Geomagnetic storm lights up the sky with the Northern Lights

SAN FRANCISCO -- While they were not visible in the San Francisco Bay Area skies Sunday night, you didn't have to drive too far to see a specular show from the Northern Lights. A large-scale geomagnetic storm caused by disruptions in Earth's magnetic field was responsible for the heavenly show, but it came with a warning from the National Oceanic and Atmospheric Administration's Space Weather Prediction Center. "Power grid fluctuations can occur," the center said. "High-latitude power systems may experience voltage alarms. Satellite orientation irregularities may occur; increased drag on...