Earthquake · reviewed by a seismologist
M 1.7md
9 km SW of La Selva Beach, CA
- When
- Magnitude
- M 1.7 (md)
- Depth
- 11 km below the surface
- Felt
- no reports yet
- Nearest
- Santa Cruz County, 19 km NNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 563 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 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
- Around the size people start to feel M 3.0 89× the energy of this one
- This earthquake M 1.7 about 11 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 36.8635, -121.9112. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Santa Cruz County, CA | 19 km (12 mi) | SSE of here | earthquakes near Santa Cruz County |
| Santa Clara County, CA | 44 km (28 mi) | SSW of here | earthquakes near Santa Clara County |
| San Mateo County, CA | 74 km (46 mi) | SE of here | earthquakes near San Mateo County |
| San Benito County, CA | 79 km (49 mi) | WNW of here | earthquakes near San Benito County |
| Alameda County, CA | 87 km (54 mi) | S of here | earthquakes near Alameda County |
| Monterey County, CA | 87 km (54 mi) | NW of here | earthquakes near Monterey County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
53 earthquakes have been recorded within 50 km since this one.
- 2.3 2 km E of Aromas, CA
- 1.9 2 km E of Aromas, CA
- 1.9 4 km SSW of San Juan Bautista, CA
- 1.5 4 km SSW of San Juan Bautista, CA
- 2.0 4 km SSW of San Juan Bautista, CA
- 2.4 14 km NNE of Morgan Hill, CA
- 2.5 9 km ENE of Morgan Hill, CA
- 2.6 7 km S of Gilroy, CA
- 1.6 3 km W of San Juan Bautista, CA
- 1.7 10 km SSE of San Juan Bautista, CA
- 1.6 11 km of Boulder Creek, CA
- 1.8 11 km SW of Ridgemark, CA
- 1.9 4 km WNW of San Juan Bautista, CA
- 2.4 8 km NNE of Interlaken, CA
- 1.8 9 km S of San Juan Bautista, 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 2021-01-17 — it released about 5,600 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.