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Geomagnetic activity in February 1964
Mean Ap12.0No. 585 of 1138
G1+ days7
G3+ days0
Max Ap3213 Feb 1964
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 5 Feb 1964 | 5- | 11 | G1 |
| 6 Feb 1964 | 5+ | 31 | G1 |
| 8 Feb 1964 | 6- | 20 | G2 |
| 13 Feb 1964 | 5o | 32 | G1 |
| 20 Feb 1964 | 5+ | 18 | G1 |
| 21 Feb 1964 | 5- | 15 | G1 |
| 25 Feb 1964 | 6- | 19 | G2 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| February 1963 | 8.6 | 5 | 0 |
| February 1964 | 12.0 | 7 | 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 12.0 in February 1964, No. 585 of 1138 months since 1932; 7 days reached G1 or higher.