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Geomagnetic activity in May 2013
Mean Ap9.7No. 788 of 1138
G1+ days4
G3+ days0
Max Ap3725 May 2013
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 May 2013 | 6- | 29 | G2 |
| 18 May 2013 | 5+ | 19 | G1 |
| 24 May 2013 | 6- | 20 | G2 |
| 25 May 2013 | 5o | 37 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| May 2012 | 7.1 | 2 | 0 |
| May 2013 | 9.7 | 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 9.7 in May 2013, No. 788 of 1138 months since 1932; 4 days reached G1 or higher.