Eastern Interconnection Frequency Events

Generated by the PSFM-1 Frequency Recorder

(updated as events are recorded.)
All times are UTC.
Generated at 17:43:12 15-Oct-2021 UTC.

Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
10/01/21 03:02:03 03:02:08 -0.024 -0.0028 Delta -
10/01/21 07:23:40 07:23:45 0.025 0.0036 Delta +
10/01/21 08:46:34 08:46:36 0.022 0.0042 VT ROC
10/01/21 10:25:13 10:25:16 0.024 0.0037 VT ROC
10/01/21 10:25:14 10:25:20 0.026 0.0034 Delta +
10/01/21 14:37:01 14:37:05 -0.023 -0.0025 Delta -


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
10/02/21 04:04:06 04:04:11 -0.030 -0.0045 VT ROC
10/02/21 04:04:06 04:04:15 -0.031 -0.0044 Delta -
10/02/21 05:59:42 05:59:48 0.028 0.0036 Delta +
10/02/21 12:01:23 12:01:25 0.024 0.0040 VT ROC
10/02/21 12:01:24 12:01:31 0.029 0.0042 Delta +
10/02/21 13:17:04 13:17:06 0.025 0.0042 VT ROC
10/02/21 13:17:04 13:17:11 0.027 0.0039 Delta +
10/02/21 13:30:12 13:30:14 0.022 0.0037 VT ROC
10/02/21 13:30:13 13:30:19 0.025 0.0035 Delta +
10/02/21 14:32:55 14:32:59 0.024 0.0029 Delta +
10/02/21 22:52:06 22:52:13 -0.025 -0.0033 Delta -


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
10/03/21 03:09:07 03:09:09 -0.026 -0.0038 VT ROC
10/03/21 03:09:06 03:09:13 -0.027 -0.0035 Delta -
10/03/21 08:24:54 08:25:01 0.027 0.0035 Delta +
10/03/21 12:09:42 12:09:48 0.025 0.0032 Delta +
10/03/21 13:06:58 13:07:04 0.025 0.0033 Delta +
10/03/21 14:16:20 14:16:24 0.024 0.0029 Delta +
10/03/21 15:10:51 15:10:52 -0.022 -0.0044 VT ROC
10/03/21 15:10:52 15:11:00 -0.028 -0.0039 Delta -
10/03/21 15:57:18 15:57:27 0.026 0.0030 Delta +


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
10/04/21 00:55:30 00:55:37 0.025 0.0030 Delta +
10/04/21 02:03:04 02:03:10 -0.027 -0.0033 Delta -
10/04/21 02:41:06 02:41:15 -0.030 -0.0033 Delta -
10/04/21 03:43:21 03:43:34 -0.026 -0.0029 Delta -
10/04/21 04:18:13 04:18:20 -0.025 -0.0029 Delta -
10/04/21 05:00:07 05:00:09 -0.021 -0.0037 VT ROC
10/04/21 09:21:02 09:21:03 0.020 0.0037 VT ROC
10/04/21 11:27:30 11:27:38 0.026 0.0029 Delta +
10/04/21 12:10:17 12:10:20 0.023 0.0039 VT ROC
10/04/21 12:10:18 12:10:22 0.024 0.0035 Delta +
10/04/21 12:59:14 12:59:21 0.027 0.0026 Delta +


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
10/05/21 03:12:26 03:12:33 -0.027 -0.0036 Delta -
10/05/21 10:08:30 10:08:34 0.024 0.0033 Delta +
10/05/21 10:33:01 10:33:09 -0.046 -0.0074 VT ROC
10/05/21 10:33:00 10:33:13 -0.047 -0.0068 Delta -
10/05/21 11:22:32 11:22:39 0.025 0.0027 Delta +
10/05/21 12:05:35 12:05:40 0.025 0.0034 Delta +


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
10/06/21 02:37:56 02:38:00 -0.029 -0.0057 VT ROC
10/06/21 02:37:56 02:38:03 -0.030 -0.0050 Delta -
10/06/21 03:12:27 03:12:36 -0.027 -0.0033 Delta -
10/06/21 03:52:52 03:52:56 -0.030 -0.0040 VT ROC
10/06/21 03:52:49 03:52:59 -0.032 -0.0037 Delta -
10/06/21 04:45:08 04:45:13 -0.024 -0.0034 Delta -
10/06/21 10:00:10 10:00:16 -0.025 -0.0031 Delta -
10/06/21 10:13:17 10:13:23 0.025 0.0032 Delta +
10/06/21 10:15:11 10:15:16 0.024 0.0027 Delta +


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
10/07/21 01:00:06 01:00:12 -0.026 -0.0031 Delta -
10/07/21 02:23:30 02:23:38 -0.027 -0.0031 Delta -
10/07/21 02:27:02 02:27:12 -0.026 -0.0028 Delta -
10/07/21 03:08:25 03:08:35 -0.029 -0.0035 Delta -
10/07/21 05:00:06 05:00:09 -0.022 -0.0035 VT ROC
10/07/21 09:45:39 09:45:44 0.031 0.0049 VT ROC
10/07/21 09:45:38 09:45:47 0.032 0.0044 Delta +
10/07/21 10:00:10 10:00:14 0.029 0.0050 VT ROC
10/07/21 10:00:09 10:00:15 0.029 0.0044 Delta +
10/07/21 10:10:17 10:10:25 0.046 0.0064 VT ROC
10/07/21 10:10:15 10:10:29 0.048 0.0060 Delta +
10/07/21 10:26:18 10:26:24 0.025 0.0030 Delta +
10/07/21 10:58:52 10:58:54 0.024 0.0040 VT ROC
10/07/21 10:58:52 10:58:57 0.025 0.0036 Delta +
10/07/21 12:47:07 12:47:11 0.023 0.0026 Delta +
10/07/21 22:40:03 22:40:08 -0.029 -0.0041 VT ROC
10/07/21 22:40:03 22:40:11 -0.029 -0.0041 Delta -


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
10/08/21 02:55:04 02:55:07 -0.023 -0.0027 Delta -
10/08/21 03:18:26 03:18:30 -0.024 -0.0028 Delta -
10/08/21 04:47:42 04:47:49 0.026 0.0029 Delta +
10/08/21 04:59:07 04:59:15 -0.024 -0.0030 Delta -
10/08/21 04:59:43 04:59:57 59.937   Under 59.940
10/08/21 05:00:02 05:00:14 59.937   Under 59.940
10/08/21 06:04:18 06:04:25 0.026 0.0033 Delta +
10/08/21 06:52:39 06:52:44 0.025 0.0032 Delta +
10/08/21 09:08:19 09:08:23 0.024 0.0031 Delta +
10/08/21 09:59:50 09:59:55 -0.024 -0.0029 Delta -
10/08/21 11:45:19 11:45:23 0.028 0.0049 VT ROC
10/08/21 11:45:20 11:45:29 0.030 0.0045 Delta +
10/08/21 23:51:05 23:51:10 -0.024 -0.0032 Delta -


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
10/09/21 03:51:59 03:52:07 -0.027 -0.0031 Delta -
10/09/21 04:19:58 04:20:06 -0.025 -0.0028 Delta -
10/09/21 04:32:45 04:32:49 0.024 0.0029 Delta +
10/09/21 04:54:46 04:54:51 0.025 0.0029 Delta +
10/09/21 04:57:05 04:57:11 -0.024 -0.0027 Delta -
10/09/21 09:00:26 09:00:33 0.027 0.0036 Delta +
10/09/21 10:26:43 10:26:51 0.028 0.0034 Delta +
10/09/21 11:00:08 11:00:11 -0.023 -0.0033 Delta -
10/09/21 12:00:58 12:01:00 0.027 0.0040 VT ROC
10/09/21 12:00:55 12:01:04 0.029 0.0039 Delta +
10/09/21 12:10:17 12:10:19 0.026 0.0041 VT ROC
10/09/21 12:10:15 12:10:22 0.027 0.0036 Delta +
10/09/21 12:33:24 12:33:36 0.027 0.0029 Delta +
10/09/21 12:35:21 12:35:28 0.043 0.0068 VT ROC
10/09/21 12:35:20 12:35:31 0.044 0.0065 Delta +
10/09/21 14:42:15 14:42:20 0.024 0.0027 Delta +
10/09/21 14:51:58 14:52:02 0.031 0.0043 VT ROC
10/09/21 14:51:55 14:52:05 0.032 0.0040 Delta +
10/09/21 15:15:54 15:16:01 0.023 0.0031 Delta +
10/09/21 17:05:35 17:05:44 0.027 0.0029 Delta +
10/09/21 19:04:23 19:04:28 -0.024 -0.0027 Delta -
10/09/21 20:08:18 20:08:27 0.027 0.0031 Delta +
10/09/21 21:52:08 21:52:15 -0.024 -0.0028 Delta -


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
10/10/21 01:49:23 01:49:33 -0.027 -0.0030 Delta -
10/10/21 02:27:01 02:27:12 0.028 0.0031 Delta +
10/10/21 03:25:25 03:25:30 0.024 0.0033 Delta +
10/10/21 05:14:24 05:14:28 -0.023 -0.0028 Delta -
10/10/21 05:28:31 05:28:36 0.024 0.0031 Delta +
10/10/21 06:49:03 06:49:07 -0.033 -0.0047 VT ROC
10/10/21 06:48:59 06:49:10 -0.035 -0.0041 Delta -
10/10/21 09:21:37 09:21:43 0.025 0.0032 Delta +
10/10/21 10:48:12 10:48:14 -0.027 -0.0038 VT ROC
10/10/21 10:48:11 10:48:21 -0.030 -0.0039 Delta -
10/10/21 11:00:11 11:00:16 0.032 0.0051 VT ROC
10/10/21 11:00:12 11:00:21 0.033 0.0044 Delta +
10/10/21 12:01:51 12:01:57 0.024 0.0028 Delta +
10/10/21 12:48:57 12:49:03 0.027 0.0031 Delta +
10/10/21 15:03:36 15:03:39 0.023 0.0025 Delta +
10/10/21 15:40:54 15:41:00 0.026 0.0032 Delta +
10/10/21 16:03:08 16:03:13 -0.024 -0.0027 Delta -
10/10/21 16:17:18 16:17:26 0.028 0.0035 Delta +
10/10/21 16:19:03 16:19:07 0.029 0.0039 VT ROC
10/10/21 16:19:01 16:19:10 0.032 0.0036 Delta +
10/10/21 22:13:57 22:14:01 0.024 0.0028 Delta +
10/10/21 22:17:53 22:17:54 -0.021 -0.0040 VT ROC
10/10/21 22:17:54 22:18:00 -0.025 -0.0037 Delta -


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
10/11/21 01:53:05 01:53:15 -0.029 -0.0033 Delta -
10/11/21 04:38:44 04:38:50 -0.027 -0.0033 Delta -
10/11/21 08:59:32 08:59:37 0.025 0.0030 Delta +
10/11/21 09:53:43 09:53:50 0.028 0.0037 Delta +
10/11/21 09:59:32 09:59:34 0.027 0.0046 VT ROC
10/11/21 09:59:31 09:59:39 0.030 0.0039 Delta +
10/11/21 11:14:26 11:14:29 0.025 0.0032 Delta +
10/11/21 17:21:37 17:21:45 -0.050 -0.0091 VT ROC
10/11/21 17:21:37 17:21:49 -0.051 -0.0084 Delta -


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
10/12/21 00:36:52 00:36:58 0.025 0.0025 Delta +
10/12/21 02:01:14 02:01:24 -0.027 -0.0029 Delta -
10/12/21 09:50:51 09:50:57 0.033 0.0047 VT ROC
10/12/21 09:50:50 09:51:01 0.034 0.0044 Delta +
10/12/21 10:00:17 10:00:24 0.043 0.0065 VT ROC
10/12/21 10:00:16 10:00:28 0.045 0.0060 Delta +
10/12/21 10:12:09 10:12:17 0.027 0.0037 Delta +
10/12/21 13:19:37 13:19:45 0.028 0.0035 Delta +
10/12/21 13:25:42 13:25:49 0.028 0.0035 Delta +
10/12/21 13:44:05 13:44:09 0.024 0.0030 Delta +


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
10/13/21 00:28:59 00:29:03 -0.023 -0.0027 Delta -
10/13/21 04:05:47 04:05:51 0.024 0.0028 Delta +
10/13/21 08:48:18 08:48:22 0.025 0.0031 Delta +
10/13/21 08:54:35 08:54:40 0.024 0.0029 Delta +
10/13/21 09:51:01 09:51:09 0.025 0.0033 Delta +
10/13/21 09:54:17 09:54:22 0.025 0.0034 Delta +
10/13/21 10:05:33 10:05:35 0.027 0.0037 VT ROC
10/13/21 10:05:30 10:05:40 0.029 0.0036 Delta +
10/13/21 10:07:00 10:07:08 -0.028 -0.0036 Delta -
10/13/21 10:25:18 10:25:25 -0.026 -0.0034 Delta -
10/13/21 10:25:59 10:26:06 0.024 0.0034 Delta +
10/13/21 10:50:37 10:50:39 0.023 0.0037 VT ROC
10/13/21 10:50:36 10:50:41 0.024 0.0033 Delta +
10/13/21 11:10:49 11:10:56 0.036 0.0050 VT ROC
10/13/21 11:10:49 11:11:01 0.038 0.0048 Delta +
10/13/21 12:10:45 12:10:53 -0.028 -0.0033 Delta -
10/13/21 13:08:10 13:08:17 -0.035 -0.0050 VT ROC
10/13/21 13:08:09 13:08:20 -0.036 -0.0051 Delta -


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
10/14/21 02:01:06 02:01:13 -0.026 -0.0034 Delta -
10/14/21 02:01:48 02:02:34 59.930   Under 59.940
10/14/21 02:03:14 02:05:36 59.928   Under 59.940
10/14/21 02:05:46 02:06:49 59.935   Under 59.940
10/14/21 04:22:48 04:22:57 -0.025 -0.0027 Delta -
10/14/21 05:00:22 05:00:26 0.028 0.0049 VT ROC
10/14/21 05:00:21 05:00:29 0.028 0.0043 Delta +
10/14/21 11:57:21 11:57:27 0.025 0.0031 Delta +
10/14/21 15:27:48 15:27:51 0.025 0.0043 VT ROC
10/14/21 15:27:48 15:27:54 0.026 0.0036 Delta +
10/14/21 22:39:31 22:39:35 -0.023 -0.0025 Delta -


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
10/15/21 01:09:53 01:10:01 -0.027 -0.0029 Delta -
10/15/21 07:06:08 07:06:10 -0.023 -0.0036 VT ROC
10/15/21 09:00:10 09:00:14 -0.023 -0.0027 Delta -
10/15/21 09:00:40 09:00:50 0.030 0.0034 Delta +
10/15/21 10:15:28 10:15:34 0.025 0.0029 Delta +
10/15/21 10:54:16 10:54:20 0.030 0.0047 VT ROC
10/15/21 10:54:15 10:54:25 0.032 0.0042 Delta +
10/15/21 11:45:17 11:45:24 -0.025 -0.0029 Delta -
10/15/21 14:07:57 14:08:00 0.024 0.0028 Delta +
10/15/21 14:35:32 14:35:37 0.024 0.0033 Delta +
10/15/21 16:04:13 16:04:18 0.025 0.0036 Delta +
10/15/21 16:06:45 16:06:51 0.025 0.0029 Delta +
10/15/21 17:43:01 17:43:06 -0.034 -0.0043 VT ROC
10/15/21 17:42:59 17:43:09 -0.035 -0.0041 Delta -


PSFM Hardware and software by Robert M. Orndorff
Generated at 17:43:12 15-Oct-2021 UTC.
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