Aurora & Space WeatherGeomagnetic activity in 2015
Mean Ap12.2
G1+69days
G3+8days
G50days
G1+ days by month
- January 2015
- February 2015
- March 2015
- April 2015
- May 2015
- June 2015
- July 2015
- August 2015
- September 2015
- October 2015
- November 2015
- December 2015
Nearby years (G1+ days)
15
34
52
30
23
69
63
53
20
18
9
Top 10 days by Ap
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 17 Mar 2015 | 8- | 108 | G4 |
| 7 Oct 2015 | 7+ | 74 | G3 |
| 23 Jun 2015 | 8- | 72 | G4 |
| 20 Dec 2015 | 7- | 70 | G3 |
| 11 Sep 2015 | 7o | 60 | G3 |
| 9 Sep 2015 | 6o | 59 | G2 |
| 22 Jun 2015 | 8+ | 57 | G4 |
| 27 Aug 2015 | 6+ | 52 | G2 |
| 18 Mar 2015 | 6o | 47 | G2 |
| 13 May 2015 | 6- | 46 | G2 |
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
2015 had 69 G1+ storm days (No. 50 of 95 years) and 8 G3+ days.