Earthquake · reviewed by a seismologist
M 2.2md
7km ENE of Aromas, CA
- When
- Magnitude
- M 2.2 (md)
- Depth
- 5.8 km below the surface
- Felt
- no reports yet
- Nearest
- Santa Clara County, 35 km NNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1984 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 69 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 220,000× the energy of this one
- Magna, Utah 2020 M 5.7 150,000× the energy of this one
- Around the size people start to feel M 3.0 14× the energy of this one
- This earthquake M 2.2 about 69 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 36.9223, -121.5730. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Santa Clara County, CA | 35 km (22 mi) | SSE of here | earthquakes near Santa Clara County |
| Santa Cruz County, CA | 40 km (25 mi) | ESE of here | earthquakes near Santa Cruz County |
| San Benito County, CA | 55 km (34 mi) | NW of here | earthquakes near San Benito County |
| Monterey County, CA | 79 km (49 mi) | NNW of here | earthquakes near Monterey County |
| Merced County, CA | 81 km (51 mi) | WSW of here | earthquakes near Merced County |
| Alameda County, CA | 86 km (53 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
44 earthquakes have been recorded within 50 km since this one.
- 1.6 9km SSW of Tres Pinos, CA
- 2.0 13km S of Tres Pinos, CA
- 1.8 14km S of Tres Pinos, CA
- 2.1 9km NW of Pinnacles, CA
- 3.0 14km S of Tres Pinos, CA
- 1.6 7km NE of Ridgemark, CA
- 2.4 6km SW of Gilroy, CA
- 1.9 6km SW of Gilroy, CA
- 2.0 3km WSW of San Juan Bautista, CA
- 1.5 9km NE of Gilroy, CA
- 1.6 4km S of San Juan Bautista, CA
- 1.8 11km NW of Pinnacles, CA
- 1.8 16km SSE of Tres Pinos, CA
- 1.5 11km S of Tres Pinos, CA
- 1.5 10km NE 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 4.7 on 2019-10-15 — it released about 5,100 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.