Eastern Interconnection Frequency Events

Generated by the PSFM-1 Frequency Recorder

(updated as events are recorded.)
All times are UTC.
Generated at 10:17:43 30-Dec-2024 UTC.

Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/01/24 08:59:39 08:59:43 0.028 0.0042 VT ROC
12/01/24 08:59:39 08:59:47 0.028 0.0040 Delta +
12/01/24 09:45:24 09:45:25 0.021 0.0036 VT ROC


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/02/24 09:00:05 09:00:08 -0.024 -0.0041 VT ROC
12/02/24 09:00:05 09:00:11 -0.024 -0.0036 Delta -
12/02/24 09:31:20 09:31:22 0.027 0.0043 VT ROC
12/02/24 09:31:18 09:31:26 0.029 0.0037 Delta +
12/02/24 10:05:11 10:05:11 0.021 0.0035 VT ROC
12/02/24 10:05:12 10:05:14 0.024 0.0040 VT ROC
12/02/24 10:05:12 10:05:19 0.026 0.0039 Delta +
12/02/24 12:52:59 12:53:01 -0.021 -0.0042 VT ROC
12/02/24 12:53:01 12:53:07 -0.026 -0.0036 Delta -
12/02/24 20:15:27 20:15:29 0.027 0.0036 VT ROC


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/03/24 05:10:54 05:10:56 -0.028 -0.0040 VT ROC
12/03/24 05:10:52 05:11:00 -0.029 -0.0039 Delta -
12/03/24 05:48:01 05:48:04 -0.031 -0.0051 VT ROC
12/03/24 05:48:01 05:48:12 -0.034 -0.0044 Delta -
12/03/24 19:57:09 19:57:12 -0.026 -0.0047 VT ROC
12/03/24 19:57:08 19:57:15 -0.026 -0.0037 Delta -
12/03/24 21:35:26 21:35:31 -0.032 -0.0049 VT ROC
12/03/24 21:35:25 21:35:34 -0.033 -0.0044 Delta -


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/04/24 05:00:04 05:00:08 -0.027 -0.0046 VT ROC
12/04/24 05:00:04 05:00:09 -0.028 -0.0040 Delta -
12/04/24 15:33:34 15:33:36 -0.025 -0.0060 VT ROC
12/04/24 15:33:35 15:33:43 -0.031 -0.0046 Delta -
12/04/24 21:06:16 21:06:25 0.029 0.0036 Delta +


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/05/24 06:13:44 06:13:45 0.026 0.0037 VT ROC
12/05/24 06:13:43 06:13:54 0.029 0.0037 Delta +
12/05/24 20:39:15 20:39:19 0.034 0.0047 VT ROC
12/05/24 20:39:20 20:39:21 0.033 0.0036 VT ROC
12/05/24 20:39:13 20:39:26 0.036 0.0040 Delta +


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/06/24 11:18:50 11:18:53 -0.024 -0.0041 VT ROC
12/06/24 17:00:07 17:00:08 -0.021 -0.0040 VT ROC


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/08/24 20:44:30 20:44:34 0.028 0.0044 VT ROC
12/08/24 20:44:29 20:44:37 0.029 0.0040 Delta +


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/09/24 01:11:51 01:11:53 0.031 0.0044 VT ROC
12/09/24 01:11:46 01:11:57 0.032 0.0038 Delta +
12/09/24 05:00:05 05:00:08 -0.023 -0.0044 VT ROC
12/09/24 05:00:07 05:00:10 -0.024 -0.0039 Delta -
12/09/24 06:00:06 06:00:09 -0.025 -0.0046 VT ROC
12/09/24 06:00:05 06:00:10 -0.026 -0.0039 Delta -
12/09/24 09:54:37 09:54:41 0.028 0.0041 VT ROC
12/09/24 09:54:38 09:54:47 0.030 0.0043 Delta +
12/09/24 11:00:06 11:00:09 -0.023 -0.0038 VT ROC
12/09/24 11:00:07 11:00:17 -0.030 -0.0038 Delta -
12/09/24 13:00:06 13:00:08 -0.026 -0.0036 VT ROC
12/09/24 14:00:03 14:00:10 -0.028 -0.0036 Delta -


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/10/24 00:12:06 00:12:10 -0.030 -0.0052 VT ROC
12/10/24 00:12:06 00:12:16 -0.031 -0.0045 Delta -
12/10/24 05:00:06 05:00:09 -0.025 -0.0051 VT ROC
12/10/24 05:00:06 05:00:12 -0.025 -0.0042 Delta -
12/10/24 05:06:05 05:06:09 -0.029 -0.0041 VT ROC
12/10/24 05:06:04 05:06:13 -0.030 -0.0039 Delta -
12/10/24 10:55:53 10:55:59 0.026 0.0035 Delta +
12/10/24 11:00:05 11:00:09 -0.028 -0.0045 VT ROC
12/10/24 11:00:04 11:00:12 -0.028 -0.0040 Delta -
12/10/24 16:56:12 16:56:16 -0.029 -0.0048 VT ROC
12/10/24 16:56:11 16:56:21 -0.030 -0.0045 Delta -


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/11/24 09:46:30 09:46:36 -0.027 -0.0035 Delta -
12/11/24 09:53:06 09:53:09 -0.029 -0.0048 VT ROC
12/11/24 09:53:04 09:53:13 -0.031 -0.0043 Delta -
12/11/24 13:19:33 13:19:42 -0.053 -0.0092 VT ROC
12/11/24 13:19:32 13:19:47 -0.055 -0.0081 Delta -
12/11/24 14:28:38 14:28:43 -0.035 -0.0053 VT ROC
12/11/24 14:28:36 14:28:48 -0.036 -0.0048 Delta -


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/12/24 06:00:06 06:00:10 -0.024 -0.0035 Delta -
12/12/24 09:59:56 10:00:00 0.031 0.0050 VT ROC
12/12/24 09:59:54 10:00:02 0.032 0.0044 Delta +


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/13/24 06:00:06 06:00:08 -0.028 -0.0043 VT ROC
12/13/24 06:00:03 06:00:12 -0.029 -0.0037 Delta -
12/13/24 11:17:55 11:17:56 -0.020 -0.0041 VT ROC


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/14/24 11:39:41 11:39:43 0.021 0.0038 VT ROC
12/14/24 16:52:39 16:52:43 -0.027 -0.0053 VT ROC
12/14/24 16:52:40 16:52:46 -0.028 -0.0047 Delta -
12/14/24 17:20:04 17:20:10 -0.036 -0.0064 VT ROC
12/14/24 17:20:03 17:20:14 -0.037 -0.0059 Delta -
12/14/24 20:31:16 20:31:21 0.034 0.0052 VT ROC
12/14/24 20:31:14 20:31:25 0.036 0.0047 Delta +


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/15/24 10:11:09 10:11:10 0.024 0.0036 VT ROC
12/15/24 10:11:08 10:11:16 0.028 0.0035 Delta +
12/15/24 10:31:13 10:31:16 0.028 0.0038 VT ROC
12/15/24 10:31:13 10:31:19 0.029 0.0035 Delta +
12/15/24 11:00:19 11:00:23 0.026 0.0046 VT ROC
12/15/24 11:00:20 11:00:27 0.027 0.0041 Delta +
12/15/24 12:05:26 12:05:30 0.028 0.0044 VT ROC
12/15/24 12:05:26 12:05:34 0.028 0.0043 Delta +


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/16/24 04:49:29 04:49:32 -0.030 -0.0041 VT ROC
12/16/24 04:49:35 04:49:37 -0.033 -0.0041 VT ROC
12/16/24 04:49:27 04:49:41 -0.036 -0.0041 Delta -
12/16/24 09:30:47 09:30:55 0.036 0.0053 VT ROC
12/16/24 09:30:47 09:31:00 0.037 0.0050 Delta +
12/16/24 11:00:07 11:00:11 -0.028 -0.0042 VT ROC
12/16/24 11:00:06 11:00:15 -0.030 -0.0040 Delta -


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/17/24 04:00:05 04:00:08 -0.025 -0.0040 VT ROC
12/17/24 04:00:05 04:00:10 -0.025 -0.0037 Delta -
12/17/24 05:00:06 05:00:09 -0.024 -0.0041 VT ROC
12/17/24 05:00:06 05:00:10 -0.024 -0.0037 Delta -
12/17/24 17:48:31 17:48:34 -0.025 -0.0037 VT ROC
12/17/24 17:48:32 17:48:38 -0.025 -0.0037 Delta -


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/18/24 09:55:16 09:55:22 0.034 0.0049 VT ROC
12/18/24 09:55:16 09:55:26 0.035 0.0048 Delta +


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/19/24 09:45:11 09:45:13 0.023 0.0038 VT ROC
12/19/24 09:45:11 09:45:19 0.028 0.0036 Delta +


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/20/24 10:00:40 10:00:45 0.033 0.0052 VT ROC
12/20/24 10:00:38 10:00:48 0.034 0.0048 Delta +


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/21/24 06:00:06 06:00:08 -0.022 -0.0040 VT ROC


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/22/24 10:41:02 10:41:07 0.032 0.0044 VT ROC
12/22/24 10:41:01 10:41:11 0.034 0.0042 Delta +
12/22/24 21:20:17 21:20:18 0.028 0.0037 VT ROC
12/22/24 21:20:16 21:20:25 0.030 0.0036 Delta +


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/23/24 05:00:06 05:00:07 -0.022 -0.0035 VT ROC
12/23/24 21:05:43 21:05:52 0.030 0.0038 Delta +


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/25/24 12:06:01 12:06:02 -0.024 -0.0041 VT ROC
12/25/24 12:06:01 12:06:08 -0.027 -0.0039 Delta -
12/25/24 19:01:00 19:01:02 0.021 0.0038 VT ROC
12/25/24 21:11:31 21:11:35 0.030 0.0043 VT ROC
12/25/24 21:11:29 21:11:39 0.032 0.0037 Delta +


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/26/24 06:00:05 06:00:08 -0.026 -0.0044 VT ROC
12/26/24 06:00:05 06:00:12 -0.027 -0.0039 Delta -
12/26/24 10:35:11 10:35:13 0.020 0.0038 VT ROC
12/26/24 10:54:29 10:54:33 -0.026 -0.0047 VT ROC
12/26/24 10:54:31 10:54:39 -0.028 -0.0046 Delta -
12/26/24 14:27:51 14:27:57 -0.041 -0.0062 VT ROC
12/26/24 14:27:50 14:28:01 -0.042 -0.0058 Delta -
12/26/24 20:30:49 20:30:57 -0.040 -0.0061 VT ROC
12/26/24 20:30:48 20:31:03 -0.042 -0.0058 Delta -
12/26/24 21:13:58 21:14:06 0.026 0.0035 Delta +


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/27/24 05:00:05 05:00:08 -0.024 -0.0045 VT ROC
12/27/24 09:15:40 09:15:47 0.028 0.0036 Delta +
12/27/24 09:20:56 09:20:59 0.025 0.0039 VT ROC
12/27/24 09:20:56 09:21:04 0.027 0.0038 Delta +
12/27/24 09:47:01 09:47:08 0.035 0.0051 VT ROC
12/27/24 09:47:00 09:47:12 0.037 0.0048 Delta +
12/27/24 20:30:30 20:30:34 0.033 0.0047 VT ROC
12/27/24 20:30:26 20:30:37 0.034 0.0042 Delta +
12/27/24 20:50:00 20:50:02 0.028 0.0042 VT ROC
12/27/24 20:50:02 20:50:04 0.028 0.0036 VT ROC
12/27/24 20:49:59 20:50:08 0.029 0.0042 Delta +


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/28/24 03:15:31 03:15:36 -0.033 -0.0044 VT ROC
12/28/24 03:15:28 03:15:41 -0.034 -0.0041 Delta -
12/28/24 05:00:06 05:00:09 -0.027 -0.0047 VT ROC
12/28/24 05:00:06 05:00:13 -0.027 -0.0041 Delta -
12/28/24 12:34:24 12:34:31 0.028 0.0035 Delta +
12/28/24 13:20:06 13:20:16 -0.028 -0.0036 Delta -
12/28/24 17:33:15 17:33:21 0.034 0.0072 VT ROC
12/28/24 17:33:16 17:33:24 0.035 0.0060 Delta +
12/28/24 22:25:50 22:25:52 -0.025 -0.0036 VT ROC


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/29/24 05:00:05 05:00:09 -0.028 -0.0048 VT ROC
12/29/24 05:00:04 05:00:12 -0.029 -0.0041 Delta -
12/29/24 06:35:01 06:35:06 -0.035 -0.0050 VT ROC
12/29/24 06:34:58 06:35:08 -0.037 -0.0046 Delta -
12/29/24 15:21:46 15:21:48 0.022 0.0038 VT ROC


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
12/30/24 05:00:05 05:00:08 -0.027 -0.0046 VT ROC
12/30/24 05:00:03 05:00:09 -0.028 -0.0040 Delta -
12/30/24 06:39:03 06:39:09 -0.026 -0.0037 Delta -
12/30/24 07:00:31 07:00:35 0.029 0.0046 VT ROC
12/30/24 07:00:29 07:00:39 0.030 0.0042 Delta +
12/30/24 10:17:39 10:17:40 0.028 0.0038 VT ROC


PSFM Hardware and software by Robert M. Orndorff
Generated at 10:17:43 30-Dec-2024 UTC.
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