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Geomagnetic activity in August 1998
Mean Ap17.8No. 210 of 1138
G1+ days7
G3+ days2
Max Ap14427 Aug 1998
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 Aug 1998 | 6- | 21 | G2 |
| 6 Aug 1998 | 7+ | 64 | G3 |
| 7 Aug 1998 | 6o | 24 | G2 |
| 26 Aug 1998 | 6+ | 49 | G2 |
| 27 Aug 1998 | 8o | 144 | G4 |
| 28 Aug 1998 | 5o | 30 | G1 |
| 29 Aug 1998 | 5+ | 20 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| August 1997 | 6.9 | 2 | 0 |
| August 1998 | 17.8 | 7 | 2 |
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 17.8 in August 1998, No. 210 of 1138 months since 1932; 7 days reached G1 or higher.