EarthSky.org: Auroras possible for northern U.S. and similar latitudes July 14

The CME from the July 12 X-flare will arrive at Earth early on July 14. Aurora alert!

Space weather forecasters are saying that auroras might be seen at northerly U.S. latitudes in the hours between midnight and dawn on July 14, 2012 – in other words, tonight. The same will be true for similar latitudes around the world. The source is an X1.4-class solar flare that erupted from giant sunspot group 1520 July 12. The sunspot was directly facing Earth when the X-flare occurred. The flare caused a coronal mass ejection (CME), whose interaction with Earth’s magnetic field is highly likely to cause auroras, although no one knows precisely how far south they’ll be seen.

Likewise, the exact time of the aurora can’t be predicted. But space weather forecasters can predict when the CME will arrive with some certainty. It will be Saturday July 14, 2012 at 9:17 UTC plus/minus 7 hours. Here’s how to convert UTC to your time zone…

http://news360.com/article/60423252
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