Aurora & Space WeatherGeomagnetic activity in 2003
Mean Ap21.8
G1+158days
G3+17days
G53days
G1+ days by month
- January 2003
- February 2003
- March 2003
- April 2003
- May 2003
- June 2003
- July 2003
- August 2003
- September 2003
- October 2003
- November 2003
- December 2003
Nearby years (G1+ days)
54
77
83
63
74
158
60
77
40
29
16
Top 10 days by Ap
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 29 Oct 2003 | 9o | 204 | G5 |
| 30 Oct 2003 | 9o | 191 | G5 |
| 20 Nov 2003 | 9- | 150 | G5 |
| 31 Oct 2003 | 8+ | 116 | G4 |
| 29 May 2003 | 8+ | 109 | G4 |
| 18 Aug 2003 | 7+ | 108 | G3 |
| 17 Sep 2003 | 7o | 70 | G3 |
| 14 Oct 2003 | 7+ | 66 | G3 |
| 11 Nov 2003 | 6o | 61 | G2 |
| 18 Jun 2003 | 7- | 60 | G3 |
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
2003 had 158 G1+ storm days (No. 3 of 95 years) and 17 G3+ days.