QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

Earthquake near Interlaken, CA

No earthquake was likely felt in Interlaken in the 24 hours to 3:44 pm PST (23:44 UTC). The last one was M 2.5, 15 km (9 mi) SE, at 6:10 am PDT on 26 October 2026, estimated intensity II (weak) in town; 6 felt reports to USGS. Every earthquake near Interlaken

This page: a magnitude 3.0 earthquake was recorded 5 km (3 mi) east-southeast of Interlaken, CA, at 12:52 am PDT on 17 July 2026 (07:52 UTC), 11 km deep. 84 people have reported feeling it to USGS.

USGS: 5 km ESE of Interlaken, CA

8 km (5 mi) E of Watsonville, CA · 42 km (26 mi) SSE of San Jose, CA

12:52 am PDT, Jul 17, 2026 · · 11 km deep · released about 860 lb of TNT

10 km30 km60 km120 km N Santa Cruz County 30 kmSanta Clara County 32 kmSan Benito County 64 kmSan Mateo County 81 kmAlameda County 82 kmMonterey County 84 kmMerced County 91 kmStanislaus County 93 kmContra Costa County 112 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
12:52 am PDT on 17 July 2026 ()
Where
5 km (3 mi) east-southeast of Interlaken, CA · earthquakes near Interlaken
Magnitude
M 3.0 (md)
Depth
11 km below the surface
Felt
84 reports · strongest reported intensity IV
Nearest
Santa Cruz County, 30 km WNW
Nearest mapped fault
Zayante-Vergeles fault, 3 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 106 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 33 km (21 mi) from the epicentre. In Interlaken, 5 km away, the estimate is intensity III (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: Watsonville 7 km, intensity III · Gilroy 13 km, intensity II · Prunedale 18 km, intensity II · Morgan Hill 22 km, intensity II · Capitola 24 km, intensity II · Live Oak 27 km, intensity II · Hollister 27 km, intensity II · Salinas 29 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 860 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 390,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 18,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 12,000× the energy of this one
  4. This earthquake M 3.0 about 860 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 5.1 on 2022-10-25 — about 1,400 times the energy of this one.

Before 2016, the USGS record lists 34 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.9 The 1989 Loma Prieta, California Earthquake · 21 km NW of this epicentre
  2. 6.5 Near Morgan Hill, California · 20 km NNE of this epicentre
  3. 6.3 22 km S of Davenport, California · 48 km WSW of this epicentre
  4. 6.2 Near San Jose, California · 42 km NNW of this epicentre
  5. 6.2 The 1984 Morgan Hill, California Earthquake · 42 km N 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 36.9328, -121.6887. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Santa Cruz County, CA 30 km (18 mi) WNW earthquakes near Santa Cruz County
Santa Clara County, CA 32 km (20 mi) N earthquakes near Santa Clara County
San Benito County, CA 64 km (40 mi) ESE earthquakes near San Benito County
San Mateo County, CA 81 km (50 mi) NW earthquakes near San Mateo County
Alameda County, CA 82 km (51 mi) NNW earthquakes near Alameda County
Monterey County, CA 84 km (52 mi) SSE earthquakes near Monterey County

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

Aftershocks so far

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

  1. 1.5 13 km SE of Tres Pinos, CA
  2. 1.7 4 km ESE of Interlaken, CA
  3. 2.5 12 km SSW of Tres Pinos, CA
  4. 1.6 2 km ENE of Aromas, CA
  5. 1.7 11 km ESE of Gilroy, CA
  6. 1.8 11 km ESE of Gilroy, CA
  7. 2.1 15 km N of Morgan Hill, CA
  8. 2.3 11 km SE of Tres Pinos, CA
  9. 2.3 12 km ESE of Gilroy, CA
  10. 2.9 11 km ESE of Gilroy, CA
  11. 2.8 10 km ESE of Gilroy, CA
  12. 1.9 11 km ESE of Gilroy, CA
  13. 1.5 12 km NNW of Hollister, CA
  14. 1.7 8 km ESE of Prunedale, CA
  15. 1.6 17 km 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.