Earthquake · reviewed by a seismologist
M 1.9md
9km NE of Gilroy, CA
- When
- Magnitude
- M 1.9 (md)
- Depth
- 6.6 km below the surface
- Felt
- no reports yet
- Nearest
- Santa Clara County, 24 km NW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1348 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
How big was it?
This earthquake released about 22 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.
- Mineral, Virginia 2011 M 5.8 680,000× the energy of this one
- Magna, Utah 2020 M 5.7 480,000× the energy of this one
- Around the size people start to feel M 3.0 43× the energy of this one
- This earthquake M 1.9 about 22 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.
Where
Epicentre 37.0648, -121.5028. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Santa Clara County, CA | 24 km (15 mi) | SE of here | earthquakes near Santa Clara County |
| Santa Cruz County, CA | 45 km (28 mi) | E of here | earthquakes near Santa Cruz County |
| San Benito County, CA | 63 km (39 mi) | NW of here | earthquakes near San Benito County |
| Merced County, CA | 71 km (44 mi) | WSW of here | earthquakes near Merced County |
| Stanislaus County, CA | 71 km (44 mi) | SW of here | earthquakes near Stanislaus County |
| Alameda County, CA | 74 km (46 mi) | SSE of here | earthquakes near Alameda County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
54 earthquakes have been recorded within 50 km since this one.
- 1.8 1km SSE of Ridgemark, CA
- 1.8 13km S of Tres Pinos, CA
- 1.5 1km WNW of Corralitos, CA
- 1.6 11km NE of Hollister, CA
- 1.8 8km SW of Ridgemark, CA
- 1.6 5km NNW of Aromas, CA
- 2.6 3km SSW of Ridgemark, CA
- 1.8 16km E of Seven Trees, CA
- 1.5 6km NNW of Aromas, CA
- 2.4 14km N of Morgan Hill, CA
- 1.8 5km SSE of San Juan Bautista, CA
- 1.9 5km SSE of San Juan Bautista, CA
- 1.5 13km NE of Hollister, CA
- 2.5 9km ENE of San Martin, CA
- 1.8 9km ENE of San Martin, 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.
For this area
The largest earthquake within 50 km in our catalogue was M 5.1 on 2022-10-25 — it released about 53,000 times the energy of this one.
From the QuakeIndex catalogue, built from the USGS FDSN event service.
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.