Eastern Interconnection Frequency Events

Generated by the PSFM-1 Frequency Recorder

(updated as events are recorded.)
All times are UTC.
Generated at 12:12:03 10-Feb-2025 UTC.

Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
02/01/25 03:36:10 03:36:12 -0.026 -0.0036 VT ROC
02/01/25 05:00:05 05:00:11 -0.033 -0.0051 VT ROC
02/01/25 05:00:04 05:00:14 -0.034 -0.0047 Delta -
02/01/25 06:00:06 06:00:08 -0.020 -0.0038 VT ROC
02/01/25 09:15:40 09:15:47 0.039 0.0065 VT ROC
02/01/25 09:15:38 09:15:49 0.040 0.0055 Delta +
02/01/25 09:24:04 09:24:11 -0.026 -0.0035 Delta -
02/01/25 11:44:38 11:44:41 0.022 0.0036 VT ROC
02/01/25 11:44:39 11:44:45 0.028 0.0037 Delta +


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
02/02/25 05:00:06 05:00:08 -0.024 -0.0043 VT ROC
02/02/25 05:00:05 05:00:09 -0.024 -0.0037 Delta -
02/02/25 16:13:05 16:13:08 -0.029 -0.0038 VT ROC
02/02/25 16:13:02 16:13:13 -0.031 -0.0036 Delta -


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
02/03/25 06:59:55 06:59:58 0.023 0.0040 VT ROC
02/03/25 06:59:56 07:00:01 0.026 0.0037 Delta +
02/03/25 09:30:12 09:30:17 0.024 0.0035 Delta +
02/03/25 10:00:07 10:00:08 -0.023 -0.0038 VT ROC
02/03/25 14:20:19 14:20:20 0.024 0.0036 VT ROC
02/03/25 20:40:44 20:40:46 0.031 0.0047 VT ROC
02/03/25 20:40:47 20:40:50 0.033 0.0045 VT ROC
02/03/25 20:40:43 20:40:56 0.035 0.0043 Delta +


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
02/04/25 09:51:44 09:51:48 0.029 0.0050 VT ROC
02/04/25 09:51:44 09:51:53 0.031 0.0045 Delta +
02/04/25 10:05:29 10:05:33 0.029 0.0043 VT ROC
02/04/25 10:05:28 10:05:36 0.029 0.0040 Delta +
02/04/25 10:59:14 10:59:16 0.024 0.0038 VT ROC
02/04/25 10:59:14 10:59:21 0.026 0.0038 Delta +
02/04/25 11:00:05 11:00:09 -0.027 -0.0046 VT ROC
02/04/25 11:00:05 11:00:14 -0.029 -0.0041 Delta -
02/04/25 21:00:06 21:00:08 0.026 0.0037 VT ROC
02/04/25 21:00:05 21:00:15 0.031 0.0035 Delta +


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
02/05/25 10:00:16 10:00:20 0.028 0.0048 VT ROC
02/05/25 10:00:25 10:00:27 0.033 0.0040 VT ROC
02/05/25 10:00:17 10:00:31 0.036 0.0042 Delta +
02/05/25 15:03:24 15:03:29 -0.029 -0.0068 VT ROC
02/05/25 15:03:23 15:03:31 -0.030 -0.0054 Delta -


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
02/06/25 08:00:03 08:00:05 -0.024 -0.0038 VT ROC
02/06/25 08:00:02 08:00:09 -0.026 -0.0035 Delta -
02/06/25 09:31:33 09:31:37 0.030 0.0048 VT ROC
02/06/25 09:31:31 09:31:41 0.031 0.0043 Delta +
02/06/25 18:55:46 18:55:51 -0.031 -0.0059 VT ROC
02/06/25 18:55:46 18:55:53 -0.032 -0.0049 Delta -
02/06/25 18:55:45 18:55:57 59.932   Under 59.940


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
02/07/25 05:00:06 05:00:08 -0.020 -0.0039 VT ROC
02/07/25 09:03:29 09:03:36 0.026 0.0036 Delta +
02/07/25 09:48:57 09:48:58 0.026 0.0040 VT ROC
02/07/25 09:48:56 09:49:04 0.028 0.0040 Delta +
02/07/25 09:59:18 09:59:19 0.029 0.0037 VT ROC
02/07/25 09:59:20 09:59:22 0.035 0.0042 VT ROC
02/07/25 09:59:23 09:59:28 0.039 0.0046 VT ROC
02/07/25 09:59:16 09:59:30 0.041 0.0046 Delta +
02/07/25 10:04:51 10:04:54 0.022 0.0040 VT ROC
02/07/25 13:00:06 13:00:08 -0.023 -0.0038 VT ROC
02/07/25 13:00:07 13:00:14 -0.025 -0.0037 Delta -
02/07/25 20:19:06 20:19:13 -0.039 -0.0063 VT ROC
02/07/25 20:19:05 20:19:17 -0.040 -0.0055 Delta -
02/07/25 20:46:42 20:46:44 0.029 0.0040 VT ROC
02/07/25 20:46:39 20:46:49 0.031 0.0036 Delta +


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
02/08/25 04:56:42 04:56:46 -0.029 -0.0036 VT ROC
02/08/25 04:56:40 04:56:50 -0.030 -0.0037 Delta -
02/08/25 10:55:55 10:55:57 0.022 0.0040 VT ROC
02/08/25 10:55:56 10:56:00 0.024 0.0036 Delta +
02/08/25 11:27:48 11:27:54 0.034 0.0050 VT ROC
02/08/25 11:27:48 11:27:58 0.035 0.0043 Delta +
02/08/25 12:25:57 12:26:04 0.034 0.0049 VT ROC
02/08/25 12:25:57 12:26:09 0.035 0.0046 Delta +
02/08/25 16:27:50 16:27:52 0.026 0.0036 VT ROC


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
02/09/25 04:48:30 04:48:33 -0.020 -0.0051 VT ROC
02/09/25 04:48:27 04:48:38 59.933   Under 59.940


Date Pickup Dropout Delta (Hz) Slope(Hz/sec) Type
02/10/25 01:00:06 01:00:10 -0.030 -0.0042 VT ROC
02/10/25 01:00:04 01:00:14 -0.031 -0.0040 Delta -
02/10/25 05:00:05 05:00:10 -0.030 -0.0053 VT ROC
02/10/25 05:00:04 05:00:13 -0.031 -0.0046 Delta -
02/10/25 06:00:06 06:00:08 -0.023 -0.0038 VT ROC
02/10/25 06:00:06 06:00:10 -0.024 -0.0036 Delta -
02/10/25 09:40:07 09:40:09 0.027 0.0042 VT ROC
02/10/25 09:40:06 09:40:13 0.028 0.0039 Delta +
02/10/25 12:11:48 12:11:54 -0.035 -0.0064 VT ROC
02/10/25 12:11:47 12:11:57 -0.036 -0.0053 Delta -


PSFM Hardware and software by Robert M. Orndorff
Generated at 12:12:03 10-Feb-2025 UTC.
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