The aurora and solar activity archive
Searching for historical solar and auroral activity data? The archive is filled with data between the year 1996 and yesterday. You can choose a viewing mode to quickly look for days with interesting space weather and pick a day to view the archived data for that day with more detailed space weather data.
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December 2004 |
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Monday Mon. |
Tuesday Tues. |
Wednesday Wed. |
Thursday Thurs. |
Friday Fri. |
Saturday Sat. |
Sunday Sun. |
1M1.71 Kp4 | 2C1.05 Kp2- | 3M2.16 Kp1 | 4B7.04 Kp0 | 5B4.46 Kp4+ | ||
6B3.15 Kp4+ | 7Kp4- | 8C3.62 Kp3+ | 9C1.7 Kp3- | 10B1.8 Kp3 | 11B8.37 Kp4+ | 12B4.95 Kp5+ |
13B4.53 Kp4+ | 14B4.38 Kp2+ | 15B8.98 Kp2+ | 16B5.47 Kp4 | 17B5.6 Kp4 | 18B5.85 Kp4+ | 19C2.69 Kp1+ |
20B5.62 Kp2+ | 21C1.31 Kp4+ | 22C3.41 Kp4+ | 23C7.39 Kp2+ | 24C2.58 Kp2 | 25Kp4 | 26C1.42 Kp3 |
27B6.83 Kp3- | 28M1.04 Kp5- | 29M3.37 Kp4+ | 30M6.08 Kp5- | 31M1.8 Kp3- | ||
Latest news
Tuesday, 15 April 2025
CME arrival, G3 storm watch
Friday, 28 March 2025
X1.1 solar flare
Monday, 24 March 2025
Coronal hole faces Earth
Latest forum messages
AR 14079 95Power transmission for all of us. And why I believe we are better prepared than ever for major solar events 37Unspecified geomagnetic activity 2393Short PBS episode on Aurora sounds 8Incoming & Unnumbered Active Regions 1851
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Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/30 | M2.03 |
| Last geomagnetic storm | 2025/05/03 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2025 | 140.6 +6.4 |
| May 2025 | 58 -82.6 |
| Last 30 days | 114 -17.5 |