Eastern Interconnection Frequency Events
(updated as events are recorded.)
All times are UTC.
Generated at 13:19:56 28-Sep-2023 UTC.
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/01/23 |
10:27:32 |
10:27:33 |
0.024 |
0.0036 |
VT ROC |
09/01/23 |
10:27:31 |
10:27:39 |
0.030 |
0.0039 |
Delta + |
09/01/23 |
10:59:30 |
10:59:36 |
0.025 |
0.0035 |
Delta + |
09/01/23 |
15:35:51 |
15:35:55 |
0.027 |
0.0045 |
VT ROC |
09/01/23 |
15:35:51 |
15:35:59 |
0.028 |
0.0043 |
Delta + |
09/01/23 |
23:04:22 |
23:04:25 |
0.029 |
0.0037 |
VT ROC |
09/01/23 |
23:04:19 |
23:04:29 |
0.030 |
0.0037 |
Delta + |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/02/23 |
09:35:38 |
09:35:41 |
0.026 |
0.0038 |
VT ROC |
09/02/23 |
09:35:37 |
09:35:42 |
0.026 |
0.0040 |
Delta + |
09/02/23 |
10:32:20 |
10:32:27 |
-0.035 |
-0.0048 |
VT ROC |
09/02/23 |
10:32:19 |
10:32:31 |
-0.036 |
-0.0047 |
Delta - |
09/02/23 |
11:20:15 |
11:20:17 |
0.021 |
0.0040 |
VT ROC |
09/02/23 |
11:20:17 |
11:20:22 |
0.026 |
0.0038 |
Delta + |
09/02/23 |
11:53:02 |
11:53:04 |
0.026 |
0.0040 |
VT ROC |
09/02/23 |
11:53:00 |
11:53:09 |
0.027 |
0.0039 |
Delta + |
09/02/23 |
13:00:17 |
13:00:21 |
0.028 |
0.0042 |
VT ROC |
09/02/23 |
13:00:16 |
13:00:24 |
0.029 |
0.0040 |
Delta + |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/03/23 |
06:00:06 |
06:00:09 |
-0.021 |
-0.0038 |
VT ROC |
09/03/23 |
12:30:24 |
12:30:33 |
0.026 |
0.0035 |
Delta + |
09/03/23 |
15:45:20 |
15:45:24 |
0.031 |
0.0039 |
VT ROC |
09/03/23 |
15:45:17 |
15:45:29 |
0.032 |
0.0037 |
Delta + |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/04/23 |
04:00:06 |
04:00:09 |
-0.024 |
-0.0043 |
VT ROC |
09/04/23 |
04:00:07 |
04:00:13 |
-0.025 |
-0.0038 |
Delta - |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/05/23 |
17:55:06 |
17:55:08 |
-0.023 |
-0.0038 |
VT ROC |
09/05/23 |
17:55:07 |
17:55:14 |
-0.027 |
-0.0039 |
Delta - |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/06/23 |
11:00:31 |
11:00:34 |
0.026 |
0.0043 |
VT ROC |
09/06/23 |
11:00:31 |
11:00:39 |
0.027 |
0.0036 |
Delta + |
09/06/23 |
11:55:18 |
11:55:20 |
0.024 |
0.0037 |
VT ROC |
09/06/23 |
16:30:36 |
16:30:40 |
-0.033 |
-0.0062 |
VT ROC |
09/06/23 |
16:30:41 |
16:30:42 |
-0.031 |
-0.0043 |
VT ROC |
09/06/23 |
16:30:36 |
16:30:45 |
-0.034 |
-0.0053 |
Delta - |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/07/23 |
09:32:26 |
09:32:27 |
0.028 |
0.0039 |
VT ROC |
09/07/23 |
09:32:23 |
09:32:31 |
0.029 |
0.0038 |
Delta + |
09/07/23 |
14:27:03 |
14:27:09 |
-0.037 |
-0.0070 |
VT ROC |
09/07/23 |
14:27:03 |
14:27:13 |
-0.038 |
-0.0058 |
Delta - |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/08/23 |
04:00:05 |
04:00:09 |
-0.023 |
-0.0039 |
VT ROC |
09/08/23 |
15:56:02 |
15:56:03 |
-0.021 |
-0.0036 |
VT ROC |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/09/23 |
00:00:08 |
00:00:09 |
-0.021 |
-0.0035 |
VT ROC |
09/09/23 |
10:57:25 |
10:57:32 |
0.026 |
0.0036 |
Delta + |
09/09/23 |
13:44:54 |
13:44:56 |
0.023 |
0.0042 |
VT ROC |
09/09/23 |
13:44:54 |
13:44:57 |
0.024 |
0.0037 |
Delta + |
09/09/23 |
14:15:19 |
14:15:23 |
0.029 |
0.0044 |
VT ROC |
09/09/23 |
14:15:19 |
14:15:28 |
0.031 |
0.0039 |
Delta + |
09/09/23 |
22:18:57 |
22:19:00 |
-0.026 |
-0.0044 |
VT ROC |
09/09/23 |
22:18:58 |
22:19:07 |
-0.028 |
-0.0043 |
Delta - |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/10/23 |
08:00:06 |
08:00:09 |
-0.024 |
-0.0039 |
VT ROC |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/11/23 |
09:59:15 |
09:59:17 |
0.025 |
0.0038 |
VT ROC |
09/11/23 |
09:59:14 |
09:59:20 |
0.026 |
0.0038 |
Delta + |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/12/23 |
03:53:57 |
03:53:59 |
-0.027 |
-0.0049 |
VT ROC |
09/12/23 |
03:54:00 |
03:54:03 |
-0.033 |
-0.0047 |
VT ROC |
09/12/23 |
03:53:57 |
03:54:09 |
-0.036 |
-0.0042 |
Delta - |
09/12/23 |
04:00:06 |
04:00:09 |
-0.026 |
-0.0047 |
VT ROC |
09/12/23 |
04:00:06 |
04:00:12 |
-0.027 |
-0.0042 |
Delta - |
09/12/23 |
10:10:28 |
10:10:30 |
0.022 |
0.0037 |
VT ROC |
09/12/23 |
10:10:29 |
10:10:36 |
0.025 |
0.0037 |
Delta + |
09/12/23 |
10:55:26 |
10:55:33 |
0.027 |
0.0035 |
Delta + |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/13/23 |
10:00:07 |
10:00:09 |
-0.025 |
-0.0041 |
VT ROC |
09/13/23 |
10:00:07 |
10:00:15 |
-0.027 |
-0.0038 |
Delta - |
09/13/23 |
11:01:19 |
11:01:21 |
0.024 |
0.0041 |
VT ROC |
09/13/23 |
11:01:19 |
11:01:27 |
0.027 |
0.0038 |
Delta + |
09/13/23 |
11:05:18 |
11:05:20 |
0.025 |
0.0040 |
VT ROC |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/14/23 |
09:50:21 |
09:50:29 |
0.029 |
0.0036 |
Delta + |
09/14/23 |
10:00:05 |
10:00:09 |
-0.028 |
-0.0042 |
VT ROC |
09/14/23 |
10:00:02 |
10:00:13 |
-0.029 |
-0.0037 |
Delta - |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/15/23 |
06:00:07 |
06:00:09 |
-0.027 |
-0.0037 |
VT ROC |
09/15/23 |
06:00:05 |
06:00:12 |
-0.028 |
-0.0035 |
Delta - |
09/15/23 |
10:15:18 |
10:15:23 |
0.030 |
0.0045 |
VT ROC |
09/15/23 |
10:15:19 |
10:15:27 |
0.031 |
0.0041 |
Delta + |
09/15/23 |
10:55:24 |
10:55:29 |
0.029 |
0.0040 |
VT ROC |
09/15/23 |
10:55:24 |
10:55:33 |
0.030 |
0.0038 |
Delta + |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/16/23 |
04:00:04 |
04:00:09 |
-0.035 |
-0.0053 |
VT ROC |
09/16/23 |
04:00:03 |
04:00:14 |
-0.036 |
-0.0047 |
Delta - |
09/16/23 |
06:05:21 |
06:05:23 |
0.025 |
0.0036 |
VT ROC |
09/16/23 |
13:12:27 |
13:12:36 |
0.030 |
0.0035 |
Delta + |
09/16/23 |
14:16:09 |
14:16:11 |
0.021 |
0.0039 |
VT ROC |
09/16/23 |
14:16:11 |
14:16:18 |
0.026 |
0.0037 |
Delta + |
09/16/23 |
15:05:30 |
15:05:34 |
0.025 |
0.0041 |
VT ROC |
09/16/23 |
15:05:31 |
15:05:37 |
0.026 |
0.0039 |
Delta + |
09/16/23 |
15:07:08 |
15:07:10 |
0.025 |
0.0036 |
VT ROC |
09/16/23 |
15:07:11 |
15:07:13 |
0.030 |
0.0041 |
VT ROC |
09/16/23 |
15:07:08 |
15:07:18 |
0.031 |
0.0043 |
Delta + |
09/16/23 |
18:20:45 |
18:20:47 |
0.025 |
0.0036 |
VT ROC |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/17/23 |
12:40:17 |
12:40:21 |
0.031 |
0.0046 |
VT ROC |
09/17/23 |
12:40:15 |
12:40:25 |
0.032 |
0.0040 |
Delta + |
09/17/23 |
13:00:47 |
13:00:48 |
0.024 |
0.0036 |
VT ROC |
09/17/23 |
13:00:47 |
13:00:55 |
0.026 |
0.0037 |
Delta + |
09/17/23 |
13:43:13 |
13:43:20 |
0.026 |
0.0035 |
Delta + |
09/17/23 |
14:00:53 |
14:00:54 |
0.025 |
0.0040 |
VT ROC |
09/17/23 |
14:00:51 |
14:00:59 |
0.026 |
0.0038 |
Delta + |
09/17/23 |
14:01:11 |
14:01:13 |
0.020 |
0.0040 |
VT ROC |
09/17/23 |
14:15:20 |
14:15:22 |
0.028 |
0.0042 |
VT ROC |
09/17/23 |
14:15:18 |
14:15:28 |
0.030 |
0.0039 |
Delta + |
09/17/23 |
23:13:22 |
23:13:31 |
-0.060 |
-0.0099 |
VT ROC |
09/17/23 |
23:13:19 |
23:13:34 |
-0.062 |
-0.0086 |
Delta - |
09/17/23 |
23:13:25 |
23:13:55 |
59.933 |
  |
Under 59.940 |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/18/23 |
04:51:11 |
04:51:13 |
-0.028 |
-0.0037 |
VT ROC |
09/18/23 |
07:57:31 |
07:57:34 |
0.024 |
0.0042 |
VT ROC |
09/18/23 |
07:57:31 |
07:57:36 |
0.025 |
0.0039 |
Delta + |
09/18/23 |
11:26:20 |
11:26:23 |
0.027 |
0.0036 |
VT ROC |
09/18/23 |
11:26:19 |
11:26:31 |
0.032 |
0.0036 |
Delta + |
09/18/23 |
15:17:09 |
15:17:11 |
0.023 |
0.0042 |
VT ROC |
09/18/23 |
15:17:09 |
15:17:22 |
0.029 |
0.0037 |
Delta + |
09/18/23 |
22:00:05 |
22:00:07 |
-0.024 |
-0.0035 |
VT ROC |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/19/23 |
00:00:06 |
00:00:09 |
-0.025 |
-0.0042 |
VT ROC |
09/19/23 |
00:00:05 |
00:00:12 |
-0.026 |
-0.0036 |
Delta - |
09/19/23 |
09:00:06 |
09:00:10 |
-0.027 |
-0.0041 |
VT ROC |
09/19/23 |
09:00:06 |
09:00:14 |
-0.027 |
-0.0039 |
Delta - |
09/19/23 |
09:58:58 |
09:59:03 |
0.032 |
0.0052 |
VT ROC |
09/19/23 |
09:58:55 |
09:59:05 |
0.033 |
0.0044 |
Delta + |
09/19/23 |
11:00:17 |
11:00:22 |
0.036 |
0.0065 |
VT ROC |
09/19/23 |
11:00:17 |
11:00:26 |
0.036 |
0.0060 |
Delta + |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/20/23 |
00:00:05 |
00:00:09 |
-0.027 |
-0.0039 |
VT ROC |
09/20/23 |
00:00:03 |
00:00:10 |
-0.028 |
-0.0036 |
Delta - |
09/20/23 |
05:00:07 |
05:00:11 |
-0.027 |
-0.0040 |
VT ROC |
09/20/23 |
05:00:07 |
05:00:23 |
-0.029 |
-0.0040 |
Delta - |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/21/23 |
05:00:05 |
05:00:09 |
-0.024 |
-0.0039 |
VT ROC |
09/21/23 |
10:11:53 |
10:11:54 |
0.023 |
0.0037 |
VT ROC |
09/21/23 |
10:33:55 |
10:33:57 |
0.021 |
0.0039 |
VT ROC |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/22/23 |
08:59:26 |
08:59:35 |
0.029 |
0.0037 |
Delta + |
09/22/23 |
12:55:23 |
12:55:27 |
0.030 |
0.0047 |
VT ROC |
09/22/23 |
12:55:21 |
12:55:33 |
0.031 |
0.0042 |
Delta + |
09/22/23 |
22:19:07 |
22:19:13 |
-0.036 |
-0.0074 |
VT ROC |
09/22/23 |
22:19:07 |
22:19:17 |
-0.038 |
-0.0059 |
Delta - |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/23/23 |
05:04:44 |
05:06:21 |
59.930 |
  |
Under 59.940 |
09/23/23 |
09:00:21 |
09:00:22 |
0.024 |
0.0036 |
VT ROC |
09/23/23 |
10:31:23 |
10:31:24 |
0.020 |
0.0038 |
VT ROC |
09/23/23 |
23:00:07 |
23:00:09 |
-0.024 |
-0.0036 |
VT ROC |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/24/23 |
00:00:05 |
00:00:10 |
-0.035 |
-0.0053 |
VT ROC |
09/24/23 |
00:00:02 |
00:00:15 |
-0.036 |
-0.0049 |
Delta - |
09/24/23 |
02:15:35 |
02:15:40 |
-0.031 |
-0.0055 |
VT ROC |
09/24/23 |
02:15:36 |
02:15:51 |
-0.035 |
-0.0046 |
Delta - |
09/24/23 |
04:00:05 |
04:00:09 |
-0.027 |
-0.0047 |
VT ROC |
09/24/23 |
04:00:04 |
04:00:12 |
-0.028 |
-0.0042 |
Delta - |
09/24/23 |
05:00:06 |
05:00:09 |
-0.023 |
-0.0042 |
VT ROC |
09/24/23 |
05:00:08 |
05:00:14 |
-0.026 |
-0.0037 |
Delta - |
09/24/23 |
09:57:19 |
09:57:20 |
0.021 |
0.0039 |
VT ROC |
09/24/23 |
10:00:06 |
10:00:13 |
-0.026 |
-0.0037 |
Delta - |
09/24/23 |
14:00:07 |
14:00:09 |
-0.026 |
-0.0036 |
VT ROC |
09/24/23 |
14:45:00 |
14:45:06 |
0.035 |
0.0050 |
VT ROC |
09/24/23 |
14:44:58 |
14:45:10 |
0.036 |
0.0048 |
Delta + |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/25/23 |
00:00:05 |
00:00:09 |
-0.028 |
-0.0047 |
VT ROC |
09/25/23 |
00:00:04 |
00:00:16 |
-0.030 |
-0.0039 |
Delta - |
09/25/23 |
03:57:28 |
03:57:30 |
-0.027 |
-0.0036 |
VT ROC |
09/25/23 |
04:00:06 |
04:00:09 |
-0.027 |
-0.0043 |
VT ROC |
09/25/23 |
04:00:05 |
04:00:12 |
-0.028 |
-0.0041 |
Delta - |
09/25/23 |
06:00:07 |
06:00:09 |
-0.028 |
-0.0040 |
VT ROC |
09/25/23 |
06:00:05 |
06:00:13 |
-0.029 |
-0.0039 |
Delta - |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/26/23 |
10:00:05 |
10:00:10 |
-0.033 |
-0.0049 |
VT ROC |
09/26/23 |
10:00:04 |
10:00:15 |
-0.034 |
-0.0043 |
Delta - |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/27/23 |
00:00:06 |
00:00:08 |
-0.021 |
-0.0037 |
VT ROC |
09/27/23 |
05:00:07 |
05:00:13 |
-0.026 |
-0.0036 |
Delta - |
09/27/23 |
09:00:05 |
09:00:09 |
-0.033 |
-0.0053 |
VT ROC |
09/27/23 |
09:00:02 |
09:00:13 |
-0.034 |
-0.0046 |
Delta - |
09/27/23 |
14:26:12 |
14:26:16 |
0.029 |
0.0043 |
VT ROC |
09/27/23 |
14:26:12 |
14:26:20 |
0.030 |
0.0038 |
Delta + |
Date |
Pickup |
Dropout |
Delta (Hz) |
Slope(Hz/sec) |
Type |
09/28/23 |
04:00:05 |
04:00:09 |
-0.028 |
-0.0045 |
VT ROC |
09/28/23 |
04:00:03 |
04:00:10 |
-0.029 |
-0.0039 |
Delta - |
09/28/23 |
04:41:00 |
04:41:04 |
-0.030 |
-0.0040 |
VT ROC |
09/28/23 |
04:40:59 |
04:41:08 |
-0.031 |
-0.0037 |
Delta - |
09/28/23 |
09:12:02 |
09:12:04 |
0.023 |
0.0038 |
VT ROC |
09/28/23 |
10:11:57 |
10:11:58 |
0.025 |
0.0038 |
VT ROC |
09/28/23 |
10:11:55 |
10:12:03 |
0.028 |
0.0036 |
Delta + |
09/28/23 |
13:19:38 |
13:19:41 |
-0.025 |
-0.0043 |
VT ROC |
09/28/23 |
13:19:38 |
13:19:45 |
-0.027 |
-0.0036 |
Delta - |
PSFM Hardware and software by Robert M. Orndorff
Generated at 13:19:56 28-Sep-2023 UTC.
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