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Geomagnetic activity in September 2020
Mean Ap8.6No. 886 of 1138
G1+ days4
G3+ days0
Max Ap3228 Sep 2020
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 24 Sep 2020 | 6- | 20 | G2 |
| 26 Sep 2020 | 5- | 24 | G1 |
| 27 Sep 2020 | 5+ | 20 | G1 |
| 28 Sep 2020 | 5o | 32 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| September 2019 | 9.8 | 4 | 0 |
| September 2020 | 8.6 | 4 | 0 |
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
Mean Ap 8.6 in September 2020, No. 886 of 1138 months since 1932; 4 days reached G1 or higher.