Earthquake · reviewed by a seismologist
M 1.6md
6km NNW of Aromas, CA
- When
- Magnitude
- M 1.6 (md)
- Depth
- 8.7 km below the surface
- Felt
- no reports yet
- Nearest
- Santa Cruz County, 32 km WNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3006 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 6.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,400,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
- Around the size people start to feel M 3.0 150× the energy of this one
- This earthquake M 1.6 about 6.4 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 36.9368, -121.6637. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Santa Cruz County, CA | 32 km (20 mi) | ESE of here | earthquakes near Santa Cruz County |
| Santa Clara County, CA | 32 km (20 mi) | S of here | earthquakes near Santa Clara County |
| San Benito County, CA | 63 km (39 mi) | NW of here | earthquakes near San Benito County |
| Alameda County, CA | 82 km (51 mi) | SSE of here | earthquakes near Alameda County |
| San Mateo County, CA | 82 km (51 mi) | SE of here | earthquakes near San Mateo County |
| Monterey County, CA | 83 km (52 mi) | NNW of here | earthquakes near Monterey 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.
- 1.8 23km SW of Gustine, CA
- 2.3 6km SW of Ridgemark, CA
- 1.7 6km SW of Ridgemark, CA
- 2.2 9km NE of San Martin, CA
- 2.5 15km NW of Pinnacles, CA
- 2.1 15km E of Seven Trees, CA
- 2.7 5km ESE of Aromas, CA
- 1.5 8km ENE of Gilroy, CA
- 2.0 5km ESE of Aromas, CA
- 1.6 10km NNE of Hollister, CA
- 1.7 12km S of Tres Pinos, CA
- 1.5 12km S of Tres Pinos, CA
- 1.6 14km S of Tres Pinos, CA
- 2.7 6km SW of Ridgemark, CA
- 1.6 12km NNW 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.
For this area
The largest earthquake within 50 km in our catalogue was M 4.2 on 2016-07-19 — it released about 10,000 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.