M1.8 earthquake 8 km N of Bethany, Oregon

Magnitude

1.8 (Md, duration), micro

Magnitude from

Pacific Northwest Seismic Network

Local time

Mon, Jul 22, 1991, 2:03 PM PDT

UTC

1991-07-22 21:03:33 UTC

Depth

17.4 km (10.8 mi), shallow

Epicenter

45.637° N, 122.865° W

Region

Oregon

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.6 km horizontally, 0.6 km in depth

Magnitude uncertainty

±0.05

Depth from

From location

Station coverage gap

128°

Stations used

27

• Bethany, OregonPopulation 20,646. Forecast9 kmN
• Vancouver, WashingtonPopulation 196,442. Forecast16 kmW
• Calgary, CanadaPopulation 1,306,784. Forecast884 kmSW

After

1. 1.88 km N of Bethany, OregonTue, Jul 23, 6:13 PM PDT · 12856 days ago · 16 km deep · 0 km away
2. 2.238 km NNE of Amboy, WashingtonFri, Jul 26, 1:03 AM PDT · 12854 days ago · 0 km deep · 82 km away
3. 1.613 km ENE of Tillamook, OregonFri, Jul 26, 5:21 AM PDT · 12853 days ago · 22 km deep · 66 km away
4. 1.78 km N of Bethany, OregonFri, Jul 26, 6:49 PM PDT · 12853 days ago · 16 km deep · 0 km away
5. 2.88 km N of Bethany, OregonFri, Jul 26, 9:01 PM PDT · 12853 days ago · 19 km deep · 0 km away
6. 1.59 km N of Bethany, OregonMon, Jul 29, 1:22 PM PDT · 12850 days ago · 15 km deep · 1 km away
7. 2.28 km N of Bethany, OregonTue, Jul 30, 1:10 PM PDT · 12849 days ago · 17 km deep · 0 km away
8. 1.79 km N of Bethany, OregonWed, Jul 31, 11:03 AM PDT · 12848 days ago · 6 km deep · 1 km away
9. 2.016 km N of Amboy, WashingtonThu, Aug 8, 12:32 PM PDT · 12840 days ago · 17 km deep · 58 km away
10. 1.65 km ENE of Government Camp, OregonSat, Aug 17, 5:50 PM PDT · 12831 days ago · 4 km deep · 98 km away
11. 1.56 km ENE of Government Camp, OregonSat, Aug 17, 6:00 PM PDT · 12831 days ago · 4 km deep · 98 km away
12. 2.15 km ENE of Government Camp, OregonSat, Aug 17, 6:10 PM PDT · 12831 days ago · 5 km deep · 98 km away
13. 2.238 km NNE of Amboy, WashingtonWed, Aug 28, 4:06 AM PDT · 12820 days ago · -2 km deep · 83 km away
14. 1.738 km S of Morton, WashingtonWed, Aug 28, 5:34 PM PDT · 12820 days ago · 3 km deep · 83 km away
15. 2.038 km NNE of Amboy, WashingtonThu, Aug 29, 5:37 AM PDT · 12819 days ago · -1 km deep · 82 km away
16. 1.92 km SE of Donald, OregonFri, Aug 30, 1:54 AM PDT · 12819 days ago · 32 km deep · 48 km away
17. 2.237 km NNE of Amboy, WashingtonThu, Sep 5, 12:20 AM PDT · 12813 days ago · -2 km deep · 81 km away
18. 2.837 km NNE of Amboy, WashingtonMon, Sep 9, 5:17 PM PDT · 12808 days ago · 3 km deep · 82 km away
19. 2.019 km S of Morton, WashingtonTue, Sep 10, 9:02 AM PDT · 12807 days ago · 16 km deep · 95 km away
20. 2.238 km NNE of Amboy, WashingtonTue, Sep 10, 5:13 PM PDT · 12807 days ago · 2 km deep · 82 km away
21. 2.138 km NNE of Amboy, WashingtonThu, Sep 12, 9:12 AM PDT · 12805 days ago · 5 km deep · 82 km away
22. 1.838 km NNE of Amboy, WashingtonFri, Sep 13, 1:08 AM PDT · 12805 days ago · 3 km deep · 82 km away
23. 2.333 km NE of Amboy, WashingtonMon, Sep 16, 3:29 PM PDT · 12801 days ago · 0 km deep · 77 km away
24. 1.836 km NNE of Amboy, WashingtonMon, Sep 16, 5:37 PM PDT · 12801 days ago · -2 km deep · 81 km away

Before

1. 2.39 km N of Bethany, OregonMon, Jul 22, 9:34 AM PDT · 12857 days ago · 17 km deep · 0 km away
2. 1.78 km N of Bethany, OregonMon, Jul 22, 5:29 AM PDT · 12857 days ago · 16 km deep · 0 km away
3. 2.28 km N of Bethany, OregonMon, Jul 22, 4:45 AM PDT · 12857 days ago · 17 km deep · 1 km away
4. 2.28 km N of Bethany, OregonMon, Jul 22, 2:11 AM PDT · 12858 days ago · 16 km deep · 0 km away
5. 3.58 km N of Bethany, OregonMon, Jul 22, 2:04 AM PDT · 12858 days ago · 19 km deep · 0 km away
6. 2.48 km N of Bethany, OregonSun, Jul 21, 10:23 PM PDT · 12858 days ago · 17 km deep · 0 km away
7. 2.08 km N of Bethany, OregonSat, Jul 20, 1:48 PM PDT · 12859 days ago · 17 km deep · 0 km away
8. 1.926 km WNW of Trout Lake, WashingtonFri, Jul 19, 1:27 PM PDT · 12860 days ago · 14 km deep · 94 km away
9. 1.58 km N of Bethany, OregonWed, Jul 17, 12:48 PM PDT · 12862 days ago · 16 km deep · 0 km away
10. 1.636 km NNE of Amboy, WashingtonTue, Jul 16, 5:52 AM PDT · 12863 days ago · -1 km deep · 80 km away
11. 2.037 km NNE of Amboy, WashingtonFri, Jul 12, 6:01 AM PDT · 12867 days ago · -2 km deep · 81 km away
12. 1.631 km NNE of Amboy, WashingtonFri, Jul 5, 1:34 PM PDT · 12874 days ago · 9 km deep · 73 km away
13. 1.86 km WNW of Scappoose, OregonThu, Jul 4, 11:23 AM PDT · 12875 days ago · 16 km deep · 17 km away
14. 1.619 km S of Morton, WashingtonSun, Jun 23, 9:12 PM PDT · 12886 days ago · 12 km deep · 95 km away
15. 1.95 km ESE of Woodburn, OregonSat, Jun 22, 8:04 PM PDT · 12887 days ago · 26 km deep · 57 km away

From the USGS Earthquake Hazards Program and its partner networks, event uw10281318. Read Sat, Oct 3, 2026, 9:44 PM UTC.