Earthquake · automatic estimate, may change
M 1.0md
Earthquake near Gilroy, CA
USGS: 9 km E of Gilroy, CA
10 km (6 mi) E of Gilroy, CA · 44 km (27 mi) SE of San Jose, CA
- When
- 3:34 am PDT on 29 September 2026 ()
- Where
- 9 km (5 mi) E of Gilroy, CA · earthquakes near Gilroy
- Magnitude
- M 1.0 (md)
- Depth
- 7.4 km below the surface
- Felt
- no reports yet
- Nearest
- Santa Clara County, 30 km NW
- Nearest mapped fault
- Calaveras fault, 1 km from its surface trace — near is not the same as on
- Status
- Automatic — a machine’s first estimate, which may change
USGS · last changed by USGS · we first saw it 4 days ago
A magnitude 1.0 earthquake was recorded 9 km (5 mi) E of Gilroy, CA, at 3:34 am PDT on 29 September 2026 (10:34 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
Earthquakes near other towns within 30 km: San Martin, Hollister, San Juan Bautista, Aromas, Morgan Hill, Ridgemark.
How big was it?
This earthquake released about 0.95 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.0 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 16,000,000× the energy of this one
- Magna, Utah 2020 M 5.7 11,000,000× the energy of this one
- Around the size people start to feel M 3.0 1,000× the energy of this one
- This earthquake M 1.0 about 0.95 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 1,200,000 times the energy of this one.
Before 2016, the USGS record lists 26 earthquakes of M5 or more within 50 km; the five largest:
- 6.9 The 1989 Loma Prieta, California Earthquake · 36 km W of this epicentre
- 6.5 Near Morgan Hill, California · 18 km NW of this epicentre
- 6.2 Near San Jose, California · 43 km NW of this epicentre
- 6.2 The 1984 Morgan Hill, California Earthquake · 38 km NNW of this epicentre
- 6.1 Near San Jose, California · 36 km NW 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 37.0123, -121.4717. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Santa Clara County, CA | 30 km (19 mi) | NW | earthquakes near Santa Clara County |
| Santa Cruz County, CA | 48 km (30 mi) | W | earthquakes near Santa Cruz County |
| San Benito County, CA | 56 km (35 mi) | SE | earthquakes near San Benito County |
| Merced County, CA | 69 km (43 mi) | ENE | earthquakes near Merced County |
| Stanislaus County, CA | 74 km (46 mi) | NE | earthquakes near Stanislaus County |
| Alameda County, CA | 81 km (50 mi) | NNW | earthquakes near Alameda County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
4 earthquakes have been recorded within 50 km since this one.
- 1.4 11 km SSW of Tres Pinos, CA
- 1.1 1 km NE of Aromas, CA
- 2.1 26 km WSW of Westley, CA
- 1.1 11 km N of Hollister, 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.