The aurora is not visible during daylight hours, NOAA writes.
The solar flare causing tonights storm occurred just before 3:00 p.m.
The ejections will merge and arrive at Earth overnight, NOAA says.
Aurora spotted earlier this year in Alaska.Photo: NOAA
Besides causing dazzling light shows,solar flares can disruptradio communications and the power grid.
In August,two large solar flares caused radio blackoutsacross North America.
Perhaps obviously, the flares also disrupt the operations of satellites orbiting Earth.
The Nov. 28 solar flare is visible as a bright spot on the Sun in this ultraviolet image.Image: NOAA Satellites
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