The Sun produced a strong X3.3 flare on 24 October. The associated coronal mass ejection, expected to deliver a glancing blow, actually arrived on 26 October at 15:35UTC (DSCOVR). A minor geomagnetic storm is expected. ***UPDATED (2)***
SIDC News
The STCE's SC25 Tracking page has been updated to reflect the latest evolution of some critical space weather parameters for the ongoing solar cycle 25 (SC25).
The impact of the severe geomagnetic storm of 10-11 October was felt in various domains.
On October 3, the Sun unleashed its most powerful eruption since 2017: a solar flare classified as X9.0 on the GOES scale, accompanied by a significant coronal mass ejection. We also observed a signal related to this flare in the Herzberg channel which is extremely rare.
NOAA 3848 produced a long duration X1 flare early on 9 October. The associated coronal mass ejection (CME) has arrived around 14:45UTC. The severe geomagnetic storm is nearing its end. ***UPDATED (5)***
After all the excitement surrounding the Great American Eclipse earlier this year, it is easy to forget that another one of these mesmerising was scheduled for the fall. The PROBA2 team prepared for special observations on October 2 when the instruments onboard had a first row seat of the eclipse.
Following the X7 flare late on 1 October, NOAA 3842 produced an X9.0 flare on 3 October. This is the strongest flare so far this solar cycle (SC25) ***UPDATED (4)***
The Top 10 of strongest solar flares, proton events, and geomagnetic storms so far during the current solar cycle (SC25).
The Sun has been very active during the last few months. Since April this year, many large and complex sunspot groups have adorned the solar disk driving the daily sunspot number regularly to well above 250 (see the SIDC/USET image for 7 August underneath).
A compilation of some amazing solar eruptions that have been observed during the first half of September.
NOAA 3825 produced its 2nd X-class flare in as many days. The X4.5 flare peaked on 14 September at 15:29UTC. ***UPDATED (1)***
80 years ago, the Allies liberated Brussels, and this event did not go unnoticed by our solar observers!