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Geomagnetic activity in June 1998
Mean Ap9.8No. 775 of 1138
G1+ days3
G3+ days0
Max Ap4226 Jun 1998
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 10 Jun 1998 | 5- | 15 | G1 |
| 20 Jun 1998 | 5- | 14 | G1 |
| 26 Jun 1998 | 6+ | 42 | G2 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| June 1997 | 6.9 | 2 | 0 |
| June 1998 | 9.8 | 3 | 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 9.8 in June 1998, No. 775 of 1138 months since 1932; 3 days reached G1 or higher.