Earthquake · reviewed by a seismologist
M 1.8ml
11 km SSW of Fowler, Colorado
- When
- Magnitude
- M 1.8 (ml)
- Depth
- 5.0 km below the surface
- Felt
- no reports yet
- Nearest
- Otero County, 34 km ESE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1043 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
- Magna, Utah 2020 M 5.7 710,000× the energy of this one
- Around the size people start to feel M 3.0 63× the energy of this one
- This earthquake M 1.8 about 15 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 38.0312, -104.0583. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Otero County, CO | 34 km (21 mi) | WNW of here | earthquakes near Otero County |
| Crowley County, CO | 39 km (25 mi) | SW of here | earthquakes near Crowley County |
| Pueblo County, CO | 40 km (25 mi) | ESE of here | earthquakes near Pueblo County |
| Las Animas County, CO | 79 km (49 mi) | N of here | earthquakes near Las Animas County |
| Bent County, CO | 87 km (54 mi) | W of here | earthquakes near Bent County |
| Huerfano County, CO | 88 km (55 mi) | ENE of here | earthquakes near Huerfano County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
5 earthquakes have been recorded within 50 km since this one.
- 1.7 16 km NNW of Olney Springs, Colorado
- 1.8 11 km ESE of Boone, Colorado
- 1.9 44 km NE of Hoehne, Colorado
- 1.5 41 km NE of Hoehne, Colorado
- 1.9 42 km NE of Hoehne, 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.