Portions of the Midwest, Great Lakes and interior Northeast are seeing their first flakes of the season to end the week.

In less than 40 hours, a tiny ripple in some clouds over the Pacific became a very strong bombing cyclone as conveyor belts of various air masses twirled off the West Coast. Here’s what it looked like on satellite.

A powerful bomb cyclone left at least two dead and hundreds of thousands of people without power in the Northwest.

An atmospheric river of moisture could produce flooding rain and mudslides as well as heavy snow through the end of the week.

Here's a deep dive on how lake-effect snow develops and the extreme totals that can result.