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Geomagnetic activity in February 2021
Mean Ap9.5No. 801 of 1138
G1+ days1
G3+ days0
Max Ap2120 Feb 2021
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 7 Feb 2021 | 5- | 18 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| February 2020 | 6.2 | 0 | 0 |
| February 2021 | 9.5 | 1 | 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 9.5 in February 2021, No. 801 of 1138 months since 1932; 1 days reached G1 or higher.