Earthquake · reviewed by a seismologist
M 3.0ml
Earthquake near Saratoga, WY
No earthquake was likely felt in Saratoga in the 24 hours to 3:09 pm MST (22:09 UTC). The last one was M 3.4, 9 km (6 mi) SSE, at 11:50 pm MDT on 13 September 2024, estimated intensity III (weak) in town; 10 felt reports to USGS. Every earthquake near Saratoga
This page: a magnitude 3.0 earthquake was recorded 28 km (17 mi) west-southwest of Saratoga, WY, at 5:36 pm MST on 4 February 2020 (00:36 UTC), 5.0 km deep. 2 people have reported feeling it to USGS.
USGS: 28 km WSW of Saratoga, Wyoming
- When
- 5:36 pm MST on 4 February 2020 ()
- Where
- 28 km (17 mi) west-southwest of Saratoga, WY · earthquakes near Saratoga
- Magnitude
- M 3.0 (ml)
- Depth
- 5.0 km below the surface
- Felt
- 2 reports · strongest reported intensity I
- Nearest
- Carbon County, 39 km NNE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2391 days ago
Earthquake alerts for Saratoga, WY
Get a notification in this browser when USGS records an earthquake near Saratoga, WY. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.
At this magnitude and depth, people at rest would likely notice it out to about 36 km (22 mi) from the epicentre. In Saratoga, 28 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.
Likely felt in: Saratoga 28 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 350,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
- Magna, Utah 2020 M 5.7 11,000× the energy of this one
- This earthquake M 3.0 about 950 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.
For this area
No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.
Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.
Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.
Where
Epicentre 41.3833, -107.1282. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Carbon County, WY | 39 km (24 mi) | NNE | earthquakes near Carbon County |
| Routt County, CO | 101 km (63 mi) | S | earthquakes near Routt County |
| Jackson County, CO | 104 km (65 mi) | SE | earthquakes near Jackson County |
| Albany County, WY | 121 km (75 mi) | ENE | earthquakes near Albany County |
| Moffat County, CO | 125 km (78 mi) | SW | earthquakes near Moffat County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
9 earthquakes have been recorded within 50 km since this one.
- 3.4 9 km SSE of Saratoga, Wyoming
- 3.3 8 km SSE of Saratoga, Wyoming
- 3.6 9 km SSE of Saratoga, Wyoming
- 2.5 3 km NE of Saratoga, Wyoming
- 2.8 20 km WNW of Encampment, Wyoming
- 2.7 3 km WSW of Saratoga, Wyoming
- 3.3 8 km ESE of Saratoga, Wyoming
- 2.9 28 km ENE of Dixon, Wyoming
- 2.7 14 km SE of Sinclair, Wyoming
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.