Oregon, United States

Earthquakes Near Portland

USGS recorded 36 earthquakes within 100 km of Portland in the last 30 days and 293 in the last year, counting everything of magnitude 1.0 and above. The strongest in that year measured M 3.8.

M -0.4 · 37 km NNE of Amboy, Washington · 2026-09-15 04:50 UTC M 0.0 · 38 km NE of Amboy, Washington · 2026-09-20 06:22 UTC M 0.0 · 38 km NE of Amboy, Washington · 2026-09-19 11:38 UTC M 0.0 · 7 km ENE of Government Camp, Oregon · 2026-09-20 10:14 UTC M 0.1 · 38 km NE of Amboy, Washington · 2026-09-15 09:56 UTC M 0.1 · 38 km NNE of Amboy, Washington · 2026-09-19 03:53 UTC M 0.3 · 6 km NE of Government Camp, Oregon · 2026-09-19 15:43 UTC M 0.3 · 32 km NE of Amboy, Washington · 2026-09-21 02:59 UTC M 0.4 · 21 km ESE of Castle Rock, Washington · 2026-09-17 03:19 UTC M 0.4 · 21 km ESE of Castle Rock, Washington · 2026-09-13 20:39 UTC M 0.6 · 38 km NNE of Amboy, Washington · 2026-09-22 09:08 UTC M 0.6 · 21 km ESE of Castle Rock, Washington · 2026-09-14 14:56 UTC M 0.6 · 21 km ESE of Castle Rock, Washington · 2026-09-20 10:57 UTC M 0.6 · 20 km ESE of Castle Rock, Washington · 2026-09-13 02:22 UTC M 0.7 · 21 km ESE of Castle Rock, Washington · 2026-09-20 23:57 UTC M 0.7 · 5 km NE of Amboy, Washington · 2026-09-19 03:29 UTC M 0.7 · 20 km E of Castle Rock, Washington · 2026-09-19 01:58 UTC M 0.8 · 2 km SSE of King City, Oregon · 2026-09-17 09:16 UTC M 0.9 · 20 km E of Castle Rock, Washington · 2026-09-20 14:02 UTC M 0.9 · 24 km S of Morton, Washington · 2026-09-13 19:01 UTC M 1.0 · 32 km NNE of Amboy, Washington · 2026-09-20 18:59 UTC M 1.0 · 22 km S of Morton, Washington · 2026-09-15 15:15 UTC M 1.1 · 37 km NNE of Amboy, Washington · 2026-09-19 09:04 UTC M 1.1 · 12 km NNE of Clatskanie, Oregon · 2026-09-13 12:55 UTC M 1.1 · 38 km NE of Amboy, Washington · 2026-09-19 13:51 UTC M 1.2 · 28 km S of Mossyrock, Washington · 2026-09-15 16:56 UTC M 1.2 · 13 km SE of Scotts Mills, Oregon · 2026-09-21 07:21 UTC M 1.3 · 6 km NE of Canby, Oregon · 2026-09-17 08:09 UTC M 1.3 · 38 km NNE of Amboy, Washington · 2026-09-20 19:09 UTC M 1.3 · 11 km NW of Amboy, Washington · 2026-09-15 11:03 UTC M 1.3 · 30 km E of Kelso, Washington · 2026-09-19 17:19 UTC M 1.4 · 20 km E of Castle Rock, Washington · 2026-09-13 11:27 UTC M 1.4 · 18 km NW of Yamhill, Oregon · 2026-09-16 20:58 UTC M 1.5 · 12 km ESE of Yacolt, Washington · 2026-09-17 00:58 UTC M 1.5 · 37 km NNE of Amboy, Washington · 2026-09-20 03:26 UTC M 1.6 · 5 km WSW of Yacolt, Washington · 2026-09-16 23:00 UTC M 1.7 · 20 km E of Castle Rock, Washington · 2026-09-16 12:14 UTC M 1.7 · 18 km N of Amboy, Washington · 2026-09-21 20:08 UTC M 2.0 · 10 km SSE of Scappoose, Oregon · 2026-09-17 09:56 UTC M 2.7 · 25 km ENE of Yacolt, Washington · 2026-09-18 18:33 UTC

Recent earthquakes within 100 km of Portland

Last 30 days, newest first as of 2026-09-23 05:14 UTC

Magnitude Location Depth When (UTC)
M 0.6 38 km NNE of Amboy, Washington 1.8 km deep 2026-09-22 09:08 UTC
M 1.7 18 km N of Amboy, Washington 10.4 km deep 2026-09-21 20:08 UTC
M 1.2 13 km SE of Scotts Mills, Oregon 18.0 km deep 2026-09-21 07:21 UTC
M 0.3 32 km NE of Amboy, Washington 6.9 km deep 2026-09-21 02:59 UTC
M 0.7 21 km ESE of Castle Rock, Washington 17.5 km deep 2026-09-20 23:57 UTC
M 1.3 38 km NNE of Amboy, Washington at the surface 2026-09-20 19:09 UTC
M 1.0 32 km NNE of Amboy, Washington 11.1 km deep 2026-09-20 18:59 UTC
M 0.9 20 km E of Castle Rock, Washington 18.2 km deep 2026-09-20 14:02 UTC
M 0.6 21 km ESE of Castle Rock, Washington 17.1 km deep 2026-09-20 10:57 UTC
M 0.0 7 km ENE of Government Camp, Oregon 6.0 km deep 2026-09-20 10:14 UTC
M 0.0 38 km NE of Amboy, Washington 5.6 km deep 2026-09-20 06:22 UTC
M 1.5 37 km NNE of Amboy, Washington at the surface 2026-09-20 03:26 UTC
M 1.3 30 km E of Kelso, Washington 14.1 km deep 2026-09-19 17:19 UTC
M 0.3 6 km NE of Government Camp, Oregon 4.8 km deep 2026-09-19 15:43 UTC
M 1.1 38 km NE of Amboy, Washington 5.3 km deep 2026-09-19 13:51 UTC
M 0.0 38 km NE of Amboy, Washington 5.3 km deep 2026-09-19 11:38 UTC
M 1.1 37 km NNE of Amboy, Washington 0.2 km deep 2026-09-19 09:04 UTC
M 0.1 38 km NNE of Amboy, Washington 2.2 km deep 2026-09-19 03:53 UTC
M 0.7 5 km NE of Amboy, Washington 8.6 km deep 2026-09-19 03:29 UTC
M 0.7 20 km E of Castle Rock, Washington 18.1 km deep 2026-09-19 01:58 UTC
M 2.7 25 km ENE of Yacolt, Washington 9.3 km deep 2026-09-18 18:33 UTC
M 2.0 10 km SSE of Scappoose, Oregon 23.4 km deep 2026-09-17 09:56 UTC
M 0.8 2 km SSE of King City, Oregon 19.4 km deep 2026-09-17 09:16 UTC
M 1.3 6 km NE of Canby, Oregon 15.4 km deep 2026-09-17 08:09 UTC
M 0.4 21 km ESE of Castle Rock, Washington 17.1 km deep 2026-09-17 03:19 UTC
M 1.5 12 km ESE of Yacolt, Washington 12.3 km deep 2026-09-17 00:58 UTC
M 1.6 5 km WSW of Yacolt, Washington at the surface 2026-09-16 23:00 UTC
M 1.4 18 km NW of Yamhill, Oregon at the surface 2026-09-16 20:58 UTC
M 1.7 20 km E of Castle Rock, Washington 17.4 km deep 2026-09-16 12:14 UTC
M 1.2 28 km S of Mossyrock, Washington at the surface 2026-09-15 16:56 UTC
M 1.0 22 km S of Morton, Washington 14.1 km deep 2026-09-15 15:15 UTC
M 1.3 11 km NW of Amboy, Washington 17.2 km deep 2026-09-15 11:03 UTC
M 0.1 38 km NE of Amboy, Washington 5.0 km deep 2026-09-15 09:56 UTC
M -0.4 37 km NNE of Amboy, Washington at the surface 2026-09-15 04:50 UTC
M 0.6 21 km ESE of Castle Rock, Washington 17.5 km deep 2026-09-14 14:56 UTC
M 0.4 21 km ESE of Castle Rock, Washington 17.6 km deep 2026-09-13 20:39 UTC
M 0.9 24 km S of Morton, Washington 13.2 km deep 2026-09-13 19:01 UTC
M 1.1 12 km NNE of Clatskanie, Oregon 21.8 km deep 2026-09-13 12:55 UTC
M 1.4 20 km E of Castle Rock, Washington 17.0 km deep 2026-09-13 11:27 UTC
M 0.6 20 km ESE of Castle Rock, Washington 17.6 km deep 2026-09-13 02:22 UTC

The largest on record within 100 km of Portland

Since 1900, when the instrumental record becomes usable. The largest is M 5.7 at 38 km NNE of Amboy, Washington on 1980-05-18: moderate: can damage poorly built structures.

Largest since 1900 USGS

Magnitude Location Date Depth
M 5.7 38 km NNE of Amboy, Washington 1980-05-18 1.5 km deep
M 5.6 4 km E of Scotts Mills, Oregon 1993-03-25 19.6 km deep
M 5.2 37 km NNE of Amboy, Washington 1980-04-14 0.5 km deep
M 5.2 23 km S of Morton, Washington 1981-02-14 6.0 km deep
M 5.2 5 km E of Bridgeton, Oregon 1962-11-06 15.0 km deep
M 5.1 38 km NNE of Amboy, Washington 1980-04-08 at the surface
M 5.1 28 km ENE of Amboy, Washington 1961-09-17 7.0 km deep
M 5.1 Washington 1980-04-03 at the surface
M 5.1 39 km NNE of Amboy, Washington 1980-04-20 0.6 km deep
M 5.1 38 km NNE of Amboy, Washington 1980-04-06 at the surface

How these numbers were counted

Counts include every earthquake of magnitude 1.0 and above that USGS located within 100 km of Portland. The search is a circle of 100 km around the centre of Portland, so everything listed is genuinely within that distance. Full method, including why counts from different places are not comparable.

Source: USGS Earthquake Hazards Program (FDSN event service). Retrieved 2026-09-23. Public domain.