Earthquake · reviewed by a seismologist
M 1.8ml
50 km NE of Kelly, Wyoming
Yes. A magnitude 1.8 earthquake was recorded 50 km NE of Kelly, Wyoming, at 5:20 am MDT on 17 July 2022 (11:20 UTC), 12 km deep.
- When
- Magnitude
- M 1.8 (ml)
- Depth
- 12 km below the surface
- Felt
- no reports yet
- Nearest
- Teton County, 27 km NW
- Nearest mapped fault
- Upper Yellowstone Valley faults, 24 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 1578 days ago
Earthquake alerts for Jackson, WY
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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 5 km (3 mi) from the epicentre. 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.
How big was it?
This earthquake released about 14 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 1,100,000× the energy of this one
- Magna, Utah 2020 M 5.7 760,000× the energy of this one
- Around the size people start to feel M 3.0 68× the energy of this one
- This earthquake M 1.8 about 14 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 4.0 on 2016-02-26 — about 2,100 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 · 43 km SSW 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 43.9150, -110.1487. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Teton County, WY | 27 km (17 mi) | NW | earthquakes near Teton County |
| Park County, WY | 78 km (48 mi) | NE | earthquakes near Park County |
| Teton County, ID | 87 km (54 mi) | W | earthquakes near Teton County |
| Fremont County, ID | 112 km (70 mi) | WNW | earthquakes near Fremont County |
| Bonneville County, ID | 132 km (82 mi) | WSW | earthquakes near Bonneville County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
29 earthquakes have been recorded within 50 km since this one.
- 2.5 23 km ESE of Kelly, Wyoming
- 1.9 9 km E of Kelly, Wyoming
- 1.8 22 km E of Kelly, Wyoming
- 1.7 60 km ENE of Warm River, Idaho
- 1.5 Wyoming
- 2.0 16 km ESE of Kelly, Wyoming
- 1.8 Wyoming
- 1.5 Wyoming
- 2.3 Wyoming
- 2.7 54 km NNE of Kelly, Wyoming
- 2.2 Wyoming
- 1.5 Wyoming
- 1.7 54 km NNE of Kelly, Wyoming
- 2.0 41 km E of Kelly, Wyoming
- 2.5 39 km E of Kelly, 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.