Earthquake · reviewed by a seismologist
M 1.9md
9km E of Gilroy, CA
- When
- Magnitude
- M 1.9 (md)
- Depth
- 5.3 km below the surface
- Felt
- 2 reports · strongest reported intensity II
- Nearest
- Santa Clara County, 32 km NW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1711 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.
How big was it?
This earthquake released about 21 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 5.8 710,000× the energy of this one
- Magna, Utah 2020 M 5.7 500,000× the energy of this one
- Around the size people start to feel M 3.0 45× the energy of this one
- This earthquake M 1.9 about 21 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 36.9973, -121.4672. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Santa Clara County, CA | 32 km (20 mi) | SE of here | earthquakes near Santa Clara County |
| Santa Cruz County, CA | 48 km (30 mi) | E of here | earthquakes near Santa Cruz County |
| San Benito County, CA | 55 km (34 mi) | NW of here | earthquakes near San Benito County |
| Merced County, CA | 70 km (43 mi) | WSW of here | earthquakes near Merced County |
| Stanislaus County, CA | 75 km (47 mi) | SSW of here | earthquakes near Stanislaus County |
| Alameda County, CA | 82 km (51 mi) | SSE of here | earthquakes near Alameda County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
49 earthquakes have been recorded within 50 km since this one.
- 1.9 3km WSW of Hollister, CA
- 2.7 5km SSW of Lexington Hills, CA
- 1.8 9km SW of Tres Pinos, CA
- 1.8 9km SSW of Tres Pinos, CA
- 1.9 12km ESE of Alum Rock, CA
- 1.7 16km SSE of Tres Pinos, CA
- 2.0 9km SW of Tres Pinos, CA
- 2.0 1km W of San Juan Bautista, CA
- 1.9 8km E of Alum Rock, CA
- 3.4 9km SSW of Tres Pinos, CA
- 1.5 1km W of San Juan Bautista, CA
- 2.8 9km N of San Juan Bautista, CA
- 1.7 1km W of San Juan Bautista, CA
- 2.0 14km S of Tres Pinos, CA
- 2.8 6km SSE 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 4.7 on 2019-10-15 — it released about 16,000 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.