The aurora borealis, or northern lights, are actually giant electrical storms formed by solar flares from the sun that react with the Earth’s magnetic field. This midnight show draws thousands of visitors each winter to spend an hour outside at night, sometimes at minus 30ºC and more.
Water that has a few degrees below zero, freezes in time when the wave break through the ice. 
Auroras, sometimes called the northern and southern (polar) lights or aurorae, are natural light displays in the sky, usually observed at night, particularly in the polar regions. They typically occur in the ionosphere. They are also referred to as polar auroras.
In northern latitudes, the effect is known as the aurora borealis. The aurora borealis is also called the northern polar lights, as it is only visible in the sky from the Northern Hemisphere, with the chance of visibility increasing with proximity to the North Magnetic Pole. (Earth's is currently in the arctic islands of northern Canada.) Auroras seen near the magnetic pole may be high overhead, but from further away, they illuminate the northern horizon as a greenish glow or sometimes a faint red, as if the sun were rising from an unusual direction. The Aurora Borealis most often occurs near the equinoxes.
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