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Geomagnetic activity in August 1989
Mean Ap19.7No. 161 of 1138
G1+ days14
G3+ days4
Max Ap7715 Aug 1989
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 10 Aug 1989 | 6o | 41 | G2 |
| 11 Aug 1989 | 5+ | 25 | G1 |
| 14 Aug 1989 | 7- | 55 | G3 |
| 15 Aug 1989 | 7- | 77 | G3 |
| 16 Aug 1989 | 6- | 26 | G2 |
| 17 Aug 1989 | 6- | 34 | G2 |
| 18 Aug 1989 | 5o | 29 | G1 |
| 19 Aug 1989 | 5- | 14 | G1 |
| 20 Aug 1989 | 5o | 26 | G1 |
| 21 Aug 1989 | 5+ | 21 | G1 |
| 23 Aug 1989 | 5+ | 28 | G1 |
| 27 Aug 1989 | 6- | 26 | G2 |
| 28 Aug 1989 | 7- | 22 | G3 |
| 29 Aug 1989 | 7+ | 58 | G3 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| August 1988 | 10.5 | 2 | 0 |
| August 1989 | 19.7 | 14 | 4 |
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 19.7 in August 1989, No. 161 of 1138 months since 1932; 14 days reached G1 or higher.