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Geomagnetic activity in July 1985
Mean Ap14.2No. 405 of 1138
G1+ days7
G3+ days1
Max Ap4812 Jul 1985
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 Jul 1985 | 5o | 14 | G1 |
| 4 Jul 1985 | 6o | 33 | G2 |
| 6 Jul 1985 | 5o | 21 | G1 |
| 12 Jul 1985 | 7- | 48 | G3 |
| 13 Jul 1985 | 5- | 20 | G1 |
| 17 Jul 1985 | 5o | 20 | G1 |
| 31 Jul 1985 | 5+ | 36 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| July 1984 | 16.0 | 9 | 1 |
| July 1985 | 14.2 | 7 | 1 |
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 14.2 in July 1985, No. 405 of 1138 months since 1932; 7 days reached G1 or higher.