Earthquake · reviewed by a seismologist
M 1.9md
9km NE of Corralitos, CA
- When
- Magnitude
- M 1.9 (md)
- Depth
- 12 km below the surface
- Felt
- no reports yet
- Nearest
- Santa Clara County, 21 km N
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1300 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 19 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 5.8 810,000× the energy of this one
- Magna, Utah 2020 M 5.7 580,000× the energy of this one
- Around the size people start to feel M 3.0 51× the energy of this one
- This earthquake M 1.9 about 19 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 37.0383, -121.7225. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Santa Clara County, CA | 21 km (13 mi) | S of here | earthquakes near Santa Clara County |
| Santa Cruz County, CA | 25 km (16 mi) | E of here | earthquakes near Santa Cruz County |
| Alameda County, CA | 70 km (43 mi) | SSE of here | earthquakes near Alameda County |
| San Mateo County, CA | 71 km (44 mi) | SE of here | earthquakes near San Mateo County |
| San Benito County, CA | 74 km (46 mi) | NW of here | earthquakes near San Benito County |
| Stanislaus County, CA | 86 km (54 mi) | SW of here | earthquakes near Stanislaus County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
30 earthquakes have been recorded within 50 km since this one.
- 2.5 12km ESE of Alum Rock, CA
- 1.6 12km ESE of Alum Rock, CA
- 1.7 12km ESE of Alum Rock, CA
- 2.4 12km ESE of Alum Rock, CA
- 1.7 2km NNW of Tres Pinos, CA
- 2.4 1km ENE of Tres Pinos, CA
- 2.2 15km N of Morgan Hill, CA
- 1.8 2km N of Tres Pinos, CA
- 4.4 1km NNW of Tres Pinos, CA
- 2.3 2km E of Aromas, CA
- 1.7 0km NNE of Tres Pinos, CA
- 1.9 8km NE of Interlaken, CA
- 1.9 1km NNE of Tres Pinos, CA
- 1.6 16km E of Seven Trees, CA
- 2.8 1km N of Tres Pinos, 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 63,000 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.