AURORA ALERT:

A geomagnetic storm is in progress. Sky watchers as far south as US states like Minnesota and Wisconsin, should be alert for auroras tonight. Good displays are already underway in Finland.

The storm began earlier today when a solar wind stream hit Earth's magnetic field. Reverberations, and bright lights in the sky, could continue for the next 24 hours.

- Quads, hailing from Grand Marsh Observatory atop Elk Castle Hill!