Aurora & Space WeatherGeomagnetic activity in 2001
Mean Ap12.9
G1+63days
G3+17days
G52days
G1+ days by month
- January 2001
- February 2001
- March 2001
- April 2001
- May 2001
- June 2001
- July 2001
- August 2001
- September 2001
- October 2001
- November 2001
- December 2001
Nearby years (G1+ days)
41
43
54
77
83
63
74
158
60
77
40
Top 10 days by Ap
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 31 Mar 2001 | 9- | 192 | G5 |
| 6 Nov 2001 | 9- | 142 | G5 |
| 24 Nov 2001 | 8+ | 104 | G4 |
| 22 Oct 2001 | 7+ | 96 | G3 |
| 11 Apr 2001 | 8+ | 85 | G4 |
| 20 Mar 2001 | 7+ | 74 | G3 |
| 3 Oct 2001 | 7o | 69 | G3 |
| 8 Apr 2001 | 7o | 63 | G3 |
| 21 Oct 2001 | 8- | 57 | G4 |
| 2 Oct 2001 | 7- | 52 | 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
2001 had 63 G1+ storm days (No. 57 of 95 years) and 17 G3+ days.