Supercharged Auroras May Be Visible Across Northern US Tonight

Editor's update for 6:20 pm ET: The Space Weather Prediction Group released a revised alert at 6 p.m. ET today, lowering the geomagnetic storm class to a G1 and a K-index of 5, with auroras now expected to be visible from the northern tier of the U.S., such as northern Michigan and Maine. A geomagnetic storm kicked up by high-speed solar wind should amplify the northern lights tonight — making them potentially visible as low as Pennsylvania, Iowa and Oregon as the storm intensifies, space