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Geomagnetic activity in February 1961
Mean Ap15.6No. 317 of 1138
G1+ days11
G3+ days2
Max Ap5118 Feb 1961
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 3 Feb 1961 | 5- | 13 | G1 |
| 4 Feb 1961 | 7o | 43 | G3 |
| 5 Feb 1961 | 6- | 29 | G2 |
| 6 Feb 1961 | 5o | 23 | G1 |
| 13 Feb 1961 | 5o | 23 | G1 |
| 16 Feb 1961 | 5+ | 27 | G1 |
| 17 Feb 1961 | 6o | 29 | G2 |
| 18 Feb 1961 | 7- | 51 | G3 |
| 19 Feb 1961 | 5- | 18 | G1 |
| 20 Feb 1961 | 5+ | 30 | G1 |
| 21 Feb 1961 | 5- | 23 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| February 1960 | 14.0 | 11 | 0 |
| February 1961 | 15.6 | 11 | 2 |
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 15.6 in February 1961, No. 317 of 1138 months since 1932; 11 days reached G1 or higher.