Earthquake · reviewed by a seismologist
M 1.6md
27km NNW of Covelo, CA
- When
- Magnitude
- M 1.6 (md)
- Depth
- 3.3 km below the surface
- Felt
- no reports yet
- Nearest
- Mendocino County, 63 km S
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3049 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 8.7 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,700,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,200,000× the energy of this one
- Around the size people start to feel M 3.0 110× the energy of this one
- This earthquake M 1.6 about 8.7 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 40.0015, -123.4088. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Mendocino County, CA | 63 km (39 mi) | N of here | earthquakes near Mendocino County |
| Trinity County, CA | 76 km (47 mi) | SSW of here | earthquakes near Trinity County |
| Humboldt County, CA | 90 km (56 mi) | SSE of here | earthquakes near Humboldt County |
| Glenn County, CA | 97 km (60 mi) | WNW of here | earthquakes near Glenn County |
| Tehama County, CA | 101 km (63 mi) | W of here | earthquakes near Tehama County |
| Lake County, CA | 114 km (71 mi) | NNW of here | earthquakes near Lake County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
54 earthquakes have been recorded within 50 km since this one.
- 2.1 3km NNE of Redway, CA
- 1.6 10km SSE of Laytonville, CA
- 1.8 19km SSE of Hayfork, CA
- 1.6 14km SW of Laytonville, CA
- 1.9 36km SSE of Hayfork, CA
- 1.9 4km NNE of Laytonville, CA
- 1.6 18km NNW of Covelo, CA
- 1.8 12km SE of Laytonville, CA
- 1.8 21km N of Laytonville, CA
- 1.9 22km N of Laytonville, CA
- 1.6 23km NNE of Redway, CA
- 1.7 12km SE of Laytonville, CA
- 1.8 10km ESE of Redway, CA
- 1.9 15km NNW of Laytonville, CA
- 1.7 5km WNW of Covelo, 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 4.5 on 2016-08-28 — it released about 19,000 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.