QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3ml

Earthquake near Soledad, CA

No earthquake was likely felt in Soledad in the 24 hours to 2:32 am PST (10:32 UTC). The last one was M 3.0, 26 km (16 mi) N, at 2:58 pm PDT on 22 October 2026, estimated intensity II (weak) in town. Every earthquake near Soledad

This page: a magnitude 3.3 earthquake was recorded 38 km (24 mi) east of Soledad, CA, at 8:16 am PDT on 18 March 2022 (15:16 UTC), 18 km deep. 5 people have reported feeling it to USGS.

USGS: 22km ESE of Pinnacles, CA

8:16 am PDT, Mar 18, 2022 · · 18 km deep · released about 1.3 tons of TNT

10 km30 km60 km120 km N San Benito County 22 kmMonterey County 46 kmMerced County 81 kmSanta Clara County 108 kmKings County 108 kmSanta Cruz County 114 kmFresno County 116 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
8:16 am PDT on 18 March 2022 ()
Where
38 km (24 mi) east of Soledad, CA · earthquakes near Soledad
Magnitude
M 3.3 (ml)
Depth
18 km below the surface
Felt
5 reports · strongest reported intensity II
Nearest
San Benito County, 22 km NW
Nearest mapped fault
San Andreas fault, 11 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 1630 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 48 km (30 mi) from the epicentre. In Soledad, 38 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: Greenfield 35 km, intensity II · King City 36 km, intensity II · Soledad 38 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 6,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,300× 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 2.6× 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 2019-10-15 — about 140 times the energy of this one.

Before 2016, the USGS record lists 12 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.1 Northwest of Huron, California · 27 km E of this epicentre
  2. 5.9 10 km SE of Tres Pinos, California · 40 km NW of this epicentre
  3. 5.8 Near Paicines, California · 37 km NW of this epicentre
  4. 5.8 29 km NE of San Lucas, California · 24 km SSE of this epicentre
  5. 5.5 12 km S of Tres Pinos, California · 42 km WNW 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 36.4830, -120.9055. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
San Benito County, CA 22 km (13 mi) NW earthquakes near San Benito County
Monterey County, CA 46 km (28 mi) SW earthquakes near Monterey County
Merced County, CA 81 km (50 mi) NNE earthquakes near Merced County
Santa Clara County, CA 108 km (67 mi) NW earthquakes near Santa Clara County
Kings County, CA 108 km (67 mi) ESE earthquakes near Kings County
Santa Cruz County, CA 114 km (71 mi) WNW earthquakes near Santa Cruz County

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

Aftershocks so far

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

  1. 1.5 23km NE of King City, CA
  2. 1.7 2km NE of Pinnacles, CA
  3. 2.0 21km ESE of Pinnacles, CA
  4. 1.6 4km NNW of Pinnacles, CA
  5. 2.7 5km NNE of Pinnacles, CA
  6. 2.1 5km NNE of Pinnacles, CA
  7. 2.5 5km NNE of Pinnacles, CA
  8. 1.6 29km NE of Pinnacles, CA
  9. 1.9 8km E of Pinnacles, CA
  10. 1.6 27km NNE of Pinnacles, CA
  11. 1.6 7km NNW of Pinnacles, CA
  12. 1.6 12km S of Tres Pinos, CA
  13. 2.0 23km SW of Los Banos, CA
  14. 2.2 13km S of Tres Pinos, CA
  15. 3.2 12km S of Tres Pinos, 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.