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Geomagnetic activity in March 1947
Mean Ap32.2No. 19 of 1138
G1+ days19
G3+ days7
Max Ap1283 Mar 1947
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 2 Mar 1947 | 7o | 81 | G3 |
| 3 Mar 1947 | 8+ | 128 | G4 |
| 4 Mar 1947 | 7+ | 82 | G3 |
| 7 Mar 1947 | 5- | 19 | G1 |
| 8 Mar 1947 | 8- | 90 | G4 |
| 9 Mar 1947 | 7- | 46 | G3 |
| 12 Mar 1947 | 5- | 18 | G1 |
| 14 Mar 1947 | 5+ | 25 | G1 |
| 15 Mar 1947 | 7+ | 74 | G3 |
| 16 Mar 1947 | 5- | 20 | G1 |
| 17 Mar 1947 | 5+ | 24 | G1 |
| 22 Mar 1947 | 5o | 21 | G1 |
| 23 Mar 1947 | 6+ | 33 | G2 |
| 24 Mar 1947 | 6o | 29 | G2 |
| 26 Mar 1947 | 5- | 26 | G1 |
| 27 Mar 1947 | 5- | 27 | G1 |
| 28 Mar 1947 | 7- | 75 | G3 |
| 29 Mar 1947 | 5- | 17 | G1 |
| 30 Mar 1947 | 6- | 35 | G2 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| March 1946 | 33.5 | 14 | 3 |
| March 1947 | 32.2 | 19 | 7 |
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 32.2 in March 1947, No. 19 of 1138 months since 1932; 19 days reached G1 or higher.