Earthquake · automatic estimate, may change
M 1.4md
Earthquake near San Jose, CA
USGS: 26 km WSW of Westley, CA
35 km (22 mi) ENE of San Jose, CA · 34 km (21 mi) S of Tracy, CA
- When
- 9:49 pm PDT on 27 September 2026 ()
- Where
- 40 km (25 mi) ENE of San Jose, CA · earthquakes near San Jose
- Magnitude
- M 1.4 (md)
- Depth
- 4.1 km below the surface
- Felt
- no reports yet
- Nearest
- Santa Clara County, 30 km SW
- Nearest mapped fault
- Greenville fault, 4 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 5 days ago
A magnitude 1.4 earthquake was recorded 40 km (25 mi) ENE of San Jose, CA, at 9:49 pm PDT on 27 September 2026 (04:49 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
Earthquakes near other towns within 30 km: Patterson.
How big was it?
This earthquake released about 3.2 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.4 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 4,700,000× the energy of this one
- Magna, Utah 2020 M 5.7 3,300,000× the energy of this one
- Around the size people start to feel M 3.0 300× the energy of this one
- This earthquake M 1.4 about 3.2 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 370,000 times the energy of this one.
Before 2016, the USGS record lists 10 earthquakes of M5 or more within 50 km; the five largest:
- 6.5 Near Morgan Hill, California · 38 km SSW of this epicentre
- 6.2 Near San Jose, California · 34 km WSW of this epicentre
- 6.2 The 1984 Morgan Hill, California Earthquake · 23 km WSW of this epicentre
- 6.1 Near San Jose, California · 39 km SW of this epicentre
- 5.8 The 1979 Coyote Lake, California Earthquake · 35 km S 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 37.4188, -121.4517. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Santa Clara County, CA | 30 km (19 mi) | SW | earthquakes near Santa Clara County |
| Stanislaus County, CA | 43 km (27 mi) | ENE | earthquakes near Stanislaus County |
| Alameda County, CA | 48 km (30 mi) | WNW | earthquakes near Alameda County |
| San Joaquin County, CA | 60 km (37 mi) | NNE | earthquakes near San Joaquin County |
| Santa Cruz County, CA | 67 km (42 mi) | SW | earthquakes near Santa Cruz County |
| Merced County, CA | 69 km (43 mi) | ESE | earthquakes near Merced 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.
- 2.1 26 km WSW of Westley, CA
- 1.0 9 km E of Gilroy, CA
- 1.2 15 km E of Seven Trees, CA
- 1.0 8 km ENE of Gilroy, 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.