Aurora & Space WeatherHome › Geomagnetic history › 2003
Geomagnetic storm on 18 Aug 2003 (G3)
Max Kp7+G3
Ap108No. 6 in 2003
Consecutive G1+ days9
Ap rank137since 1932
Kp by 3-hour slot (UTC)
6-
6+
7o
7-
7o
7+
6+
6o
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 15 Aug 2003 | 3+ | 11 | – |
| 16 Aug 2003 | 3- | 8 | – |
| 17 Aug 2003 | 5+ | 20 | G1 |
| 18 Aug 2003 | 7+ | 108 | G3 |
| 19 Aug 2003 | 6- | 19 | G2 |
| 20 Aug 2003 | 5o | 17 | G1 |
| 21 Aug 2003 | 6o | 58 | G2 |
Highest-Ap days of 2003
204
191
150
116
109
108
70
66
61
60
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 108: No. 137 of 34,615 days since 1932 by Ap.