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
Monday, 1 December 2025
X1.9 solar flare, Coronal hole faces Earth
Friday, 14 November 2025
X4.0 solar flare
Tuesday, 11 November 2025
X5.1 solar flare, G4 geomagnetic storm watch
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Electron event 5AR4294 / 4296 / 4298 320Growth of Cycle 25 973Filaments and prominences 408Changelog/Featurelog 176
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Space weather facts
| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/04 | M6.0 |
| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 175.4 +83.6 |
| Last 30 days | 107.3 +14.6 |