Earthquake near Star Valley Ranch, WY

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. In Star Valley Ranch, 18 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: Hoback.

How big was it?

This earthquake released about 6.4 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.

1. Mineral, Virginia 2011 M 5.8 2,400,000× the energy of this one
2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
3. Around the size people start to feel M 3.0 150× the energy of this one
4. This earthquake M 1.6 about 6.4 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 75,000 times the energy of this one.

Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:

1. 5.8 4 km SSE of Auburn, Wyoming · 38 km SSW of this epicentre Feb 3, 1994
2. 5.3 Southeastern Idaho · 43 km WSW of this epicentre Dec 12, 1917

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 43.0793, -110.7875. Map © OpenStreetMap contributors.

Nearby places

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

51 earthquakes have been recorded within 50 km since this one.

1. 2.6 5 km NNE of Star Valley Ranch, Wyoming 18:15 UTC
2. 2.9 15 km WSW of Freedom, Idaho 06:48 UTC
3. 2.0 13 km E of Irwin, Idaho 22:22 UTC
4. 2.5 17 km E of Irwin, Idaho 00:53 UTC
5. 1.8 6 km ESE of South Park, Wyoming 11:19 UTC
6. 1.7 6 km ESE of South Park, Wyoming 09:50 UTC
7. 1.9 11 km W of Bondurant, Wyoming 05:07 UTC
8. 1.7 11 km W of Bondurant, Wyoming 20:28 UTC
9. 2.2 12 km ESE of South Park, Wyoming 06:45 UTC
10. 2.0 9 km ESE of Alpine Northeast, Wyoming 12:00 UTC
11. 2.3 3 km NNE of Star Valley Ranch, Wyoming 06:14 UTC
12. 2.8 5 km NE of Star Valley Ranch, Wyoming 05:30 UTC
13. 1.7 5 km N of Alpine Northeast, Wyoming 04:25 UTC
14. 2.2 12 km NNW of Alpine Northeast, Wyoming 15:54 UTC
15. 1.7 19 km NW of Bondurant, Wyoming 05:30 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 14:47 UTC. 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.