Earthquake · reviewed by a seismologist
M 2.5md
6km ESE of Point Arena, CA
- When
- Magnitude
- M 2.5 (md)
- Depth
- 8.8 km below the surface
- Felt
- 12 reports · strongest reported intensity III
- Nearest
- Mendocino County, 63 km NNE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2334 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 12 people have reported feeling it to USGS.
How big was it?
This earthquake released about 160 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 95,000× the energy of this one
- Magna, Utah 2020 M 5.7 68,000× the energy of this one
- Around the size people start to feel M 3.0 6× the energy of this one
- This earthquake M 2.5 about 160 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 38.8883, -123.6295. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Mendocino County, CA | 63 km (39 mi) | SSW of here | earthquakes near Mendocino County |
| Sonoma County, CA | 73 km (45 mi) | WNW of here | earthquakes near Sonoma County |
| Lake County, CA | 80 km (50 mi) | WSW of here | earthquakes near Lake County |
| Marin County, CA | 121 km (75 mi) | NW of here | earthquakes near Marin County |
| Napa County, CA | 121 km (75 mi) | WNW of here | earthquakes near Napa County |
| Glenn County, CA | 132 km (82 mi) | SW of here | earthquakes near Glenn County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
24 earthquakes have been recorded within 50 km since this one.
- 1.9 15km WSW of Lakeport, CA
- 1.8 20km SW of Willits, CA
- 2.2 20km SW of Willits, CA
- 2.3 7km SE of Talmage, CA
- 1.8 18km SSE of Talmage, CA
- 1.5 15km NNW of Cloverdale, CA
- 1.8 7km SSE of Talmage, CA
- 1.9 7km SSE of Talmage, CA
- 1.5 14km ESE of Boonville, CA
- 2.1 12km S of Boonville, CA
- 2.4 12km SE of Point Arena, CA
- 1.5 17km ESE of Boonville, CA
- 2.2 16km ESE of Boonville, CA
- 1.8 16km ESE of Navarro Head, CA
- 1.9 19km NW of Cloverdale, 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.
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.