Earthquake · reviewed by a seismologist
M 2.5ml
7 km NNW of Chacra, Colorado
- When
- Magnitude
- M 2.5 (ml)
- Depth
- 5.0 km below the surface
- Felt
- 2 reports · strongest reported intensity III
- Nearest
- Garfield County, 38 km W
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1107 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 2 people have reported feeling it to USGS.
How big was it?
This earthquake released about 170 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 89,000× the energy of this one
- Magna, Utah 2020 M 5.7 63,000× the energy of this one
- Around the size people start to feel M 3.0 5.6× the energy of this one
- This earthquake M 2.5 about 170 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 39.6426, -107.4736. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Garfield County, CO | 38 km (23 mi) | E of here | earthquakes near Garfield County |
| Eagle County, CO | 67 km (41 mi) | W of here | earthquakes near Eagle County |
| Pitkin County, CO | 67 km (42 mi) | NW of here | earthquakes near Pitkin County |
| Rio Blanco County, CO | 72 km (45 mi) | ESE of here | earthquakes near Rio Blanco County |
| Delta County, CO | 93 km (58 mi) | NNE of here | earthquakes near Delta County |
| Routt County, CO | 102 km (64 mi) | SSW of here | earthquakes near Routt County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
6 earthquakes have been recorded within 50 km since this one.
- 2.2 10 km NW of Dotsero, Colorado
- 2.5 30 km NNW of Dotsero, Colorado
- 2.6 12 km S of Mulford, Colorado
- 2.1 6 km NNW of Chacra, Colorado
- 2.5 22 km NNW of New Castle, Colorado
- 2.9 6 km NNE of Chacra, Colorado
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.