NOAA scientists on high alert for 2013 solar maximum

Solar maximum is still a year away. This month sky watchers got a taste of things to come when a powerful flare sparked Northern Lights over the United States as far south as Arkansas, Colorado and California.

Solar maximum is still a year away. This month sky watchers got a taste of things to come when a powerful flare sparked Northern Lights over the United States as far south as Arkansas, Colorado and California.

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