Geomagnetic K-index of 5 (G1 – Minor geomagnetic storm) threshold was reached at 11:42 UTC. Under G1 conditions, the area of impact is primarily poleward of 60 degrees Geomagnetic Latitude. Weak power grid fluctuations can occur, minor impact on satellite operations is possible, and aurora may be visible at high latitudes.
http://marygreeley.com/?p=56297
http://marygreeley.com/?p=56297