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 1999 |
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Monday Mon. |
Tuesday Tues. |
Wednesday Wed. |
Thursday Thurs. |
Friday Fri. |
Saturday Sat. |
Sunday Sun. |
1C1.54 Kp2+ | 2C7.59 Kp2+ | 3C9.11 Kp4 | 4C6.16 Kp5 | 5C4.69 Kp4+ | ||
6M1.2 Kp4+ | 7M1.46 Kp4- | 8C6.23 Kp4- | 9C3.21 Kp4- | 10C5.3 Kp3+ | 11C4.13 Kp3+ | 12C1.19 Kp4- |
13C1.59 Kp6- | 14C1.7 Kp1+ | 15C3.6 Kp3 | 16C5.11 Kp2 | 17M1.54 Kp3- | 18M2.19 Kp3- | 19C8.09 Kp2 |
20C6.97 Kp2- | 21M1.61 Kp1 | 22M7.71 Kp0+ | 23C5.34 Kp2- | 24M1.21 Kp4 | 25C8.93 Kp3+ | 26C4.81 Kp2- |
27M2.91 Kp3+ | 28M6.5 Kp3+ | 29M1.27 Kp3+ | 30C3.56 Kp4+ | 31C3.89 Kp6- | ||
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
Latest forum messages
Incoming & Unnumbered Active Regions 16AR4294 / 4296 / 4298 31250 mhz F2 75AR 4299 24Current Farside Activity 236
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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 |