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Geomagnetic activity in April 2018
Mean Ap6.9No. 1014 of 1138
G1+ days1
G3+ days0
Max Ap4320 Apr 2018
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 20 Apr 2018 | 6o | 43 | G2 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| April 2017 | 11.7 | 6 | 0 |
| April 2018 | 6.9 | 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.
About this page
Mean Ap 6.9 in April 2018, No. 1014 of 1138 months since 1932; 1 days reached G1 or higher.