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Geomagnetic storm on 8 Sep 2017 (G4)
Max Kp8+G4
Ap106No. 1 in 2017
Consecutive G1+ days2
Ap rank145since 1932
Kp by 3-hour slot (UTC)
8o
5-
4+
5o
8+
7+
6+
5-
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 5 Sep 2017 | 4o | 11 | – |
| 6 Sep 2017 | 3+ | 8 | – |
| 7 Sep 2017 | 8- | 36 | G4 |
| 8 Sep 2017 | 8+ | 106 | G4 |
| 9 Sep 2017 | 2+ | 3 | – |
| 10 Sep 2017 | 3o | 4 | – |
| 11 Sep 2017 | 3+ | 11 | – |
Highest-Ap days of 2017
106
51
47
47
46
44
44
37
37
36
Dates and time slots are UTC. Kp is the 3-hourly planetary geomagnetic index (0–9); Ap is the daily average disturbance. G1–G5 follow the NOAA storm scale (Kp 5- and above counted as G1). Aurora visibility also depends on weather and location. The latest values are preliminary.
About this page
Max Kp 8+, Ap 106: No. 145 of 34,615 days since 1932 by Ap.