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Geomagnetic activity in July 1998
Mean Ap10.8No. 686 of 1138
G1+ days6
G3+ days0
Max Ap4023 Jul 1998
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 6 Jul 1998 | 5o | 19 | G1 |
| 16 Jul 1998 | 6o | 37 | G2 |
| 23 Jul 1998 | 5+ | 40 | G1 |
| 24 Jul 1998 | 5o | 28 | G1 |
| 30 Jul 1998 | 5o | 11 | G1 |
| 31 Jul 1998 | 5o | 29 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| July 1997 | 6.1 | 0 | 0 |
| July 1998 | 10.8 | 6 | 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 10.8 in July 1998, No. 686 of 1138 months since 1932; 6 days reached G1 or higher.