Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
---|---|---|---|---|---|
1998/09/23 | 5 | 10 | BXO | S20E22 | |
1998/09/24 | 12 | 60 | DAO | S20E09 | |
1998/09/25 | 14 | 70 | DSO | S20W04 | |
1998/09/26 | 12 | 70 | FSI | S18W16 | |
1998/09/27 | 7 | 70 | CSO | S20W31 | |
1998/09/28 | 1 | 30 | HSX | S21W48 | |
1998/09/29 | 1 | 40 | HSX | S22W62 | |
1998/09/30 | 2 | 20 | CSO | S21W75 |
C |
---|
2 |
Start | Maximum | End | ||||
---|---|---|---|---|---|---|
1 | C8.67 | 1998/09/24 | 08:09 | 08:14 | 08:19 | |
2 | C2.04 | 1998/09/23 | 22:20 | 22:26 | 22:30 |
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Active geomagnetic conditions (Kp4) Threshold Reached: 03:57 UTC
The OVATION model predicts the Hemispheric Power Index to reach 50GW at 03:23 UTC
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 21:36 UTC
Severe G4 geomagnetic storm (Kp8) Threshold Reached: 20:55 UTC
Strong G3 geomagnetic storm (Kp7) Threshold Reached: 19:25 UTC
Last X-flare | 2025/03/28 | X1.1 |
Last M-flare | 2025/04/15 | M1.2 |
Last geomagnetic storm | 2025/04/16 | Kp8- (G4) |
Spotless days | |
---|---|
Last spotless day | 2022/06/08 |
Monthly mean Sunspot Number | |
---|---|
March 2025 | 134.2 -20.4 |
April 2025 | 120.5 -13.7 |
Last 30 days | 118.3 -22.1 |