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Geomagnetic activity in April 2008
Mean Ap9.2No. 822 of 1138
G1+ days3
G3+ days0
Max Ap2723 Apr 2008
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 5 Apr 2008 | 5o | 18 | G1 |
| 6 Apr 2008 | 5- | 20 | G1 |
| 23 Apr 2008 | 5+ | 27 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| April 2007 | 9.1 | 6 | 0 |
| April 2008 | 9.2 | 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 9.2 in April 2008, No. 822 of 1138 months since 1932; 3 days reached G1 or higher.