Earthquake · reviewed by a seismologist
M 1.6md
16 km ENE of Rockport, CA
- When
- Magnitude
- M 1.6 (md)
- Depth
- -0.8 km below the surface
- Felt
- no reports yet
- Nearest
- Mendocino County, 42 km SSE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 72 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 9 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 9 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 39.7788, -123.6345. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Mendocino County, CA | 42 km (26 mi) | NNW of here | earthquakes near Mendocino County |
| Humboldt County, CA | 106 km (66 mi) | SSE of here | earthquakes near Humboldt County |
| Trinity County, CA | 106 km (66 mi) | SSW of here | earthquakes near Trinity County |
| Lake County, CA | 107 km (66 mi) | NW of here | earthquakes near Lake County |
| Glenn County, CA | 107 km (67 mi) | W of here | earthquakes near Glenn County |
| Tehama County, CA | 126 km (78 mi) | WSW of here | earthquakes near Tehama County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
36 earthquakes have been recorded within 50 km since this one.
- 1.9 8 km N of Covelo, CA
- 2.6 32 km NW of Covelo, CA
- 1.5 7 km SE of Redway, CA
- 3.2 31 km NNW of Covelo, CA
- 1.8 10 km N of Covelo, CA
- 2.2 30 km NNW of Covelo, CA
- 1.8 4 km W of Laytonville, CA
- 1.5 29 km NW of Covelo, CA
- 1.8 30 km NNW of Covelo, CA
- 4.4 31 km NNW of Covelo, CA
- 3.9 31 km NNW of Covelo, CA
- 1.5 31 km NW of Covelo, CA
- 4.0 31 km NNW of Covelo, CA
- 1.8 5 km E of Willits, CA
- 1.6 3 km E of Laytonville, 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 4.3 on 2024-06-22 — it released about 11,000 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.