Earthquake · reviewed by a seismologist
M 1.9md
14km SW of Santa Cruz, CA
- When
- Magnitude
- M 1.9 (md)
- Depth
- 11 km below the surface
- Felt
- no reports yet
- Nearest
- Santa Cruz County, 18 km NE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2361 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 23 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 5.8 660,000× the energy of this one
- Magna, Utah 2020 M 5.7 470,000× the energy of this one
- Around the size people start to feel M 3.0 42× the energy of this one
- This earthquake M 1.9 about 23 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 36.8880, -122.1397. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Santa Cruz County, CA | 18 km (11 mi) | SW of here | earthquakes near Santa Cruz County |
| Santa Clara County, CA | 55 km (34 mi) | SW of here | earthquakes near Santa Clara County |
| San Mateo County, CA | 62 km (39 mi) | SSE of here | earthquakes near San Mateo County |
| Alameda County, CA | 87 km (54 mi) | SSW of here | earthquakes near Alameda County |
| San Benito County, CA | 99 km (61 mi) | WNW of here | earthquakes near San Benito County |
| Monterey County, CA | 103 km (64 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
51 earthquakes have been recorded within 50 km since this one.
- 2.5 7km WSW of Gilroy, CA
- 1.9 3km E of Aromas, CA
- 2.7 7km N of Boulder Creek, CA
- 2.2 7km WSW of Gilroy, CA
- 1.6 1km NNE of Aromas, CA
- 2.5 4km ESE of Aromas, CA
- 1.7 6km SW of Gilroy, CA
- 2.2 2km SW of Lexington Hills, CA
- 1.6 3km E of Aromas, CA
- 2.5 5km NNW of Aromas, CA
- 1.5 18km W of Boulder Creek, CA
- 1.6 3km E of Aromas, CA
- 1.9 6km SW of Gilroy, CA
- 1.7 14km SW of Santa Cruz, CA
- 1.8 4km ESE of Aromas, 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 4.0 on 2017-03-31 — it released about 1,300 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.