QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3ml

Earthquake near Cambria, CA

No earthquake was likely felt in Cambria in the 24 hours to 1:58 pm PST (21:58 UTC). The last one was M 2.3, 18 km (11 mi) NNE, at 5:04 pm PDT on 21 September 2026, estimated intensity II (weak) in town. Every earthquake near Cambria

This page: a magnitude 3.3 earthquake was recorded 16 km (10 mi) north-northwest of Cambria, CA, at 3:02 pm PST on 16 February 2022 (23:02 UTC), 6.6 km deep. 10 people have reported feeling it to USGS.

USGS: 8km NE of San Simeon, CA

3:02 pm PST, Feb 16, 2022 · · 6.6 km deep · released about 1.3 tons of TNT

10 km30 km60 km120 km N Monterey County 63 kmSan Luis Obispo County 70 kmSan Benito County 102 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
3:02 pm PST on 16 February 2022 ()
Where
16 km (10 mi) north-northwest of Cambria, CA · earthquakes near Cambria
Magnitude
M 3.3 (ml)
Depth
6.6 km below the surface
Felt
10 reports · strongest reported intensity III
Nearest
Monterey County, 63 km NNW
Nearest mapped fault
San Simeon fault, 9 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 1657 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 52 km (32 mi) from the epicentre. In Cambria, 16 km away, the estimate is intensity III (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: Cambria 16 km, intensity III · Cayucos 35 km, intensity II · Paso Robles 40 km, intensity II · Atascadero 47 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 1.3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 130,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 5,600× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,000× the energy of this one
  4. This earthquake M 3.3 about 1.3 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.8× more

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 4.7 on 2021-10-25 — about 110 times the energy of this one.

Before 2016, the USGS record lists 9 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.5 10 km NE of San Simeon, California · 2 km E of this epicentre
  2. 6.2 28km NW of Cambria, CA · 18 km W of this epicentre
  3. 5.8 1934 Parkfield, California Earthquake · 45 km ENE of this epicentre
  4. 5.7 Southwest of Cambria, California · 23 km SSW of this epicentre
  5. 5.2 26km NNW of Lake Nacimiento, CA · 31 km NNE 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 35.6987, -121.1255. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Monterey County, CA 63 km (39 mi) NNW earthquakes near Monterey County
San Luis Obispo County, CA 70 km (44 mi) ESE earthquakes near San Luis Obispo County
San Benito County, CA 102 km (63 mi) N earthquakes near San Benito County
Kings County, CA 125 km (78 mi) ENE earthquakes near Kings County

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

Aftershocks so far

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

  1. 2.2 18km NNW of San Simeon, CA
  2. 2.0 11km NNE of Cambria, CA
  3. 2.0 10km N of San Simeon, CA
  4. 2.5 14km NE of San Simeon, CA
  5. 1.9 19km SSE of Lopez Point, CA
  6. 1.7 8km NE of San Simeon, CA
  7. 1.6 27km NNW of San Simeon, CA
  8. 1.6 5km E of San Ardo, CA
  9. 1.8 25km SSE of Lopez Point, CA
  10. 2.2 6km NE of San Simeon, CA
  11. 1.7 9km WNW of Templeton, CA
  12. 1.5 8km ENE of San Simeon, CA
  13. 1.9 11km N of Cayucos, CA
  14. 1.7 2km ENE of Cayucos, CA
  15. 1.8 7km NNE of San Simeon, 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.