Nearly half of US may see northern lights Thu.
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According to the Cincinnati Astronomical Society, the Kp index, which is used to characterize the magnitude of geomagnetic storms, is reading near 7. Typically, for the aurora to be visually present in Southern Ohio, the Kp index needs to be closer to 8, but Cincinnatians could "still see some auroral glow via camera imaging," the society said.
A solar storm could bring the northern lights to U.S. skies tonight—see if your state is on the aurora visibility map.
Some areas in Alaska and Canada could see a show in the night sky on July 23, while chances of catching the aurora in the northern contiguous U.S are lower. Parts of nearly a dozen states along the northern tier of the U.S. have a low chance of seeing ...