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
CME arrival, G3 storm watch
X1.1 solar flare
Coronal hole faces Earth
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Latest alerts
Thursday, 24 April 2025
07:27 UTC - Hemispheric Power Index
The OVATION model predicts the Hemispheric Power Index to reach 50GW at 08:15 UTC
07:15 UTC - Geomagnetic activity
Active geomagnetic conditions (Kp4) Threshold Reached: 07:03 UTC
06:27 UTC - Coronal mass ejection arrival
CME impact detected - Current Solar Wind Speed 644km/sec - IMF: Bt (strength): 15nT & Bz: 0nT (South).
Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/22 | M1.3 |
| Last geomagnetic storm | 2025/04/21 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2025 | 134.2 -20.4 |
| April 2025 | 122.8 -11.4 |
| Last 30 days | 117.7 -15.6 |