QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

Earthquake near Salinas, CA

No earthquake was likely felt in Salinas in the 24 hours to 10:43 am PST (18:43 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 1.7 earthquake was recorded 39 km (24 mi) east of Salinas, CA, at 4:44 am PDT on 26 July 2020 (11:44 UTC), 8.4 km deep.

USGS: 11km SE of Tres Pinos, CA

82 km (51 mi) SE of San Jose, CA · 37 km (23 mi) E of Salinas, CA

4:44 am PDT, Jul 26, 2020 · · 8.4 km deep · released about 11 lb of TNT

10 km30 km60 km120 km N San Benito County 18 kmMonterey County 55 kmMerced County 68 kmSanta Clara County 69 kmSanta Cruz County 77 kmStanislaus County 95 kmAlameda County 119 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
4:44 am PDT on 26 July 2020 ()
Where
39 km (24 mi) east of Salinas, CA · earthquakes near Salinas
Magnitude
M 1.7 (md)
Depth
8.4 km below the surface
Felt
no reports yet
Nearest
San Benito County, 18 km SE
Nearest mapped fault
Tres Pinos fault, under 1 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 2295 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 Salinas, 39 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: Ridgemark, Hollister.

How big was it?

This earthquake released about 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 970,000× the energy of this one
  3. Around the size people start to feel M 3.0 86× the energy of this one
  4. This earthquake M 1.7 about 11 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

The largest earthquake within 50 km since 2016 was M 4.7 on 2019-10-15 — about 32,000 times the energy of this one.

Before 2016, the USGS record lists 22 earthquakes of M5 or more within 50 km; the five largest:

  1. 5.9 10 km SE of Tres Pinos, California · 0 km NNE of this epicentre
  2. 5.8 Near Watsonville, California · 49 km WNW of this epicentre
  3. 5.8 Near Paicines, California · 7 km SSW of this epicentre
  4. 5.8 The 1979 Coyote Lake, California Earthquake · 49 km NNW of this epicentre
  5. 5.5 7 km SW of Hollister, California · 22 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 36.7282, -121.2233. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
San Benito County, CA 18 km (11 mi) SE earthquakes near San Benito County
Monterey County, CA 55 km (34 mi) S earthquakes near Monterey County
Merced County, CA 68 km (42 mi) NE earthquakes near Merced County
Santa Clara County, CA 69 km (43 mi) NW earthquakes near Santa Clara County
Santa Cruz County, CA 77 km (48 mi) WNW earthquakes near Santa Cruz County
Stanislaus County, CA 95 km (59 mi) NNE earthquakes near Stanislaus County

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

Aftershocks so far

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

  1. 2.0 8km SSW of Tres Pinos, CA
  2. 2.0 6km SSW of Tres Pinos, CA
  3. 2.8 16km SSE of Tres Pinos, CA
  4. 2.7 16km SSE of Tres Pinos, CA
  5. 2.4 6km SSE of San Juan Bautista, CA
  6. 2.5 5km NNW of Aromas, CA
  7. 1.5 7km ENE of Aromas, CA
  8. 2.1 20km SW of Gustine, CA
  9. 1.6 3km E of Aromas, CA
  10. 2.3 2km NNE of Pinnacles, CA
  11. 2.4 2km NNE of Pinnacles, CA
  12. 2.1 4km S of San Juan Bautista, CA
  13. 2.2 8km NW of Pinnacles, CA
  14. 1.8 16km SSE of Tres Pinos, CA
  15. 1.6 7km NNW of Pinnacles, 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.