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Geomagnetic activity in March 1977
Mean Ap10.9No. 672 of 1138
G1+ days5
G3+ days0
Max Ap389 Mar 1977
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 8 Mar 1977 | 5- | 12 | G1 |
| 9 Mar 1977 | 5+ | 38 | G1 |
| 11 Mar 1977 | 5- | 18 | G1 |
| 26 Mar 1977 | 5o | 16 | G1 |
| 29 Mar 1977 | 5- | 14 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| March 1976 | 22.5 | 14 | 1 |
| March 1977 | 10.9 | 5 | 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 10.9 in March 1977, No. 672 of 1138 months since 1932; 5 days reached G1 or higher.