Earthquake · automatic estimate, may change
M 1.4md
8 km ESE of Cloverdale, CA
42 km (26 mi) NNW of Santa Rosa, CA · 120 km (74 mi) NNW of San Francisco, CA
- When
- Magnitude
- M 1.4 (md)
- Depth
- 4.2 km below the surface
- Felt
- no reports yet
- Nearest
- Sonoma County, 28 km S
- Nearest mapped fault
- Maacama fault, 4 km from its surface trace — near is not the same as on
- Status
- Automatic — a machine’s first estimate, which may change
USGS · last changed by USGS · we first saw it 2 hours 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 3.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.4 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 4,400,000× the energy of this one
- Magna, Utah 2020 M 5.7 3,100,000× the energy of this one
- Around the size people start to feel M 3.0 280× the energy of this one
- This earthquake M 1.4 about 3.4 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.
For this area
The largest earthquake within 50 km since 2016 was M 5.0 on 2016-12-14 — about 290,000 times the energy of this one.
Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:
- 5.2 6 km ESE of Talmage, California · 40 km NNW of this epicentre
Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.
Where
Epicentre 38.7790, -122.9328. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Sonoma County, CA | 28 km (18 mi) | S | earthquakes near Sonoma County |
| Lake County, CA | 40 km (25 mi) | NNE | earthquakes near Lake County |
| Napa County, CA | 61 km (38 mi) | ESE | earthquakes near Napa County |
| Colusa County, CA | 75 km (46 mi) | NE | earthquakes near Colusa County |
| Marin County, CA | 83 km (51 mi) | SSE | earthquakes near Marin County |
| Mendocino County, CA | 85 km (53 mi) | NNW | earthquakes near Mendocino County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
3 earthquakes have been recorded within 50 km since this one.
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.
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.