QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

Earthquake near Soledad, CA

No earthquake was likely felt in Soledad in the 24 hours to 10:29 pm PST (06:29 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 1.7 earthquake was recorded 48 km (30 mi) east of Soledad, CA, at 7:26 am PST on 26 February 2020 (15:26 UTC), 10 km deep.

USGS: 15km NW of New Idria, CA

7:26 am PST, Feb 26, 2020 · · 10 km deep · released about 12 lb of TNT

10 km30 km60 km120 km N San Benito County 28 kmMonterey County 55 kmMerced County 77 kmKings County 100 kmFresno County 106 kmSanta Clara County 112 kmStanislaus 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
7:26 am PST on 26 February 2020 ()
Where
48 km (30 mi) east of Soledad, CA · earthquakes near Soledad
Magnitude
M 1.7 (md)
Depth
10 km below the surface
Felt
no reports yet
Nearest
San Benito County, 28 km WNW
Nearest mapped fault
Great Valley thrust fault system, 20 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 2451 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 8 km (5 mi) from the epicentre. In Soledad, 48 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.

How big was it?

This earthquake released about 12 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 1,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 900,000× the energy of this one
  3. Around the size people start to feel M 3.0 80× the energy of this one
  4. This earthquake M 1.7 about 12 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 30,000 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 · 18 km E of this epicentre
  2. 5.9 10 km SE of Tres Pinos, California · 45 km WNW of this epicentre
  3. 5.8 Near Paicines, California · 44 km WNW of this epicentre
  4. 5.8 29 km NE of San Lucas, California · 23 km S of this epicentre
  5. 5.5 12 km S of Tres Pinos, California · 49 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 36.5073, -120.7985. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
San Benito County, CA 28 km (17 mi) WNW earthquakes near San Benito County
Monterey County, CA 55 km (34 mi) WSW earthquakes near Monterey County
Merced County, CA 77 km (48 mi) N earthquakes near Merced County
Kings County, CA 100 km (62 mi) ESE earthquakes near Kings County
Fresno County, CA 106 km (66 mi) ENE earthquakes near Fresno County
Santa Clara County, CA 112 km (70 mi) NW earthquakes near Santa Clara 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. 1.8 23km ENE of San Ardo, CA
  2. 2.2 23km ENE of San Lucas, CA
  3. 1.9 10km SE of Pinnacles, CA
  4. 3.4 4km ESE of New Idria, CA
  5. 1.7 7km SE of Pinnacles, CA
  6. 2.6 12km W of Cantua Creek, CA
  7. 2.1 7km SE of Pinnacles, CA
  8. 2.6 5km ESE of Pinnacles, CA
  9. 1.9 13km SSE of Tres Pinos, CA
  10. 2.7 20km S of Cantua Creek, CA
  11. 2.0 16km SSE of Tres Pinos, CA
  12. 1.6 24km NE of King City, CA
  13. 1.6 28km SW of South Dos Palos, CA
  14. 2.4 16km NW of Pinnacles, CA
  15. 2.3 15km NW 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.