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Geomagnetic activity in July 1948
Mean Ap9.9No. 755 of 1138
G1+ days1
G3+ days0
Max Ap2631 Jul 1948
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 4 Jul 1948 | 5+ | 22 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| July 1947 | 16.0 | 5 | 2 |
| July 1948 | 9.9 | 1 | 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 9.9 in July 1948, No. 755 of 1138 months since 1932; 1 days reached G1 or higher.