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Geomagnetic activity in February 2011
Mean Ap6.4No. 1044 of 1138
G1+ days4
G3+ days0
Max Ap224 Feb 2011
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 4 Feb 2011 | 6- | 22 | G2 |
| 5 Feb 2011 | 5o | 16 | G1 |
| 14 Feb 2011 | 5+ | 13 | G1 |
| 18 Feb 2011 | 5o | 21 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| February 2010 | 4.5 | 0 | 0 |
| February 2011 | 6.4 | 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 6.4 in February 2011, No. 1044 of 1138 months since 1932; 4 days reached G1 or higher.