Giant sunspot 652, the source of so much geomagnetic activity in recent days, is decaying. But it's still big and it still poses a threat for major X-class solar flares. The active region will be on the Earth-facing side of the sun for a few more days until solar rotation carries it over the sun's western limb. After that, geomagnetic activity should return to low levels.
An intense geomagnetic storm that sparked auroras in many US states last night is subsiding. The storm began around 2300 UT (4:00 p.m. PDT) on July 26th when a coronal mass ejection hit Earth's magnetic field, and it was sustained through the night by a south-pointing IMF.
