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Geomagnetic activity in April 2002
Mean Ap16.9No. 250 of 1138
G1+ days6
G3+ days4
Max Ap7020 Apr 2002
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 17 Apr 2002 | 7+ | 62 | G3 |
| 18 Apr 2002 | 7o | 63 | G3 |
| 19 Apr 2002 | 7- | 62 | G3 |
| 20 Apr 2002 | 7+ | 70 | G3 |
| 23 Apr 2002 | 6o | 27 | G2 |
| 28 Apr 2002 | 5- | 20 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| April 2001 | 22.1 | 12 | 5 |
| April 2002 | 16.9 | 6 | 4 |
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 16.9 in April 2002, No. 250 of 1138 months since 1932; 6 days reached G1 or higher.