Aurora & Space WeatherHome › Geomagnetic history › 1945
Geomagnetic activity in January 1945
Mean Ap10.2No. 737 of 1138
G1+ days6
G3+ days1
Max Ap5029 Jan 1945
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 9 Jan 1945 | 5o | 11 | G1 |
| 10 Jan 1945 | 6- | 25 | G2 |
| 15 Jan 1945 | 6o | 36 | G2 |
| 28 Jan 1945 | 5- | 13 | G1 |
| 29 Jan 1945 | 7o | 50 | G3 |
| 30 Jan 1945 | 5- | 15 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| January 1944 | 12.7 | 10 | 0 |
| January 1945 | 10.2 | 6 | 1 |
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.
← December 1944February 1945 →
About this page
Mean Ap 10.2 in January 1945, No. 737 of 1138 months since 1932; 6 days reached G1 or higher.