Viewing archive of Wednesday, 27 May 2015
The operational data in the graph above has been modified to remove the scaling factor that has been applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor in the operational data, flare indices for the operational data were reported as 42% smaller than for the science quality data. The scaling factor has also been removed from the solar flare list to reflect the true physical units.
The archive is not available for this date.
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Wednesday, 5 March 2025
Coronal hole faces Earth
Sunday, 23 February 2025
X2.0 solar flare from sunspot region 4001
Friday, 7 February 2025
Coronal hole faces Earth, Minor G1 geomagnetic storm watch
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CMEs from March 16-17 and small CH 61Incoming & Unnumbered Active Regions 1634Simultaneous Power Grid Failure/Blackout in couple of Balkan countries - first time in recorded history 24Large Coronal Hole 25 2Unspecified geomagnetic activity 2141
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Latest alerts
Wednesday, 19 March 2025
21:15 UTC - Geomagnetic activity
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 20:59 UTC
21:00 UTC - Solar flare
Moderate M1.54 flare
20:42 UTC - Radio Blackout
Minor R1 radio blackout in progress (≥M1 - current: M1.36)
17:12 UTC - Hemispheric Power Index
The OVATION model predicts the Hemispheric Power Index to reach 52GW at 18:01 UTC
00:54 UTC - Hemispheric Power Index
The OVATION model predicts the Hemispheric Power Index to reach 113GW at 01:33 UTC
Space weather facts
| Last X-flare | 2025/02/23 | X2.0 |
| Last M-flare | 2025/03/19 | M1.5 |
| Last geomagnetic storm | 2025/03/14 | Kp6- (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2025 | 154.6 +17.6 |
| March 2025 | 138.4 -16.2 |
| Last 30 days | 143 -10 |