The map shows quakes of M1.5 and up from the last 90 days, the 5 biggest on record, and always the very latest quake — even if it was smaller than M1.5. The list below can include smaller ones the map leaves out. Tap any dot for details.
In the last 30 days, 0 earthquakes of M1.5 or bigger were recorded within 100 km of Riverton. The biggest quake on record near Riverton — records go back to 1980 — was the M5.0 of Nov 03, 1984, 09:30 UTC: 10 km W of Atlantic City, Wyoming.
Latest earthquakes near Riverton
| Mag | Location | Local time | Depth | Distance |
|---|---|---|---|---|
| M2.3 | 24 km W of Owl Creek, Wyoming | Oct 01, 2026, 11:24 PM | 6 km | 90 km NNW |
| M3.8 | 29 km E of Atlantic City, Wyoming | Dec 12, 2025, 05:38 PM | 10 km | 54 km S |
| M2.5 | 29 km ENE of Atlantic City, Wyoming | Dec 10, 2025, 07:33 PM | 10 km | 47 km S |
| M3.7 | Wyoming | Feb 13, 2023, 03:07 AM | 10 km | 98 km NE |
| M3.3 | Wyoming | Nov 02, 2022, 02:29 PM | 5 km | 98 km NNE |
| M3.1 | 29 km NE of Boulder, Wyoming | Aug 24, 2021, 02:16 AM | 5 km | 90 km W |
| M3.1 | 26 km SW of Boulder Flats, Wyoming | Oct 14, 2018, 05:14 AM | 5 km | 62 km WSW |
| M3.0 | 13 km WSW of Thermopolis, Wyoming | Jul 01, 2018, 03:58 PM | 5 km | 65 km N |
| M4.0 | 57 km S of Ten Sleep, Wyoming | Nov 03, 2017, 05:11 PM | 17 km | 97 km NE |
| M3.2 | 56 km S of Ten Sleep, Wyoming | Oct 31, 2017, 12:24 PM | 15 km | 93 km NE |
Earthquakes per year near Riverton (M3.0 and up, within 100 km)
M3.0–3.9 M4.0+
Each bar is one year; taller means more quakes (M3.0 and up). The dark red part is the bigger ones (M4.0+), counted inside the number above each bar — not added on top. These may be felt, depending on how far away and how deep they are. 2026 is not a full year yet — it only counts up to today. Source: USGS Earthquake Catalog.
What the last year looked like near Riverton
Every quake of M1.5 or bigger within 100 km over the last year — 3 in total. A quake of exactly M2.0 counts in the M2.0–3.0 group.
The 5 biggest earthquakes on record near Riverton (M4.0 and up, since 1980)
| Mag | Location | Date (UTC) | Distance |
|---|---|---|---|
| M5.0 | 10 km W of Atlantic City, Wyoming | Nov 03, 1984, 09:30 UTC | 71 km |
| M4.8 | 20 km W of Fort Washakie, Wyoming | Sep 21, 2013, 13:16 UTC | 61 km |
| M4.3 | 35 km SE of Riverton, Wyoming | Aug 16, 1985, 06:05 UTC | 35 km |
| M4.0 | 57 km S of Ten Sleep, Wyoming | Nov 03, 2017, 23:11 UTC | 97 km |
| M4.0 | 25 km SSE of Riverton, Wyoming | Oct 10, 1992, 15:40 UTC | 26 km |
Nearby places
Arapahoe, WY (11 km) · Ethete, WY (32 km) · Lander, WY (36 km) · Fort Washakie, WY (41 km)
USGS data fetched Nov 03, 2026, 16:45 UTC · page built Nov 03, 2026, 16:45 UTC. How to read this page: recent-window counts cover M1.5+ events within 100 km; the 10-year layer is based on M3.0+ and the history layer on M4.0+ since 1980. Recording completeness varies by era and region — small quakes from early decades are under-recorded, so “no record” does not prove “never happened”. Depths are relative to sea level and can be slightly negative for shallow events in elevated terrain. Method: data & methodology.