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Geomagnetic activity in July 2001
Mean Ap9.0No. 840 of 1138
G1+ days3
G3+ days0
Max Ap2631 Jul 2001
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 8 Jul 2001 | 5- | 14 | G1 |
| 9 Jul 2001 | 5o | 10 | G1 |
| 31 Jul 2001 | 5o | 26 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| July 2000 | 21.4 | 12 | 4 |
| July 2001 | 9.0 | 3 | 0 |
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
Mean Ap 9.0 in July 2001, No. 840 of 1138 months since 1932; 3 days reached G1 or higher.