Earthquake · reviewed by a seismologist
M 2.6md
2km SSE of Day Valley, CA
- When
- Magnitude
- M 2.6 (md)
- Depth
- 16 km below the surface
- Felt
- 220 reports · strongest reported intensity III
- Nearest
- Santa Cruz County, 14 km W
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2746 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 220 people have reported feeling it to USGS.
How big was it?
This earthquake released about 270 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 57,000× the energy of this one
- Magna, Utah 2020 M 5.7 40,000× the energy of this one
- Around the size people start to feel M 3.0 3.6× the energy of this one
- This earthquake M 2.6 about 270 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 37.0187, -121.8483. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Santa Cruz County, CA | 14 km (9 mi) | E of here | earthquakes near Santa Cruz County |
| Santa Clara County, CA | 27 km (17 mi) | SSW of here | earthquakes near Santa Clara County |
| San Mateo County, CA | 64 km (40 mi) | SE of here | earthquakes near San Mateo County |
| Alameda County, CA | 70 km (44 mi) | S of here | earthquakes near Alameda County |
| San Benito County, CA | 82 km (51 mi) | NW of here | earthquakes near San Benito County |
| Stanislaus County, CA | 96 km (60 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
41 earthquakes have been recorded within 50 km since this one.
- 2.5 12km NNE of Morgan Hill, CA
- 2.3 12km NNE of Morgan Hill, CA
- 1.9 3km S of San Juan Bautista, CA
- 2.5 8km SSE of San Juan Bautista, CA
- 2.9 12km NNE of Morgan Hill, CA
- 1.9 7km WSW of Gilroy, CA
- 1.5 3km S of Loyola, CA
- 2.3 8km E of Alum Rock, CA
- 2.0 5km WSW of Ridgemark, CA
- 2.5 12km NNE of Morgan Hill, CA
- 1.5 6km SW of Gilroy, CA
- 2.4 2km SW of San Juan Bautista, CA
- 1.8 11km SW of Ridgemark, CA
- 1.8 8km SSE of Portola Valley, CA
- 2.1 3km SW of Monte Sereno, 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 4.1 on 2017-10-10 — it released about 150 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.