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Geomagnetic activity in August 1986
Mean Ap12.4No. 551 of 1138
G1+ days10
G3+ days0
Max Ap2921 Aug 1986
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 3 Aug 1986 | 5- | 19 | G1 |
| 4 Aug 1986 | 5- | 20 | G1 |
| 20 Aug 1986 | 5- | 15 | G1 |
| 21 Aug 1986 | 5o | 29 | G1 |
| 22 Aug 1986 | 5+ | 29 | G1 |
| 23 Aug 1986 | 5- | 25 | G1 |
| 24 Aug 1986 | 5- | 22 | G1 |
| 25 Aug 1986 | 5o | 17 | G1 |
| 30 Aug 1986 | 5+ | 27 | G1 |
| 31 Aug 1986 | 5o | 16 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| August 1985 | 12.9 | 5 | 0 |
| August 1986 | 12.4 | 10 | 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 12.4 in August 1986, No. 551 of 1138 months since 1932; 10 days reached G1 or higher.