Earthquake · reviewed by a seismologist
M 4.8mwr
Earthquake near Jackson, WY
No earthquake was likely felt in Jackson in the 24 hours to 6:03 am MST (13:03 UTC). The last one was M 2.7, 23 km (14 mi) S, at 6:18 pm MST on 6 November 2026, estimated intensity II (weak) in town; 1 felt report to USGS. Every earthquake near Jackson
This page: a magnitude 4.8 earthquake was recorded 43 km (27 mi) southeast of Jackson, WY, at 2:47 pm MDT on 27 August 2016 (20:47 UTC), 12 km deep. 578 people have reported feeling it to USGS.
USGS: 4 km ENE of Bondurant, Wyoming
- When
- 2:47 pm MDT on 27 August 2016 ()
- Where
- 43 km (27 mi) southeast of Jackson, WY · earthquakes near Jackson
- Magnitude
- M 4.8 (mwr)
- Depth
- 12 km below the surface
- Felt
- 578 reports · strongest reported intensity IV
- Measured shaking
- intensity V (ShakeMap)
- USGS impact alert
- green
- Nearest
- Sublette County, 62 km SE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1653 days ago
Earthquake alerts for Jackson, WY
Get a notification in this browser when USGS records an earthquake near Jackson, 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 light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon.
At this magnitude and depth, people at rest would likely notice it out to about 169 km (105 mi) from the epicentre. In Jackson, 43 km away, the estimate is intensity III (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: Hoback 35 km, intensity III · Jackson 43 km, intensity III. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 240 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.8 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 710× the energy of this one
- Mineral, Virginia 2011 M 5.8 32× the energy of this one
- Magna, Utah 2020 M 5.7 22× the energy of this one
- This earthquake M 4.8 about 240 tons of TNT
- Around the size people start to feel M 3.0 this one released 500× more
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
The largest earthquake within 50 km (31 mi) since our catalogue begins in 2016. The previous largest was M 4.0 on 2016-02-26.
Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:
- 5.0 20 km ESE of Kelly, Wyoming · 39 km N of this epicentre
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 43.2226, -110.3593. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Sublette County, WY | 62 km (39 mi) | SE | earthquakes near Sublette County |
| Teton County, ID | 91 km (57 mi) | NW | earthquakes near Teton County |
| Teton County, WY | 92 km (57 mi) | N | earthquakes near Teton County |
| Bonneville County, ID | 104 km (65 mi) | W | earthquakes near Bonneville County |
| Caribou County, ID | 108 km (67 mi) | WSW | earthquakes near Caribou County |
| Lincoln County, WY | 113 km (71 mi) | SSW | earthquakes near Lincoln County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
58 earthquakes have been recorded within 50 km since this one.
- 2.4 15 km ENE of Bondurant, Wyoming
- 2.0 9 km E of Kelly, Wyoming
- 1.6 37 km NNE of Bondurant, Wyoming
- 1.6 26 km NNE of Bondurant, Wyoming
- 1.7 11 km E of Kelly, Wyoming
- 1.8 Wyoming
- 1.9 17 km E of Jackson, Wyoming
- 1.7 16 km ESE of Kelly, Wyoming
- 1.6 8 km ESE of South Park, Wyoming
- 1.9 14 km ESE of Kelly, Wyoming
- 1.6 11 km SW of Rafter J Ranch, Wyoming
- 1.9 16 km ENE of Bondurant, Wyoming
- 1.6 7 km E of Kelly, Wyoming
- 1.7 8 km SSW of Hoback, Wyoming
- 3.5 14 km ESE of Alpine, 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.