Aurora & Space WeatherHome › Geomagnetic history › 1941
Geomagnetic activity in July 1941
Mean Ap19.3No. 171 of 1138
G1+ days6
G3+ days2
Max Ap2225 Jul 1941
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 4 Jul 1941 | 5+ | 26 | G1 |
| 5 Jul 1941 | 9o | 222 | G5 |
| 6 Jul 1941 | 6+ | 42 | G2 |
| 7 Jul 1941 | 7o | 54 | G3 |
| 10 Jul 1941 | 5o | 21 | G1 |
| 21 Jul 1941 | 6o | 38 | G2 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| July 1940 | 11.7 | 7 | 1 |
| July 1941 | 19.3 | 6 | 2 |
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 19.3 in July 1941, No. 171 of 1138 months since 1932; 6 days reached G1 or higher.