April 17 (UPI) -- Nearly one-third of the United States -- the northern-most third of the country -- could be among areas the National Oceanic and Atmospheric Administration said could see the aurora borealis in the sky. The northern lights are expected to be most visible, for the second night in a row, across 18 states that fall within the expected viewline this evening, USA Today and Space.com reported. The solar winds hitting Earth at up to 430 miles per second will cause geomagnetic storms