Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
---|---|---|---|---|---|
2004/04/15 | 1 | 60 | HSX | N15E69 | |
2004/04/16 | 2 | 60 | HSX | N15E56 | |
2004/04/17 | 2 | 70 | HAX | N15E40 | |
2004/04/18 | 4 | 50 | HAX | N15E27 | |
2004/04/19 | 6 | 20 | BXO | N15E14 | |
2004/04/20 | 1 | 10 | HSX | N15E00 | |
2004/04/21 | 1 | 20 | HSX | N15W13 |
B |
---|
1 |
Start | Maximum | End | ||||
---|---|---|---|---|---|---|
1 | B4.26 | 2004/04/20 | 06:37 | 06:41 | 06:45 |
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Minor G1 geomagnetic storm (Kp5) Threshold Reached: 01:50 UTC
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 20:20 UTC
Moderate M1.05 flare
Minor R1 radio blackout in progress (≥M1 - current: M1.05)
The OVATION model predicts the Hemispheric Power Index to reach 78GW at 10:32 UTC
Last X-flare | 2025/03/28 | X1.1 |
Last M-flare | 2025/04/05 | M1.0 |
Last geomagnetic storm | 2025/04/05 | Kp6- (G2) |
Spotless days | |
---|---|
Last spotless day | 2022/06/08 |
Monthly mean Sunspot Number | |
---|---|
March 2025 | 134.2 -20.4 |
April 2025 | 150.4 +16.2 |
Last 30 days | 131.6 -13.4 |