Earthquake · reviewed by a seismologist
M 2.6md
17km SSE of Blue Lake, CA
- When
- Magnitude
- M 2.6 (md)
- Depth
- 26 km below the surface
- Felt
- 77 reports · strongest reported intensity III
- Nearest
- Humboldt County, 5 km SW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2311 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 77 people have reported feeling it to USGS.
How big was it?
This earthquake released about 280 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 55,000× the energy of this one
- Magna, Utah 2020 M 5.7 39,000× the energy of this one
- Around the size people start to feel M 3.0 3.5× the energy of this one
- This earthquake M 2.6 about 280 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 40.7473, -123.8897. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Humboldt County, CA | 5 km (3 mi) | NE of here | earthquakes near Humboldt County |
| Trinity County, CA | 66 km (41 mi) | W of here | earthquakes near Trinity County |
| Del Norte County, CA | 112 km (69 mi) | S of here | earthquakes near Del Norte County |
| Siskiyou County, CA | 147 km (91 mi) | SW of here | earthquakes near Siskiyou County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
35 earthquakes have been recorded within 50 km since this one.
- 1.9 9km W of Rio Dell, CA
- 2.0 11km SSW of Ferndale, CA
- 1.5 10km SSW of Ferndale, CA
- 1.8 16km NW of Bayview, CA
- 2.8 11km NW of Ferndale, CA
- 1.8 13km E of Willow Creek, CA
- 1.9 13km ESE of Willow Creek, CA
- 1.6 11km SSW of Ferndale, CA
- 1.6 21km ESE of Rio Dell, CA
- 2.3 27km SE of Willow Creek, CA
- 1.8 19km SE of Rio Dell, CA
- 2.1 7km SE of Willow Creek, CA
- 1.9 8km S of Ferndale, CA
- 1.9 8km S of Ferndale, CA
- 1.8 10km NE of Hydesville, 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 4.8 on 2016-07-21 — it released about 1,800 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.