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Geomagnetic activity in May 2015
Mean Ap8.2No. 914 of 1138
G1+ days4
G3+ days0
Max Ap4613 May 2015
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 6 May 2015 | 5+ | 22 | G1 |
| 13 May 2015 | 6- | 46 | G2 |
| 18 May 2015 | 5+ | 15 | G1 |
| 19 May 2015 | 5o | 13 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| May 2014 | 5.7 | 2 | 0 |
| May 2015 | 8.2 | 4 | 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 8.2 in May 2015, No. 914 of 1138 months since 1932; 4 days reached G1 or higher.