Earthquake · reviewed by a seismologist
M 2.2md
19km WNW of Bonny Doon, CA
- When
- Magnitude
- M 2.2 (md)
- Depth
- 7.5 km below the surface
- Felt
- no reports yet
- Nearest
- Santa Cruz County, 32 km ESE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2232 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 62 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 5.8 240,000× the energy of this one
- Magna, Utah 2020 M 5.7 170,000× the energy of this one
- Around the size people start to feel M 3.0 15× the energy of this one
- This earthquake M 2.2 about 62 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 37.0885, -122.3552. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Santa Cruz County, CA | 32 km (20 mi) | WNW of here | earthquakes near Santa Cruz County |
| San Mateo County, CA | 36 km (23 mi) | S of here | earthquakes near San Mateo County |
| Santa Clara County, CA | 61 km (38 mi) | WSW of here | earthquakes near Santa Clara County |
| Alameda County, CA | 73 km (46 mi) | SSW of here | earthquakes near Alameda County |
| San Francisco County, CA | 93 km (58 mi) | SE of here | earthquakes near San Francisco County |
| Contra Costa County, CA | 99 km (62 mi) | SSW of here | earthquakes near Contra Costa County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
19 earthquakes have been recorded within 50 km since this one.
- 2.2 12km WSW of Saratoga, CA
- 1.9 3km S of Los Altos Hills, CA
- 2.2 2km S of Los Altos Hills, CA
- 1.7 3km S of Los Altos Hills, CA
- 2.1 2km SSW of Los Altos Hills, CA
- 2.8 3km S of Los Altos Hills, CA
- 1.8 2km S of Los Altos Hills, CA
- 1.7 7km N of Day Valley, CA
- 1.6 3km ESE of Highlands-Baywood Park, CA
- 1.6 15km S of Half Moon Bay, CA
- 1.8 8km SSW of Loyola, CA
- 2.7 7km N of Boulder Creek, CA
- 2.2 2km SW of Lexington Hills, CA
- 1.5 18km W of Boulder Creek, CA
- 1.7 14km SW of Santa Cruz, 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.