http://spaceweather.com

Solarflare20112GEOMAGNETIC STORM: An interplanetary shock wave (possibly a CME) hit Earth’s magnetic field during the late hours of May 31st, sparking a polar geomagnetic storm. At the time of this alert, a G1-class storm is underway and solar wind conditions favor high-latitude auroras.

Check http://spaceweather.com for details and updates.

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