With its negative polarity, geomagnetic storming is likely, and following right behind it are two large sunspot groups that are growing and flaring, with the larger sunspot group - 4100 - just having launched a big coronal mass ejection out into space, though not Earth-directed. Critical planetary geometry takes place on May 29-30th as Mercury performs its superior conjunction with the Sun, and increased solar activity and a magnetic storm on Earth is more likely during that time-frame than normal as a result. Complete space weather report by geophysicist Stefan Burns