The map shows quakes of M1.5 and up from the last 90 days, the 8 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, 9 earthquakes of M1.5 or bigger were recorded within 100 km of Big Sky, the biggest of them M2.4. Over the past year, M3.0+ quakes near Big Sky came at 0.3× the usual pace — quieter than normal for this area. The biggest quake on record near Big Sky — records go back to 1980 — was the M5.6 of Jul 26, 2005, 04:08 UTC: 16 km N of Dillon, Montana.
How we figure this: 3 quakes of M3.0 or bigger within 100 km in the last 12 months (Nov 03, 2025 – Nov 03, 2026), compared with an average of 8.6 a year across the full calendar years 2016–2025, counted the same way. This compares how often quakes happened in two past periods. It is not a forecast, and it does not mean a big earthquake is on its way — nobody can predict earthquakes.
Latest earthquakes near Big Sky
| Mag | Location | Local time | Depth | Distance |
|---|---|---|---|---|
| M0.8 | 26 km W of Hebgen Lake Estates, Montana | Nov 02, 2026, 12:33 PM | 11 km | 57 km SSW |
| M0.4 | 53 km NNE of Spencer, Idaho | Nov 02, 2026, 12:31 PM | 5 km | 68 km SW |
| M0.3 | 6 km E of Hebgen Lake Estates, Montana | Nov 02, 2026, 11:54 AM | 7 km | 60 km SSE |
| M0.2 | 5 km E of Hebgen Lake Estates, Montana | Nov 02, 2026, 11:43 AM | 8 km | 60 km SSE |
| M-0.0 | 25 km WNW of Hebgen Lake Estates, Montana | Nov 01, 2026, 05:51 PM | 12 km | 48 km SSW |
| M1.4 | 50 km S of Virginia City, Montana | Nov 01, 2026, 04:19 PM | 1 km | 66 km SW |
| M1.0 | 21 km N of Twin Bridges, Montana | Nov 01, 2026, 07:42 AM | 3 km | 90 km NW |
| M0.1 | 10 km WNW of Hebgen Lake Estates, Montana | Nov 01, 2026, 05:28 AM | 10 km | 55 km S |
| M-0.1 | 27 km W of Hebgen Lake Estates, Montana | Oct 31, 2026, 07:12 PM | 14 km | 54 km SSW |
| M1.0 | 11 km WSW of Sheridan, Montana | Oct 31, 2026, 05:49 PM | 1 km | 78 km WNW |
Earthquakes per year near Big Sky (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 Big Sky
Every quake of M1.5 or bigger within 100 km over the last year — 149 in total. A quake of exactly M2.0 counts in the M2.0–3.0 group.
The 8 biggest earthquakes on record near Big Sky (M4.0 and up, since 1980)
| Mag | Location | Date (UTC) | Distance |
|---|---|---|---|
| M5.6 | 16 km N of Dillon, Montana | Jul 26, 2005, 04:08 UTC | 98 km |
| M4.8 | 22 km S of Mammoth, Wyoming | Mar 30, 2014, 12:34 UTC | 78 km |
| M4.7 | 37 km ESE of West Yellowstone, Montana | Feb 06, 1983, 20:25 UTC | 98 km |
| M4.6 | 44 km W of Hebgen Lake Estates, Montana | Oct 26, 1982, 08:26 UTC | 67 km |
| M4.5 | 22 km NE of West Yellowstone, Montana | Feb 22, 1980, 10:18 UTC | 65 km |
| M4.4 | 28 km NNE of Spencer, Idaho | Apr 05, 2011, 07:05 UTC | 94 km |
| M4.4 | 8 km NNW of Alder, Montana | May 08, 2007, 15:46 UTC | 61 km |
| M4.4 | 44 km NE of Spencer, Idaho | Feb 05, 2006, 03:25 UTC | 77 km |
Nearby places
Four Corners, MT (44 km) · Virginia City, MT (45 km) · Bozeman, MT (51 km)
USGS data fetched Nov 03, 2026, 22:45 UTC · page built Nov 03, 2026, 22:45 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.