The map shows quakes of M1.5 and up from the last 90 days, the 1 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 Malmstrom Air Force Base, the biggest of them M1.3. The biggest quake on record near Malmstrom Air Force Base — records go back to 1980 — was the M4.2 of Jan 29, 2026, 19:41 UTC: 9 km N of Black Eagle, Montana.
Latest earthquakes near Malmstrom Air Force Base
| Mag | Location | Local time | Depth | Distance |
|---|---|---|---|---|
| M1.3 | 20 km NNE of Marysville, Montana | Oct 30, 2026, 08:17 PM | 10 km | 100 km SW |
| M1.6 | 23 km SSE of Augusta, Montana | Oct 04, 2026, 03:18 AM | 15 km | 83 km WSW |
| M3.7 | 7 km NNW of Black Eagle, Montana | Sep 18, 2026, 07:40 AM | 10 km | 14 km NW |
| M1.5 | 16 km NE of Helena Valley Northwest, Montana | Sep 02, 2026, 05:06 PM | 1 km | 93 km SW |
| M1.6 | 14 km SSE of Craig, Montana | Sep 01, 2026, 09:17 PM | 10 km | 83 km SW |
| M2.4 | 21 km SSE of Craig, Montana | Aug 24, 2026, 02:42 AM | 4 km | 87 km SW |
| M2.0 | 32 km ENE of Helena Valley Northeast, Montana | Jul 22, 2026, 09:59 AM | 16 km | 81 km SSW |
| M2.0 | 20 km NNE of Helena Valley Northeast, Montana | Jul 16, 2026, 11:59 PM | 4 km | 88 km SW |
| M2.4 | 9 km NNE of Black Eagle, Montana | Jul 16, 2026, 01:46 AM | 10 km | 12 km NNW |
| M1.5 | 31 km ENE of Helena Valley Northeast, Montana | Jun 14, 2026, 08:05 PM | 5 km | 82 km SSW |
Earthquakes per year near Malmstrom Air Force Base (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 Malmstrom Air Force Base
Every quake of M1.5 or bigger within 100 km over the last year — 15 in total. A quake of exactly M2.0 counts in the M2.0–3.0 group.
The 1 biggest earthquakes on record near Malmstrom Air Force Base (M4.0 and up, since 1980)
| Mag | Location | Date (UTC) | Distance |
|---|---|---|---|
| M4.2 | 9 km N of Black Eagle, Montana | Jan 29, 2026, 19:41 UTC | 13 km |
Nearby places
Great Falls, MT (9 km) · Sun Prairie, MT (23 km) · Fort Benton, MT (52 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.