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Pacific Northwest Seismic Network

Monthly Seismicity Report for August 2026

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Updated 2026/09/01

During the month of August 2026, the Pacific Northwest Seismic Network detected 313 earthquakes and 40 blasts in Washington and Oregon.

  • The magnitude range was M-0.5 to M3.1.
  • The depth range was -1.7 mi to 43.45 mi
    .
  • The largest earthquake was a magnitude 3.1 that occurred on 2026/08/11 04:23:52 PM UTC, 14.85 mi SSW from Yakima, WA.
  • There were 2 felt events according to
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3.12026/08/11 04:23:52 PM7.34
2.52026/08/09 02:20:38 AM28.83
2.42026/08/22 10:54:24 AM2.26
2.32026/08/10 04:20:53 PM2.65
2.32026/08/01 03:05:55 PM5.46
2.32026/08/15 05:33:43 AM14.13
2.32026/08/25 06:05:04 AM2.04
2.32026/08/09 02:57:50 AM13.80
2.32026/08/16 04:44:26 PM-1.13
2.22026/08/02 12:42:15 AM-0.58
2.22026/08/14 04:16:36 AM13.20
2.22026/08/18 11:34:58 PM11.14
2.12026/08/01 03:38:10 PM16.23
2.02026/08/30 12:35:28 PM22.44
2.02026/08/20 07:15:35 PM5.61
1.92026/08/09 11:58:48 AM4.35
1.92026/08/18 12:01:01 PM3.57
1.82026/08/14 08:04:08 AM2.98
1.82026/08/27 08:08:33 AM-0.24
1.82026/08/25 07:41:25 AM4.00
1.82026/08/06 07:31:50 PM4.88
1.82026/08/27 07:15:29 AM13.65
1.72026/08/14 08:38:08 PM7.93
1.72026/08/01 10:24:50 AM15.52
1.72026/08/12 07:31:33 PM6.15
1.72026/08/26 01:04:27 AM21.92
1.72026/08/21 05:36:46 AM2.21
1.72026/08/01 06:31:33 AM3.40
1.72026/08/08 05:14:29 AM15.80
1.72026/08/10 09:01:33 PM3.96
1.72026/08/11 11:26:44 PM14.21
1.72026/08/20 03:10:46 PM4.03
1.72026/08/22 02:12:34 PM1.25
1.62026/08/08 11:25:45 AM2.49
1.62026/08/26 05:17:10 PM3.60
1.62026/08/29 04:09:29 PM9.90
1.62026/08/30 02:38:09 PM-0.57
1.62026/08/03 09:56:39 PM12.25
1.62026/08/04 05:07:17 PM14.70
1.62026/08/27 02:03:59 AM15.04
1.62026/08/08 02:37:47 AM3.81
1.62026/08/16 09:53:51 PM6.83
1.62026/08/20 05:56:17 PM-0.27
1.52026/08/30 12:03:13 AM2.83
1.52026/08/20 11:38:45 AM3.57
1.52026/08/30 12:03:13 AM2.64
1.52026/08/14 12:58:35 PM7.03
1.52026/08/01 05:00:33 PM16.20
1.52026/08/08 07:59:08 PM1.65
1.52026/08/12 06:01:31 PM2.96
1.52026/08/19 06:37:54 PM11.35
1.52026/08/13 06:39:27 AM10.56
1.52026/08/18 07:34:32 PM-0.53
1.52026/08/30 03:46:05 PM4.60
1.42026/08/18 12:34:15 AM16.53
1.42026/08/19 10:53:45 PM10.43
1.42026/08/28 04:27:23 AM8.67
1.42026/08/01 09:23:14 AM15.06
1.42026/08/16 12:47:46 AM0.67
1.42026/08/25 10:19:15 AM11.33
1.42026/08/01 09:21:05 PM15.69
1.42026/08/30 07:19:25 PM12.18
1.42026/08/20 03:52:00 AM-0.43
1.42026/08/30 05:47:53 AM0.19
1.42026/08/10 08:36:43 PM13.38
1.42026/08/22 10:21:27 AM-0.27
1.42026/08/02 01:20:48 AM14.00
1.42026/08/06 11:26:11 AM3.60
1.42026/08/22 10:38:09 PM0.28
1.42026/08/07 09:30:00 AM4.60
1.32026/08/31 08:42:55 AM9.59
1.32026/08/13 12:11:41 AM12.99
1.32026/08/18 01:01:28 PM4.96
1.32026/08/19 03:38:29 AM9.72
1.32026/08/26 11:04:59 PM11.94
1.32026/08/04 11:38:31 PM11.59
1.32026/08/23 10:43:40 AM4.69
1.32026/08/20 02:04:22 PM4.02
1.32026/08/29 10:27:23 PM31.65
1.32026/08/09 03:55:43 AM1.68
1.32026/08/17 05:28:56 AM18.37
1.32026/08/20 10:30:06 AM3.66
1.32026/08/29 07:00:04 PM9.79
1.32026/08/06 05:31:50 PM3.55
1.22026/08/06 10:52:00 PM6.87
1.22026/08/04 11:16:19 AM10.50
1.22026/08/02 09:59:25 PM15.45
1.22026/08/06 06:36:28 AM6.69
1.22026/08/14 02:33:06 PM10.23
1.22026/08/06 05:02:21 PM-0.39
1.22026/08/22 02:02:33 PM1.72
1.22026/08/26 07:22:12 AM15.86
1.22026/08/22 04:16:56 PM4.06
1.22026/08/29 10:36:30 PM9.33
1.12026/08/23 07:10:49 AM4.65
1.12026/08/20 09:28:24 AM4.76
1.12026/08/17 12:10:18 PM4.53
1.12026/08/24 01:31:02 AM3.96
1.12026/08/17 04:02:09 AM18.14
1.12026/08/05 12:02:30 AM9.33
1.12026/08/01 08:15:41 PM0.55
1.12026/08/22 03:18:01 AM15.34
1.12026/08/30 06:48:18 AM8.86
1.12026/08/21 11:55:19 AM14.89
1.02026/08/09 10:00:19 PM12.62
1.02026/08/16 12:09:22 PM1.63
1.02026/08/25 10:35:22 PM-1.70
1.02026/08/01 04:33:48 PM13.70
1.02026/08/08 11:14:15 AM-1.10
1.02026/08/30 08:25:16 PM2.14
1.02026/08/08 11:24:42 PM12.22
1.02026/08/15 02:37:34 PM9.48
1.02026/08/25 09:41:35 AM7.94
1.02026/08/27 06:07:30 AM6.67
1.02026/08/25 11:10:17 PM-0.11
1.02026/08/31 09:22:12 PM2.04
1.02026/08/15 08:29:36 AM7.51
1.02026/08/20 04:35:26 AM2.97
1.02026/08/20 07:27:57 AM8.17
1.02026/08/21 02:17:56 PM0.74
1.02026/08/24 03:53:11 AM4.19
1.02026/08/26 07:44:46 AM2.78
1.02026/08/03 11:31:36 AM14.78
1.02026/08/08 10:18:32 AM4.80
1.02026/08/04 10:15:24 AM9.93
0.92026/08/01 10:07:24 AM19.93
0.92026/08/10 04:56:50 AM10.30
0.92026/08/18 08:38:28 PM7.61
0.92026/08/20 06:06:28 PM7.53
0.92026/08/22 07:54:34 PM1.58
0.92026/08/23 12:03:41 AM1.88
0.92026/08/05 06:34:51 PM4.77
0.92026/08/20 05:28:26 AM12.55
0.92026/08/22 11:08:31 AM3.87
0.92026/08/27 05:29:34 AM8.58
0.92026/08/21 06:07:13 AM10.72
0.92026/08/31 05:09:33 AM9.61
0.92026/08/06 03:56:32 AM3.09
0.92026/08/08 04:19:10 AM-0.12
0.82026/08/08 11:18:50 AM3.53
0.82026/08/11 02:58:12 AM2.84
0.82026/08/19 10:08:23 AM3.18
0.82026/08/29 08:49:48 PM10.08
0.82026/08/08 02:58:19 PM7.11
0.82026/08/22 10:21:21 AM-1.33
0.82026/08/27 03:05:51 PM4.93
0.82026/08/12 01:52:24 AM4.11
0.82026/08/21 09:35:11 PM10.60
0.82026/08/22 10:53:03 PM0.58
0.82026/08/30 06:32:29 PM2.64
0.82026/08/26 11:40:58 PM3.44
0.82026/08/22 04:12:42 AM7.20
0.82026/08/26 04:06:49 PM12.92
0.82026/08/05 03:14:20 AM10.77
0.82026/08/22 11:25:07 AM1.01
0.82026/08/26 06:58:46 AM10.99
0.82026/08/31 02:19:11 AM5.60
0.82026/08/10 07:02:32 PM10.70
0.82026/08/06 10:17:25 AM5.31
0.82026/08/08 05:58:51 PM3.89
0.82026/08/08 10:51:59 PM12.52
0.82026/08/23 01:54:54 PM10.41
0.82026/08/23 03:31:45 PM7.64
0.82026/08/13 02:13:13 AM5.42
0.72026/08/06 03:51:41 PM10.30
0.72026/08/12 04:49:34 AM0.42
0.72026/08/18 11:31:25 PM13.51
0.72026/08/31 12:11:23 PM43.45
0.72026/08/08 09:13:53 AM4.52
0.72026/08/23 06:29:01 PM4.35
0.72026/08/29 06:16:47 PM18.08
0.72026/08/04 02:33:53 PM13.33
0.72026/08/31 07:24:17 AM12.69
0.72026/08/02 05:12:39 PM5.73
0.72026/08/03 03:24:23 AM4.37
0.72026/08/22 10:47:34 AM-1.16
0.72026/08/28 11:04:52 PM0.65
0.72026/08/31 03:08:58 AM4.15
0.72026/08/23 07:48:17 PM7.74
0.72026/08/26 09:47:34 AM4.14
0.72026/08/06 09:29:32 PM3.82
0.72026/08/21 05:27:57 PM10.13
0.72026/08/04 06:03:32 AM12.29
0.72026/08/22 09:32:04 AM11.83
0.72026/08/28 10:41:43 PM0.89
0.72026/08/03 12:44:46 AM4.05
0.72026/08/14 07:59:50 AM9.47
0.72026/08/13 02:21:56 AM13.66
0.62026/08/02 01:02:11 AM0.49
0.62026/08/04 10:17:56 AM9.82
0.62026/08/18 09:22:34 AM8.03
0.62026/08/23 01:37:01 AM7.31
0.62026/08/23 05:30:39 PM2.03
0.62026/08/27 03:38:31 PM5.30
0.62026/08/02 01:40:20 AM4.54
0.62026/08/22 11:58:13 PM8.60
0.62026/08/29 05:11:52 PM10.77
0.62026/08/21 11:40:50 AM11.85
0.62026/08/28 10:28:51 AM5.44
0.62026/08/22 10:21:16 AM-1.28
0.62026/08/05 03:33:22 PM1.77
0.62026/08/14 08:33:05 AM9.25
0.62026/08/19 06:16:10 AM12.80
0.62026/08/26 07:16:51 AM0.71
0.62026/08/11 04:13:40 AM5.27
0.62026/08/19 10:26:01 PM-0.66
0.52026/08/10 02:08:46 AM15.72
0.52026/08/16 11:14:40 AM4.90
0.52026/08/19 05:30:40 AM2.73
0.52026/08/19 06:13:54 AM12.46
0.52026/08/19 01:45:59 PM12.87
0.52026/08/20 07:36:18 PM2.73
0.42026/08/03 05:09:48 AM4.54
0.42026/08/30 09:26:08 AM-0.66
0.42026/08/02 01:04:46 AM0.45
0.42026/08/08 01:15:26 AM-1.10
0.42026/08/08 08:19:32 PM5.80
0.42026/08/31 12:40:51 AM5.44
0.42026/08/08 05:45:57 PM-1.08
0.42026/08/21 06:29:42 AM6.26
0.42026/08/28 07:28:20 AM6.37
0.42026/08/30 11:30:16 AM5.13
0.42026/08/03 05:11:09 AM13.19
0.42026/08/15 10:26:12 PM3.42
0.42026/08/30 08:10:05 AM10.50
0.42026/08/31 11:02:15 AM2.26
0.42026/08/03 08:10:42 AM4.26
0.42026/08/11 08:03:22 AM6.99
0.42026/08/26 08:40:53 AM2.78
0.42026/08/31 02:04:43 PM4.18
0.32026/08/03 08:11:40 AM11.21
0.32026/08/07 02:18:20 PM7.90
0.32026/08/18 10:08:13 AM13.32
0.32026/08/21 07:35:59 PM4.98
0.32026/08/30 02:56:45 AM1.59
0.32026/08/24 09:42:23 PM4.35
0.32026/08/07 07:44:39 PM-0.98
0.32026/08/14 08:34:39 PM0.56
0.32026/08/31 12:27:38 PM1.45
0.32026/08/08 02:40:32 PM6.94
0.32026/08/20 08:07:00 AM0.29
0.32026/08/30 07:02:00 AM5.21
0.32026/08/30 10:56:38 PM11.71
0.32026/08/14 08:01:53 AM8.87
0.32026/08/22 02:46:56 PM1.98
0.32026/08/22 06:00:44 PM1.17
0.32026/08/23 02:51:24 AM1.67
0.32026/08/03 01:04:12 PM-0.30
0.32026/08/15 10:23:56 PM4.98
0.32026/08/22 11:16:51 AM1.68
0.32026/08/22 02:39:56 PM2.50
0.32026/08/24 03:26:36 PM4.28
0.32026/08/31 12:14:41 AM1.42
0.32026/08/22 12:46:08 PM1.86
0.32026/08/02 09:41:13 PM4.19
0.32026/08/10 05:36:30 PM4.19
0.32026/08/22 05:41:25 PM1.35
0.32026/08/30 10:50:33 PM0.94
0.22026/08/17 07:54:09 PM-0.67
0.22026/08/22 02:36:34 PM1.47
0.22026/08/26 02:15:19 PM1.17
0.22026/08/15 06:03:02 AM0.89
0.22026/08/06 04:33:53 AM4.16
0.22026/08/20 05:32:00 AM2.94
0.22026/08/07 07:13:24 AM1.98
0.22026/08/17 04:59:39 PM-1.02
0.22026/08/14 12:27:34 PM9.87
0.22026/08/25 09:38:59 PM5.47
0.12026/08/03 04:35:01 AM4.05
0.12026/08/17 02:03:51 AM3.52
0.12026/08/19 08:22:05 AM6.64
0.12026/08/08 04:13:50 PM12.09
0.12026/08/16 12:21:42 AM4.10
0.12026/08/22 10:59:24 PM2.03
0.12026/08/02 11:52:10 PM3.92
0.12026/08/13 06:10:55 PM10.76
0.12026/08/27 01:06:57 AM1.02
0.12026/08/27 07:17:58 AM3.89
0.12026/08/23 06:16:06 PM-0.57
0.12026/08/23 02:54:08 PM0.64
0.12026/08/22 06:15:36 PM4.24
0.12026/08/04 06:47:28 AM4.23
0.12026/08/11 02:59:07 AM0.58
0.02026/08/04 05:15:12 PM2.32
0.02026/08/02 04:02:53 AM5.87
0.02026/08/09 05:22:47 AM-1.11
0.02026/08/19 11:39:08 PM-1.12
0.02026/08/22 04:39:33 PM1.81
-0.02026/08/08 02:32:18 PM4.75
-0.02026/08/22 04:44:32 AM3.79
-0.02026/08/02 10:58:12 PM4.52
-0.12026/08/12 06:19:46 PM8.66
-0.12026/08/15 05:23:21 AM3.55
-0.12026/08/10 07:31:41 PM3.30
-0.12026/08/22 10:23:13 AM-1.30
-0.12026/08/11 02:47:51 AM0.82
-0.12026/08/22 03:43:13 AM6.64
-0.12026/08/22 10:19:57 AM-0.61
-0.12026/08/26 09:09:46 AM3.61
-0.22026/08/22 02:41:44 PM1.37
-0.22026/08/29 05:34:40 PM6.34
-0.22026/08/27 10:18:34 PM5.33
-0.32026/08/09 09:33:36 PM-0.66
-0.32026/08/14 05:38:23 PM4.02
-0.32026/08/27 07:47:01 PM5.19
-0.32026/08/15 10:16:27 PM5.03
-0.32026/08/09 07:19:09 AM1.79
-0.32026/08/22 08:04:03 AM3.49
-0.42026/08/22 04:34:41 PM1.67
-0.42026/08/30 01:11:50 PM5.47
-0.52026/08/01 09:05:57 PM2.58
-0.52026/08/29 11:52:31 PM0.88
-0.52026/08/31 02:14:59 PM2.72

Figure 1. Map of local earthquakes detected by the PNSN.

Figure 6. Plot of the number of events each day over the previous 5 years.

This report was generated automatically and will be updated periodically.

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