Aurora & Space WeatherGeomagnetic activity in 2005
Mean Ap13.5
G1+77days
G3+17days
G51days
G1+ days by month
- January 2005
- February 2005
- March 2005
- April 2005
- May 2005
- June 2005
- July 2005
- August 2005
- September 2005
- October 2005
- November 2005
- December 2005
Nearby years (G1+ days)
83
63
74
158
60
77
40
29
16
4
15
Top 10 days by Ap
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 24 Aug 2005 | 9- | 102 | G5 |
| 11 Sep 2005 | 8- | 101 | G4 |
| 8 May 2005 | 8+ | 91 | G4 |
| 30 May 2005 | 8- | 90 | G4 |
| 15 May 2005 | 8+ | 87 | G4 |
| 18 Jan 2005 | 8- | 84 | G4 |
| 12 Sep 2005 | 7o | 75 | G3 |
| 21 Jan 2005 | 8o | 66 | G4 |
| 19 Jan 2005 | 7- | 60 | G3 |
| 17 Jan 2005 | 6+ | 58 | 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
2005 had 77 G1+ storm days (No. 43 of 95 years) and 17 G3+ days.