Major X9 flare, largest of this solar cycle erupted about 4 hours ago.
Radio emissions of both Type II and IV (large CME) including a rare Castelli U-Burst signature have been detected.
Coronagraphs are now indicating a full-halo beginning to be visible. The source of the flare appears to be AR3842 again and it was almost exactly facing earth. Full halo CMEs are ones aimed at observation point, in this case, near Earth geosynchronous orbit solar observatories.
We should begin to receive the fainter CME from the X7 event a couple days later today EDT…or early 10/4 UTC. Aurora should be visible starting tonight and likely for some time, perhaps days.
Too early to tell when today's impulsive burst CME will arrive, but radio and early visible observation seem to indicate that it was much more massive than the X7's and slower moving.
Monitoring this, things could get interesting in a few days. Not scary, just interesting, expect stronger and lower latitide aurora as is the norm lately and maybe some electromagnetic disturbances in the higher latitudes when it gets here. Tonights incoming aurora are from the X7 precursor…this should arrive somewhat later by a day or two. Estimations are being calculated. The sun is giving us a show…perhaps a warning. It is capable of much, much more.
https://www.swpc.noaa.gov/products/alerts-watches-and-warnings
https://www.swpc.noaa.gov/products/goes-x-ray-flux
https://www.solarham.com/index.htm
https://www.swpc.noaa.gov/communities/space-weather-enthusiasts-dashboard