The big picture: An incoming solar storm on Tuesday night will provide aurora viewers in many northern states and "some of the lower Midwest to Oregon" one last chance to catch the lights this year, the National Oceanic and Atmospheric Administration said.
A severe storm system that's killed at least four people as it unleashed multiple tornadoes was moving into parts of the central-southern Appalachians, Mid-Atlantic and Southeast on Sunday.
The big picture: Dozens of tornadoes were reported across Alabama, Arkansas, Georgia, Louisiana, Mississippi, North Carolina and Texas over the weekend, causing delays and some cancelations at airports across the region during a busy weekend of holiday travel.
