Aurora & Space WeatherHome › Geomagnetic history › 1997
Geomagnetic storm on 11 Apr 1997 (G3)
Max Kp7-G3
Ap37No. 7 in 1997
Consecutive G1+ days2
Ap rank1,916since 1932
Kp by 3-hour slot (UTC)
5o
7-
5-
2-
3+
4-
4-
4o
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 8 Apr 1997 | 2- | 4 | – |
| 9 Apr 1997 | 3- | 6 | – |
| 10 Apr 1997 | 5o | 13 | G1 |
| 11 Apr 1997 | 7- | 37 | G3 |
| 12 Apr 1997 | 3+ | 9 | – |
| 13 Apr 1997 | 3+ | 8 | – |
| 14 Apr 1997 | 2o | 4 | – |
Highest-Ap days of 1997
59
56
46
44
44
37
37
33
32
30
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
Max Kp 7-, Ap 37: No. 1,916 of 34,615 days since 1932 by Ap.