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Earthquakes near Fort Benton, MT

Recorded earthquakes within 100 km of Fort Benton (population 1,460), shown in local time (America/Denver).

Latest quake near Fort Benton: M3.7 · Sep 18, 2026, 07:40 AM local time · 56 km WSW of the city · 10 km deep

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.

past hourpast daypast weekearlier in the last 90 daysbiggest on recordbigger dot = stronger quake
0last 24 hours
0last 7 days
0last 30 days
8last 12 months
M4.2largest in 10 years

In the last 30 days, 0 earthquakes of M1.5 or bigger were recorded within 100 km of Fort Benton. The biggest quake on record near Fort Benton — records go back to 1980 — was the M4.2 of Jan 29, 2026, 19:41 UTC: 9 km N of Black Eagle, Montana.

Biggest on record (since 1980) · M4.2 in 2026Big enough to feel last year (M4+) · 1

Latest earthquakes near Fort Benton

MagLocationLocal timeDepthDistance
M3.77 km NNW of Black Eagle, MontanaSep 18, 2026, 07:40 AM10 km56 km WSW
M2.49 km NNE of Black Eagle, MontanaJul 16, 2026, 01:46 AM10 km49 km WSW
M1.99 km N of Black Eagle, MontanaApr 15, 2026, 10:45 PM3 km50 km WSW
M2.610 km NNE of Black Eagle, MontanaFeb 26, 2026, 11:42 AM19 km48 km WSW
M3.73 km SE of Black Eagle, MontanaFeb 12, 2026, 06:36 PM10 km56 km SW
M3.23 km NW of Malmstrom Air Force Base, MontanaJan 31, 2026, 06:22 PM13 km52 km SW
M2.75 km NNW of Malmstrom Air Force Base, MontanaJan 29, 2026, 05:46 PM16 km50 km SW
M4.29 km N of Black Eagle, MontanaJan 29, 2026, 12:41 PM24 km50 km WSW

Earthquakes per year near Fort Benton (M3.0 and up, within 100 km)

'16'17'18'19'20'21'22'23'24'254'26 YTD

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 Fort Benton

How big they were
M1.5–2.01 (12%)
M2.0–3.03 (38%)
M3.0–4.03 (38%)
M4.0–5.01 (12%)
M5.0+0 (0%)
How deep they were
0–10 km1 (12%)
10–30 km7 (88%)
30–70 km0 (0%)
70+ km0 (0%)

Every quake of M1.5 or bigger within 100 km over the last year — 8 in total. A quake of exactly M2.0 counts in the M2.0–3.0 group.

The 1 biggest earthquakes on record near Fort Benton (M4.0 and up, since 1980)

MagLocationDate (UTC)Distance
M4.29 km N of Black Eagle, MontanaJan 29, 2026, 19:41 UTC50 km

Nearby places

Malmstrom Air Force Base, MT (52 km) · Great Falls, MT (59 km) · Sun Prairie, MT (68 km)

USGS data fetched Nov 03, 2026, 20:45 UTC · page built Nov 03, 2026, 20:45 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.