Eastern Interconnection Frequency Events
(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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