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, 1 earthquakes of M1.5 or bigger were recorded within 100 km of Sugar City, the biggest of them M1.9. Over the past year, M3.0+ quakes near Sugar City came at 0.4× the usual pace — quieter than normal for this area. The biggest quake on record near Sugar City — records go back to 1980 — was the M4.6 of Oct 26, 1982, 08:26 UTC: 44 km W of Hebgen Lake Estates, Montana.
How we figure this: 1 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 2.7 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 Sugar City
| Mag | Location | Local time | Depth | Distance |
|---|---|---|---|---|
| M0.8 | 24 km SSE of West Yellowstone, Montana | Oct 31, 2026, 10:21 AM | 5 km | 90 km NE |
| M0.8 | 25 km SSE of West Yellowstone, Montana | Oct 31, 2026, 09:49 AM | 4 km | 90 km NE |
| M0.2 | 40 km NE of Spencer, Idaho | Oct 28, 2026, 07:49 AM | 9 km | 89 km N |
| M0.4 | 5 km SE of West Yellowstone, Montana | Oct 24, 2026, 09:40 AM | 7 km | 100 km NNE |
| M1.1 | 46 km NW of Island Park, Idaho | Oct 20, 2026, 04:12 AM | 6 km | 94 km N |
| M0.9 | 27 km SSE of West Yellowstone, Montana | Oct 16, 2026, 11:32 PM | 8 km | 86 km NE |
| M0.6 | 27 km SSE of West Yellowstone, Montana | Oct 16, 2026, 11:31 PM | 8 km | 86 km NE |
| M1.2 | 51 km NE of Alta, Wyoming | Oct 13, 2026, 10:05 PM | 9 km | 96 km ENE |
| M1.3 | 51 km NE of Alta, Wyoming | Oct 13, 2026, 06:57 AM | 9 km | 95 km ENE |
| M0.8 | 52 km N of Kelly, Wyoming | Oct 12, 2026, 05:02 PM | 9 km | 96 km ENE |
Earthquakes per year near Sugar City (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 Sugar City
Every quake of M1.5 or bigger within 100 km over the last year — 34 in total. A quake of exactly M2.0 counts in the M2.0–3.0 group.
The 8 biggest earthquakes on record near Sugar City (M4.0 and up, since 1980)
| Mag | Location | Date (UTC) | Distance |
|---|---|---|---|
| M4.6 | 44 km W of Hebgen Lake Estates, Montana | Oct 26, 1982, 08:26 UTC | 97 km |
| M4.4 | 28 km NNE of Spencer, Idaho | Apr 05, 2011, 07:05 UTC | 86 km |
| M4.4 | 44 km NE of Spencer, Idaho | Feb 05, 2006, 03:25 UTC | 91 km |
| M4.4 | 32 km WNW of Freedom, Idaho | Nov 10, 1992, 10:54 UTC | 91 km |
| M4.4 | 14 km SE of Irwin, Idaho | Feb 08, 1983, 10:54 UTC | 78 km |
| M4.4 | 48 km NW of Island Park, Idaho | Oct 21, 1982, 06:05 UTC | 94 km |
| M4.3 | 45 km W of Hebgen Lake Estates, Montana | Jun 13, 2016, 12:14 UTC | 95 km |
| M4.2 | 9 km N of Alta, Wyoming | Aug 23, 1998, 18:16 UTC | 58 km |
Nearby places
Rexburg, ID (6 km) · Saint Anthony, ID (12 km) · Rigby, ID (26 km) · Ammon, ID (48 km) · Lincoln, ID (44 km) · Iona, ID (41 km)
USGS data fetched Nov 03, 2026, 18:45 UTC · page built Nov 03, 2026, 18:45 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.