:05 pm PDT on 7 June 2026, estimated intensity II (weak) in town. Every earthquake near Avila Beach

This page: a magnitude 2.0 earthquake was recorded in Avila Beach, CA, at 2:41 am PST on 20 February 2023 (10:41 UTC), 5.4 km deep. 1 person has reported feeling it to USGS.

USGS: 1km N of Avila Beach, CA

38 km (24 mi) NW of Santa Maria, CA

2:41 am PST, Feb 20, 2023 · · 5.4 km deep · released about 26 lb of TNT

10 km30 km60 km120 km N San Luis Obispo County 34 kmSanta Barbara County 96 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
2:41 am PST on 20 February 2023 ()
Where
in Avila Beach, CA · earthquakes near Avila Beach
Magnitude
M 2.0 (md)
Depth
5.4 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
San Luis Obispo County, 34 km NE
Nearest mapped fault
Los Osos fault, 7 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 1357 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 15 km (9 mi) from the epicentre. 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: Pismo Beach, Grover Beach, San Luis Obispo, Oceano, Arroyo Grande, Los Osos.

How big was it?

This earthquake released about 26 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 580,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 410,000× the energy of this one
  3. Around the size people start to feel M 3.0 36× the energy of this one
  4. This earthquake M 2.0 about 26 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 lists one earthquake of M5 or more within 50 km:

  1. 5.0 5 km SSW of Nipomo, California · 29 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 35.1858, -120.7308. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
San Luis Obispo County, CA 34 km (21 mi) NE earthquakes near San Luis Obispo County
Santa Barbara County, CA 96 km (60 mi) SE earthquakes near Santa Barbara County
Monterey County, CA 129 km (80 mi) NNW earthquakes near Monterey County
Kings County, CA 129 km (80 mi) NE earthquakes near Kings County

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

Aftershocks so far

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

  1. 1.6 4 km SSW of Paso Robles, CA
  2. 1.7 6 km NE of Santa Margarita, CA
  3. 2.0 34 km WSW of Guadalupe, CA
  4. 1.8 8 km ESE of Atascadero, CA
  5. 1.8 26 km ENE of Nipomo, CA
  6. 2.8 20 km NE of Nipomo, CA
  7. 1.7 9 km WNW of Templeton, CA
  8. 2.0 3 km E of Avila Beach, CA
  9. 2.1 10 km ENE of Cayucos, CA
  10. 1.8 3 km S of Baywood-Los Osos, CA
  11. 1.8 15 km NE of Arroyo Grande, CA
  12. 2.2 5 km W of Templeton, CA
  13. 1.7 8 km ESE of San Luis Obispo, CA
  14. 2.0 10 km WNW of Templeton, CA
  15. 1.9 4 km W of Santa Margarita, 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.