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Geomagnetic activity in January 1998
Mean Ap7.5No. 971 of 1138
G1+ days1
G3+ days0
Max Ap287 Jan 1998
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 7 Jan 1998 | 6+ | 28 | G2 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| January 1997 | 8.6 | 5 | 0 |
| January 1998 | 7.5 | 1 | 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.
← December 1997February 1998 →
About this page
Mean Ap 7.5 in January 1998, No. 971 of 1138 months since 1932; 1 days reached G1 or higher.