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Geomagnetic activity in February 1937
Mean Ap12.8No. 523 of 1138
G1+ days2
G3+ days1
Max Ap563 Feb 1937
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 3 Feb 1937 | 7- | 56 | G3 |
| 19 Feb 1937 | 5+ | 28 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| February 1936 | 10.9 | 4 | 0 |
| February 1937 | 12.8 | 2 | 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.
About this page
Mean Ap 12.8 in February 1937, No. 523 of 1138 months since 1932; 2 days reached G1 or higher.