M1.9 earthquake 4 km WSW of Monroe, Washington

Magnitude

1.9 (md), micro

Local time

Tue, Aug 21, 1984, 5:07 PM PDT

UTC

1984-08-22 00:07:21 UTC

Depth

-0.6 km (-0.3 mi), shallow

Epicenter

47.844° N, 122.023° W

Region

Washington

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.1 km horizontally, 0.2 km in depth

Magnitude uncertainty

±0.12

Depth from

Operator assigned

Station coverage gap

110°

Stations used

8

• Monroe, WashingtonPopulation 18,090. Forecast4 kmWSW
• Everett, WashingtonPopulation 108,010. Forecast20 kmSE
• Calgary, CanadaPopulation 1,306,784. Forecast675 kmWSW

After

1. 1.53 km SW of Wilderness Rim, WashingtonTue, Aug 21, 11:12 PM PDT · 15371 days ago · 17 km deep · 49 km away
2. 1.65 km W of Burley, WashingtonWed, Aug 22, 4:13 AM PDT · 15371 days ago · 22 km deep · 70 km away
3. 3.022 km WNW of Leavenworth, WashingtonThu, Aug 23, 9:43 PM PDT · 15369 days ago · 0 km deep · 83 km away
4. 1.93 km SSW of Vashon, WashingtonSat, Aug 25, 3:55 PM PDT · 15367 days ago · 19 km deep · 58 km away
5. 1.78 km NNW of Belfair, WashingtonSat, Aug 25, 5:43 PM PDT · 15367 days ago · 18 km deep · 72 km away
6. 2.28 km NNW of Ault Field, WashingtonTue, Aug 28, 2:23 AM PDT · 15365 days ago · 50 km deep · 81 km away
7. 1.610 km E of Acme, WashingtonTue, Aug 28, 1:29 PM PDT · 15365 days ago · 5 km deep · 95 km away
8. 1.62 km NNW of La Conner, WashingtonWed, Aug 29, 9:25 AM PDT · 15364 days ago · 17 km deep · 73 km away
9. 1.56 km ENE of Allyn, WashingtonThu, Aug 30, 5:54 PM PDT · 15362 days ago · 8 km deep · 73 km away
10. 1.59 km ESE of Verlot, WashingtonTue, Sep 4, 10:35 AM PDT · 15358 days ago · 1 km deep · 37 km away
11. 2.21 km NW of White Center, WashingtonTue, Sep 4, 3:41 PM PDT · 15357 days ago · 22 km deep · 44 km away
12. 1.74 km NE of Woods Creek, WashingtonTue, Sep 4, 4:51 PM PDT · 15357 days ago · -1 km deep · 14 km away
13. 1.812 km WNW of Greenwater, WashingtonTue, Sep 4, 6:52 PM PDT · 15357 days ago · 16 km deep · 73 km away
14. 2.22 km SW of Roosevelt, WashingtonWed, Sep 5, 8:48 AM PDT · 15357 days ago · 17 km deep · 4 km away
15. 1.71 km N of Lake Ketchum, WashingtonThu, Sep 6, 11:01 AM PDT · 15356 days ago · 15 km deep · 56 km away
16. 1.93 km WNW of Bryant, WashingtonMon, Sep 10, 5:30 PM PDT · 15351 days ago · 19 km deep · 48 km away
17. 1.94 km ESE of Carbonado, WashingtonThu, Sep 13, 3:04 AM PDT · 15349 days ago · 1 km deep · 86 km away
18. 2.17 km E of Kapowsin, WashingtonMon, Sep 17, 6:51 AM PDT · 15345 days ago · 19 km deep · 96 km away
19. 3.06 km SW of Camano, WashingtonTue, Sep 18, 9:54 AM PDT · 15344 days ago · 2 km deep · 54 km away
20. 1.72 km E of Sammamish, WashingtonTue, Sep 18, 10:27 AM PDT · 15344 days ago · 11 km deep · 22 km away
21. 1.81 km ESE of Clyde Hill, WashingtonTue, Sep 18, 4:16 PM PDT · 15343 days ago · 0 km deep · 27 km away
22. 2.70 km NE of Boulevard Park, WashingtonWed, Sep 19, 7:16 PM PDT · 15342 days ago · 26 km deep · 44 km away
23. 2.39 km WNW of Belfair, WashingtonFri, Sep 21, 2:17 PM PDT · 15341 days ago · 14 km deep · 80 km away
24. 2.16 km SSW of Sultan, WashingtonSat, Sep 22, 2:50 AM PDT · 15340 days ago · 9 km deep · 14 km away
25. 2.13 km S of South Prairie, WashingtonMon, Sep 24, 2:27 PM PDT · 15338 days ago · 7 km deep · 82 km away
26. 1.67 km WNW of Lofall, WashingtonWed, Sep 26, 4:31 AM PDT · 15336 days ago · 51 km deep · 54 km away
27. 1.56 km S of Bell Hill, WashingtonWed, Sep 26, 4:43 PM PDT · 15335 days ago · -1 km deep · 82 km away
28. 1.71 km N of Bay View, WashingtonWed, Sep 26, 6:53 PM PDT · 15335 days ago · 14 km deep · 80 km away
29. 2.18 km E of Verlot, WashingtonMon, Oct 1, 10:43 PM PDT · 15330 days ago · 2 km deep · 37 km away
30. 1.53 km ESE of Woods Creek, WashingtonWed, Oct 3, 3:08 PM PDT · 15329 days ago · 11 km deep · 13 km away
31. 1.84 km W of Gorst, WashingtonThu, Oct 4, 5:30 PM PDT · 15327 days ago · 2 km deep · 66 km away
32. 1.53 km ENE of Woods Creek, WashingtonMon, Oct 8, 2:13 PM PDT · 15324 days ago · 5 km deep · 13 km away
33. 1.914 km SE of Verlot, WashingtonTue, Oct 9, 9:02 AM PDT · 15323 days ago · 8 km deep · 35 km away
34. 1.53 km SSW of Erlands Point-Kitsap Lake, WashingtonTue, Oct 9, 10:00 AM PDT · 15323 days ago · -1 km deep · 61 km away
35. 2.33 km N of Bryant, WashingtonWed, Oct 10, 10:58 AM PDT · 15322 days ago · 15 km deep · 49 km away
36. 2.17 km ESE of Verlot, WashingtonThu, Oct 11, 5:02 AM PDT · 15321 days ago · 0 km deep · 36 km away
37. 2.52 km NNE of Esperance, WashingtonThu, Oct 11, 8:45 PM PDT · 15320 days ago · 17 km deep · 24 km away
38. 1.70 km W of Quilcene, WashingtonThu, Oct 18, 3:00 AM PDT · 15314 days ago · 46 km deep · 64 km away
39. 1.74 km W of Wilderness Rim, WashingtonFri, Oct 19, 7:48 PM PDT · 15312 days ago · 17 km deep · 47 km away

Before

1. 1.811 km ESE of Black Diamond, WashingtonSun, Aug 19, 5:57 AM PDT · 15374 days ago · 12 km deep · 66 km away
2. 1.72 km SW of Wilderness Rim, WashingtonSat, Aug 18, 7:49 PM PDT · 15374 days ago · 19 km deep · 49 km away
3. 1.732 km NNW of Leavenworth, WashingtonWed, Aug 15, 10:45 PM PDT · 15377 days ago · 8 km deep · 92 km away
4. 1.52 km NW of Kingston, WashingtonWed, Aug 15, 6:52 PM PDT · 15377 days ago · 52 km deep · 37 km away
5. 1.57 km SW of Camano, WashingtonWed, Aug 15, 6:19 PM PDT · 15377 days ago · 28 km deep · 54 km away
6. 1.54 km W of Fall City, WashingtonTue, Aug 14, 12:18 AM PDT · 15379 days ago · 6 km deep · 31 km away
7. 1.75 km NW of Dash Point, WashingtonMon, Aug 13, 9:16 PM PDT · 15379 days ago · 8 km deep · 64 km away
8. 2.28 km W of Brinnon, WashingtonSun, Aug 12, 4:54 AM PDT · 15381 days ago · 46 km deep · 77 km away
9. 1.51 km WNW of Redmond, WashingtonSun, Aug 12, 2:52 AM PDT · 15381 days ago · 23 km deep · 21 km away
10. 1.8Puget Sound region, WashingtonSat, Aug 11, 6:22 AM PDT · 15382 days ago · 18 km deep · 51 km away
11. 2.019 km W of Ault Field, WashingtonFri, Aug 10, 3:52 AM PDT · 15383 days ago · 17 km deep · 89 km away
12. 1.92 km NW of Lakeland South, WashingtonTue, Aug 7, 9:50 PM PDT · 15385 days ago · 9 km deep · 65 km away
13. 2.03 km NNW of White Center, WashingtonTue, Aug 7, 7:59 AM PDT · 15386 days ago · 8 km deep · 42 km away
14. 2.115 km S of Port Angeles East, WashingtonMon, Aug 6, 11:48 AM PDT · 15387 days ago · 38 km deep · 99 km away
15. 1.65 km SW of Mount Vernon, WashingtonMon, Aug 6, 2:03 AM PDT · 15387 days ago · 7 km deep · 67 km away
16. 1.85 km WSW of Mount Vernon, WashingtonFri, Aug 3, 8:12 PM PDT · 15389 days ago · 6 km deep · 68 km away
17. 1.53 km NW of Jamestown, WashingtonFri, Aug 3, 8:12 AM PDT · 15390 days ago · 45 km deep · 88 km away
18. 1.74 km ENE of Granite Falls, WashingtonThu, Aug 2, 12:05 PM PDT · 15391 days ago · -1 km deep · 29 km away
19. 2.02 km SSW of Machias, WashingtonThu, Aug 2, 6:29 AM PDT · 15391 days ago · 11 km deep · 13 km away
20. 2.24 km WNW of Fall City, WashingtonMon, Jul 30, 5:47 AM PDT · 15394 days ago · -1 km deep · 29 km away

From the USGS Earthquake Hazards Program and its partner networks, event uw10180743. Read Tue, Sep 22, 2026, 10:00 AM UTC.