QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

Earthquake near Los Banos, CA

No earthquake was likely felt in Los Banos in the 24 hours to 1:24 pm PST (21:24 UTC). The last one was M 3.1, 36 km (22 mi) WNW, at 9:18 pm PDT on 21 October 2026, estimated intensity II (weak) in town; 9 felt reports to USGS. Every earthquake near Los Banos

This page: a magnitude 1.6 earthquake was recorded 10 km (6 mi) south-southeast of Los Banos, CA, at 4:16 pm PDT on 27 March 2020 (23:16 UTC), 12 km deep.

USGS: 10km SSE of Los Banos, CA

97 km (60 mi) ESE of San Jose, CA · 47 km (29 mi) SW of Merced, CA

4:16 pm PDT, Mar 27, 2020 · · 12 km deep · released about 7.6 lb of TNT

10 km30 km60 km120 km N Merced County 25 kmSan Benito County 48 kmStanislaus County 68 kmSanta Clara County 83 kmMonterey County 94 kmMadera County 97 kmMariposa County 103 kmFresno County 105 kmSanta Cruz County 107 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
4:16 pm PDT on 27 March 2020 ()
Where
10 km (6 mi) south-southeast of Los Banos, CA · earthquakes near Los Banos
Magnitude
M 1.6 (md)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Merced County, 25 km NNE
Nearest mapped fault
Great Valley thrust fault system, 5 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 2421 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 Los Banos, 10 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.

Earthquakes near other towns within 30 km: South Dos Palos, Dos Palos.

How big was it?

This earthquake released about 7.6 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 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 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 3 earthquakes of M5 or more within 50 km:

  1. 5.9 10 km SE of Tres Pinos, California · 46 km SW of this epicentre
  2. 5.5 3 km ENE of Tres Pinos, California · 47 km WSW of this epicentre
  3. 5.1 1 km NE of Tres Pinos, California · 49 km WSW 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 36.9752, -120.8027. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Merced County, CA 25 km (16 mi) NNE earthquakes near Merced County
San Benito County, CA 48 km (30 mi) SSW earthquakes near San Benito County
Stanislaus County, CA 68 km (42 mi) NNW earthquakes near Stanislaus County
Santa Clara County, CA 83 km (52 mi) WNW earthquakes near Santa Clara County
Monterey County, CA 94 km (58 mi) SSW earthquakes near Monterey County
Madera County, CA 97 km (60 mi) ENE earthquakes near Madera County

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

Aftershocks so far

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

  1. 2.2 1km ENE of Tres Pinos, CA
  2. 2.1 24km SSW of Los Banos, CA
  3. 3.1 5km NE of Tres Pinos, CA
  4. 1.7 28km SW of Gustine, CA
  5. 2.0 5km SE of Tres Pinos, CA
  6. 2.4 26km NNW of New Idria, CA
  7. 1.9 22km W of Los Banos, CA
  8. 1.5 33km NE of Pinnacles, CA
  9. 2.1 22km W of Los Banos, CA
  10. 1.5 25km NE of Hollister, CA
  11. 1.6 28km SW of South Dos Palos, CA
  12. 1.9 11km SSE of Los Banos, 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.