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Geomagnetic activity in January 1948
Mean Ap11.6No. 615 of 1138
G1+ days3
G3+ days0
Max Ap413 Jan 1948
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 2 Jan 1948 | 5- | 18 | G1 |
| 3 Jan 1948 | 6o | 41 | G2 |
| 17 Jan 1948 | 6- | 24 | G2 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| January 1947 | 12.5 | 6 | 0 |
| January 1948 | 11.6 | 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.
← December 1947February 1948 →
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Mean Ap 11.6 in January 1948, No. 615 of 1138 months since 1932; 3 days reached G1 or higher.