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Geomagnetic activity in May 1951
Mean Ap20.5No. 138 of 1138
G1+ days14
G3+ days5
Max Ap682 May 1951
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 May 1951 | 7+ | 63 | G3 |
| 2 May 1951 | 7+ | 68 | G3 |
| 3 May 1951 | 5+ | 32 | G1 |
| 4 May 1951 | 5+ | 28 | G1 |
| 9 May 1951 | 7+ | 35 | G3 |
| 10 May 1951 | 7- | 47 | G3 |
| 11 May 1951 | 5- | 22 | G1 |
| 15 May 1951 | 5- | 18 | G1 |
| 17 May 1951 | 5- | 29 | G1 |
| 18 May 1951 | 5- | 16 | G1 |
| 23 May 1951 | 6o | 27 | G2 |
| 26 May 1951 | 7o | 42 | G3 |
| 27 May 1951 | 5+ | 20 | G1 |
| 30 May 1951 | 5o | 16 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| May 1950 | 16.2 | 10 | 2 |
| May 1951 | 20.5 | 14 | 5 |
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 20.5 in May 1951, No. 138 of 1138 months since 1932; 14 days reached G1 or higher.