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, 0 earthquakes of M1.5 or bigger were recorded within 100 km of Altamont. The biggest quake on record near Altamont — records go back to 1980 — was the M6.0 of Sep 21, 1993, 05:45 UTC: 27 km WNW of Klamath Falls, Oregon.
Latest earthquakes near Altamont
| Mag | Location | Local time | Depth | Distance |
|---|---|---|---|---|
| M1.9 | 14 km SSW of Tennant, CA | Sep 26, 2026, 02:54 AM | 3 km | 84 km SSW |
| M1.8 | 14 km NNE of McCloud, CA | Aug 31, 2026, 05:44 PM | 4 km | 97 km SSW |
| M1.6 | 12 km N of McCloud, CA | Aug 14, 2026, 04:24 AM | 3 km | 99 km SSW |
| M2.1 | 13 km N of McCloud, CA | Aug 13, 2026, 12:35 AM | 2 km | 98 km SSW |
| M1.7 | 13 km NNE of McCloud, CA | Jul 26, 2026, 09:55 PM | 3 km | 98 km SSW |
| M1.8 | 31 km E of Tennant, CA | Jul 15, 2026, 10:33 AM | 1 km | 68 km SSE |
| M1.6 | 36 km E of Bonanza, Oregon | Jun 08, 2026, 12:30 AM | 13 km | 63 km E |
| M2.0 | 26 km ENE of Hornbrook, CA | May 17, 2026, 10:15 AM | 14 km | 50 km WSW |
| M1.7 | 36 km E of Bonanza, Oregon | Apr 30, 2026, 10:53 PM | 6 km | 64 km E |
| M2.3 | 36 km E of Bonanza, Oregon | Apr 08, 2026, 10:51 AM | 3 km | 64 km E |
Earthquakes per year near Altamont (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 Altamont
Every quake of M1.5 or bigger within 100 km over the last year — 30 in total. A quake of exactly M2.0 counts in the M2.0–3.0 group.
The 8 biggest earthquakes on record near Altamont (M4.0 and up, since 1980)
| Mag | Location | Date (UTC) | Distance |
|---|---|---|---|
| M6.0 | 27 km WNW of Klamath Falls, Oregon | Sep 21, 1993, 05:45 UTC | 31 km |
| M5.9 | 22 km WNW of Klamath Falls, Oregon | Sep 21, 1993, 03:28 UTC | 27 km |
| M5.1 | 20 km WNW of Klamath Falls, Oregon | Dec 04, 1993, 22:15 UTC | 24 km |
| M4.3 | 9 km W of Klamath Falls, Oregon | May 15, 2002, 17:54 UTC | 14 km |
| M4.3 | 15 km WNW of Klamath Falls, Oregon | Jan 19, 1994, 22:27 UTC | 19 km |
| M4.3 | 12 km WNW of Klamath Falls, Oregon | Jan 09, 1994, 19:03 UTC | 16 km |
| M4.3 | 25 km SW of Chiloquin, Oregon | Sep 21, 1993, 06:14 UTC | 33 km |
| M4.3 | 25 km E of Tennant, California | Sep 30, 1988, 00:30 UTC | 71 km |
Nearby places
Klamath Falls, OR (4 km) · Ashland, OR (80 km) · Montague, CA (84 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.