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Geomagnetic activity in October 2001
Mean Ap20.5No. 141 of 1138
G1+ days10
G3+ days5
Max Ap9622 Oct 2001
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 Oct 2001 | 6o | 48 | G2 |
| 2 Oct 2001 | 7- | 52 | G3 |
| 3 Oct 2001 | 7o | 69 | G3 |
| 8 Oct 2001 | 5- | 16 | G1 |
| 11 Oct 2001 | 5+ | 21 | G1 |
| 12 Oct 2001 | 6o | 34 | G2 |
| 21 Oct 2001 | 8- | 57 | G4 |
| 22 Oct 2001 | 7+ | 96 | G3 |
| 23 Oct 2001 | 5+ | 17 | G1 |
| 28 Oct 2001 | 7- | 44 | G3 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| October 2000 | 17.7 | 10 | 3 |
| October 2001 | 20.5 | 10 | 5 |
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.
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About this page
Mean Ap 20.5 in October 2001, No. 141 of 1138 months since 1932; 10 days reached G1 or higher.