Earthquake · reviewed by a seismologist
M 1.5ml
Earthquake near Rafter J Ranch, WY
No earthquake was likely felt in Rafter J Ranch in the 24 hours to 9:51 am MST (16:51 UTC). The last one was M 2.7, 18 km (11 mi) SSE, at 6:18 pm MST on 6 November 2026, estimated intensity II (weak) in town; 1 felt report to USGS. Every earthquake near Rafter J Ranch
This page: a magnitude 1.5 earthquake was recorded 3 km (2 mi) north of Rafter J Ranch, WY, at 4:57 am MDT on 22 September 2022 (10:57 UTC), 9.2 km deep. 1 person has reported feeling it to USGS.
USGS: 2 km N of Rafter J Ranch, Wyoming
- When
- 4:57 am MDT on 22 September 2022 ()
- Where
- 3 km (2 mi) north of Rafter J Ranch, WY · earthquakes near Rafter J Ranch
- Magnitude
- M 1.5 (ml)
- Depth
- 9.2 km below the surface
- Felt
- 1 report · strongest reported intensity II
- Nearest
- Teton County, 48 km NW
- Nearest mapped fault
- Teton fault, 12 km from its surface trace — near is not the same as on
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1446 days ago
Earthquake alerts for Rafter J Ranch, WY
Get a notification in this browser when USGS records an earthquake near Rafter J Ranch, 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 minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 4 km (2 mi) from the epicentre. In Rafter J Ranch, 3 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.
Earthquakes near other towns within 30 km: South Park, Jackson, Wilson, Moose Wilson Road, Hoback.
How big was it?
This earthquake released about 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
- Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
- Around the size people start to feel M 3.0 180× the energy of this one
- This earthquake M 1.5 about 5.4 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
The largest earthquake within 50 km since 2016 was M 4.8 on 2016-08-27 — about 89,000 times the energy of this one.
Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:
- 5.0 20 km ESE of Kelly, Wyoming · 37 km ENE 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 43.4487, -110.8035. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Teton County, ID | 48 km (30 mi) | NW | earthquakes near Teton County |
| Bonneville County, ID | 66 km (41 mi) | W | earthquakes near Bonneville County |
| Teton County, WY | 73 km (46 mi) | NNE | earthquakes near Teton County |
| Madison County, ID | 78 km (49 mi) | WNW | earthquakes near Madison County |
| Caribou County, ID | 95 km (59 mi) | SW | earthquakes near Caribou County |
| Fremont County, ID | 101 km (63 mi) | NNW | earthquakes near Fremont County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
54 earthquakes have been recorded within 50 km since this one.
- 1.6 8 km W of Hoback, Wyoming
- 3.1 10 km W of Hoback, Wyoming
- 2.1 8 km WNW of Hoback, Wyoming
- 1.8 8 km W of Hoback, Wyoming
- 3.1 10 km WSW of Hoback, Wyoming
- 2.1 7 km E of Alpine Northeast, Wyoming
- 2.5 26 km NNE of Bondurant, Wyoming
- 2.4 12 km E of Irwin, Idaho
- 2.9 13 km ESE of Kelly, Wyoming
- 1.7 7 km SE of South Park, Wyoming
- 2.5 23 km ESE of Kelly, Wyoming
- 2.1 7 km ESE of Alpine Northeast, Wyoming
- 1.6 18 km NE of Star Valley Ranch, Wyoming
- 1.5 18 km ENE of Star Valley Ranch, Wyoming
- 1.8 8 km NW of Wilson, 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.