Old sunspot AR3664, which caused the May 10th superstorm, has returned. This is its 3rd trip across the solar disk. Per tradition, it has been re-numbered 3 times: Originally AR3664, then AR3697, now AR3723. X-flares are possible as it once again turns to face Earth.
https://spaceweather.com
Mike Terry to WOR iog (2024-06-25)