QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

Earthquake near Gilroy, CA

Yes: an earthquake was likely felt in Gilroy in the last 24 hours. M 1.6, 9 km (5 mi) E of Gilroy, at 1:22 am PST on 12 November 2026 (09:22 UTC); the estimated shaking in Gilroy was intensity II (weak). Every earthquake near Gilroy

This page: a magnitude 1.9 earthquake was recorded 8 km (5 mi) northeast of Gilroy, CA, at 2:53 am PST on 29 January 2019 (10:53 UTC), 6.9 km deep. 3 people have reported feeling it to USGS.

USGS: 8km NE of Gilroy, CA

9 km (6 mi) ENE of Gilroy, CA · 39 km (24 mi) SE of San Jose, CA

2:53 am PST, Jan 29, 2019 · · 6.9 km deep · released about 25 lb of TNT

10 km30 km60 km120 km N Santa Clara County 26 kmSanta Cruz County 45 kmSan Benito County 61 kmMerced County 71 kmStanislaus County 72 kmAlameda County 76 kmSan Mateo County 87 kmMonterey County 91 kmSan Joaquin County 101 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
2:53 am PST on 29 January 2019 ()
Where
8 km (5 mi) northeast of Gilroy, CA · earthquakes near Gilroy
Magnitude
M 1.9 (md)
Depth
6.9 km below the surface
Felt
3 reports · strongest reported intensity II
Nearest
Santa Clara County, 26 km NW
Nearest mapped fault
Calaveras fault, 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 2834 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 14 km (9 mi) from the epicentre. In Gilroy, 8 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: Gilroy 8 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 25 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 620,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 440,000× the energy of this one
  3. Around the size people start to feel M 3.0 39× the energy of this one
  4. This earthquake M 1.9 about 25 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 4.2 on 2016-07-19 — about 2,600 times the energy of this one.

Before 2016, the USGS record lists 29 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.9 The 1989 Loma Prieta, California Earthquake · 34 km W of this epicentre
  2. 6.5 Near Morgan Hill, California · 14 km WNW of this epicentre
  3. 6.2 Near San Jose, California · 39 km NW of this epicentre
  4. 6.2 The 1984 Morgan Hill, California Earthquake · 33 km NNW of this epicentre
  5. 6.1 Near San Jose, California · 31 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 37.0487, -121.5002. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Santa Clara County, CA 26 km (16 mi) NW earthquakes near Santa Clara County
Santa Cruz County, CA 45 km (28 mi) W earthquakes near Santa Cruz County
San Benito County, CA 61 km (38 mi) SE earthquakes near San Benito County
Merced County, CA 71 km (44 mi) ENE earthquakes near Merced County
Stanislaus County, CA 72 km (45 mi) NE earthquakes near Stanislaus County
Alameda County, CA 76 km (47 mi) NNW earthquakes near Alameda County

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

Aftershocks so far

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

  1. 2.5 8km SSE of San Juan Bautista, CA
  2. 1.7 4km ENE of Tres Pinos, CA
  3. 2.1 8km NE of Ridgemark, CA
  4. 1.6 8km NE of Ridgemark, CA
  5. 2.5 7km NE of Ridgemark, CA
  6. 2.9 12km NNE of Morgan Hill, CA
  7. 1.9 7km WSW of Gilroy, CA
  8. 1.5 16km SSE of Tres Pinos, CA
  9. 2.3 8km E of Alum Rock, CA
  10. 2.0 5km WSW of Ridgemark, CA
  11. 2.5 12km NNE of Morgan Hill, CA
  12. 1.5 6km SW of Gilroy, CA
  13. 2.4 2km SW of San Juan Bautista, CA
  14. 1.8 11km SW of Ridgemark, CA
  15. 2.3 11km SSE 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.