Aurora & Space WeatherGeomagnetic activity in 1989
Mean Ap19.5
G1+123days
G3+24days
G52days
G1+ days by month
- January 1989
- February 1989
- March 1989
- April 1989
- May 1989
- June 1989
- July 1989
- August 1989
- September 1989
- October 1989
- November 1989
- December 1989
Nearby years (G1+ days)
139
83
71
56
59
123
104
141
107
108
125
Top 10 days by Ap
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 13 Mar 1989 | 9o | 246 | G5 |
| 14 Mar 1989 | 9o | 158 | G5 |
| 21 Oct 1989 | 8+ | 146 | G4 |
| 20 Oct 1989 | 8+ | 112 | G4 |
| 17 Nov 1989 | 8o | 109 | G4 |
| 10 Jun 1989 | 7o | 78 | G3 |
| 15 Aug 1989 | 7- | 77 | G3 |
| 26 Apr 1989 | 7- | 76 | G3 |
| 29 Mar 1989 | 7o | 71 | G3 |
| 19 Sep 1989 | 8o | 70 | G4 |
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
1989 had 123 G1+ storm days (No. 14 of 95 years) and 24 G3+ days.