Overview

• NOAA and the Met Office report that a coronal mass ejection arriving June 1 produced a G3-level geomagnetic storm over North America.
• Alaska, Montana, North Dakota, Minnesota, Wisconsin and Michigan have the highest chances to see the aurora tonight, with fringe visibility into Illinois, Iowa and Nebraska.
• Experts say the best viewing window runs from 9 p.m. to 2 a.m. local time, with peak activity around midnight.
• Cloud cover and wildfire smoke in parts of the Midwest and New England may obstruct the display in some regions.
• Forecasters expect the lights to linger into June 3 at reduced intensity and recommend using smartphone night-mode and finding dark, northern horizons for the best shots.