QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

Earthquake near Salinas, CA

No earthquake was likely felt in Salinas in the 24 hours to 9:05 am PST (17:05 UTC). The last one was M 2.7, 18 km (11 mi) ENE, at 5:38 am PDT on 29 October 2026, estimated intensity II (weak) in town; 3 felt reports to USGS. Every earthquake near Salinas

This page: a magnitude 1.6 earthquake was recorded 49 km (30 mi) south of Salinas, CA, at 3:52 pm PST on 10 March 2021 (23:52 UTC), 13 km deep.

USGS: 16km ESE of Point Sur, CA

51 km (32 mi) S of Salinas, CA · 117 km (73 mi) S of San Jose, CA

3:52 pm PST, Mar 10, 2021 · · 13 km deep · released about 6.6 lb of TNT

10 km30 km60 km120 km N Monterey County 38 kmSan Benito County 72 kmSanta Cruz County 89 kmSanta Clara County 109 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
3:52 pm PST on 10 March 2021 ()
Where
49 km (30 mi) south of Salinas, CA · earthquakes near Salinas
Magnitude
M 1.6 (md)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Monterey County, 38 km E
Nearest mapped fault
San Gregorio fault, 4 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 2073 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. In Salinas, 49 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: Carmel Valley Village.

How big was it?

This earthquake released about 6.6 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 2,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,600,000× the energy of this one
  3. Around the size people start to feel M 3.0 140× the energy of this one
  4. This earthquake M 1.6 about 6.6 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 4 earthquakes of M5 or more within 50 km:

  1. 5.2 5 km SSW of Spreckels, California · 38 km N of this epicentre
  2. 5.1 8 km E of Carmel Valley Village, California · 29 km NNE of this epicentre
  3. 5.1 3 km W of Soledad, California · 40 km ENE of this epicentre
  4. 5.1 14 km NW of Big Sur, California · 20 km NW 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 36.2423, -121.7433. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Monterey County, CA 38 km (24 mi) E earthquakes near Monterey County
San Benito County, CA 72 km (45 mi) NE earthquakes near San Benito County
Santa Cruz County, CA 89 km (55 mi) NNW earthquakes near Santa Cruz County
Santa Clara County, CA 109 km (68 mi) N earthquakes near Santa Clara County
Merced County, CA 140 km (87 mi) NE earthquakes near Merced County
San Luis Obispo County, CA 150 km (94 mi) SE earthquakes near San Luis Obispo County

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

Aftershocks so far

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

  1. 1.6 8km WNW of Greenfield, CA
  2. 1.7 19km SSE of Lopez Point, CA
  3. 2.2 2km NNE of Carmel Valley Village, CA
  4. 2.5 17km SSE of Lopez Point, CA
  5. 2.3 21km ESE of Point Sur, CA
  6. 1.5 16km NNE of Lopez Point, CA
  7. 1.6 11km SW of King City, CA
  8. 1.5 9km NNE of Gonzales, CA
  9. 1.9 8km WNW of Del Monte Forest, CA
  10. 1.9 3km SE of Lopez Point, 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.