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Geomagnetic activity in June 1977
Mean Ap7.5No. 969 of 1138
G1+ days0
G3+ days0
Max Ap142 Jun 1977
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| – | – | – | – |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| June 1976 | 9.7 | 7 | 1 |
| June 1977 | 7.5 | 0 | 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 7.5 in June 1977, No. 969 of 1138 months since 1932; 0 days reached G1 or higher.