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Geomagnetic activity in February 1965
Mean Ap9.2No. 819 of 1138
G1+ days6
G3+ days0
Max Ap317 Feb 1965
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 6 Feb 1965 | 5- | 14 | G1 |
| 7 Feb 1965 | 6- | 31 | G2 |
| 8 Feb 1965 | 5+ | 17 | G1 |
| 21 Feb 1965 | 5- | 17 | G1 |
| 23 Feb 1965 | 5- | 18 | G1 |
| 25 Feb 1965 | 5o | 14 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| February 1964 | 12.0 | 7 | 0 |
| February 1965 | 9.2 | 6 | 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 9.2 in February 1965, No. 819 of 1138 months since 1932; 6 days reached G1 or higher.