Comments:Northern lights may appear across Canada and northern U.S. late Tuesday night

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A spaceweather.com reader in Denmark uploaded a nice picture of green aurora just above the horizon.

• http://www.spaceweather.com/aurora/gallery_01aug10.htm

Some more lovely images were posted at that link, from Wisconsin, Michigan and Ontario. That is just so far south.

Tuesday night was cloudy for me, but I am glad the forecast worked out.

it's really good caught and images are good.

Basically the sun emits particles that travel towards the planets. These particles get deflected by Earth's magnetic field. When they get deflected they move towards the weakest points on said magnetic field, which happens to be the north magnetic pole, and south magnetic pole. When they get low enough into the atmosphere they interact with they air causing the colors.

I think it was bad taste of some newspapers to headline this "tsunami". While it would indeed be dangerous and dramatic if you were close to the Sun, here on Earth we should get nothing more than a nice light show (if we have cloudless skies.)