Viewing archive of Wednesday, 25 September 2019
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Reports
Solar activity
Auroral activity
Kp values
Solar wind (Speed, Density), Interplanetary Magnetic Field (IMF) (Bt, Bz)
Aurora Observations
Coronal hole faces Earth, G1 watch
A familiar coronal hole is facing our planet today. You might remember this transequatorial coronal hole because it faced our planet at the end of August and caused moderate G2 geomagnetic storm conditions on 31 August and minor G1 geomagnetic storm conditions on 1 and 2 September.
Latest news
Monday, 30 March 2026
X1.5 solar flare
Tuesday, 17 March 2026
M2.7 solar flare, CME arrival possible
Sunday, 1 February 2026
Complex sunspot region 4366
Latest forum messages
JHelioviewer Tips and Settings 48AR4414 11Comet C/2026 A1 (MAPS) for the southern hemisphere 64AR4415 4Incoming & Unnumbered Active Regions 263
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Space weather facts
| Last X-flare | 2026/03/30 | X1.5 |
| Last M-flare | 2026/04/04 | M1.0 |
| Last geomagnetic storm | 2026/04/03 | Kp7- (G3) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (3%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2026 | 85.9 +7.7 |
| April 2026 | 121 +35.1 |
| Last 30 days | 101.1 +44.7 |
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Aurora on this day in history
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