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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April 1997 |
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Monday Mon. |
Tuesday Tues. |
Wednesday Wed. |
Thursday Thurs. |
Friday Fri. |
Saturday Sat. |
Sunday Sun. |
1C3 Kp4+ | 2C3.06 Kp3 | 3C1.64 Kp4- | 4B1.49 Kp4 | 5B7.37 Kp4- | 6B3.46 Kp3+ | |
7C9.01 Kp3 | 8Kp2- | 9C1.99 Kp3- | 10Kp5 | 11Kp7- | 12Kp3+ | 13C1.18 Kp3+ |
14C1.6 Kp2 | 15C2.07 Kp2 | 16B4.51 Kp5 | 17B3.49 Kp5+ | 18Kp4- | 19Kp3+ | 20Kp2 |
21Kp5- | 22Kp5+ | 23Kp4- | 24Kp5- | 25Kp2+ | 26B9.74 Kp1 | 27Kp2- |
28Kp1 | 29Kp2- | 30Kp3+ | ||||
Latest news
X1.1 solar flare
Coronal hole faces Earth
Strong G3 geomagnetic storm watch for 23 March
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Latest alerts
00:00 UTC - Solar flare
Moderate M1.79 flare
Friday, 28 March 2025
23:36 UTC - Radio Blackout
Minor R1 radio blackout in progress (≥M1 - current: M1.04)
21:24 UTC - Hemispheric Power Index
The OVATION model predicts the Hemispheric Power Index to reach 51GW at 21:59 UTC
19:45 UTC - Solar flare
Moderate M1.16 flare
19:27 UTC - Radio Blackout
Minor R1 radio blackout in progress (≥M1 - current: M1.1)
Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/03/28 | M1.7 |
| Last geomagnetic storm | 2025/03/27 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2025 | 154.6 +17.6 |
| March 2025 | 128.3 -26.4 |
| Last 30 days | 128.3 -23.7 |