A late-season nor'easter is causing delays and cancellations for Memorial Day travelers on the roads, in the skies and on the water.

A slow-moving system means rain could force those planning outdoor activities in the central and southern U.S. this holiday weekend to come up with a Plan B on one or more days.

An unusual May nor'easter soaked New England on Thursday and threatened to bring snow to higher elevations as the states prepared for the Memorial Day holiday weekend.Nor'easters usually arrive in the end of fall and winter and bring high winds,

Memorial Day weekend in the US anticipates heavy travel, with potential weather disruptions east of the Rockies. Showers and thunderstorms are expected across the Plains and Mississippi valleys, posing flood risks.

A slow-moving storm system could dampen outdoor plans this weekend into Memorial Day, especially across the South.

A soggy Tuesday with possible severe storms, cooler temps, and a slow warm-up through the holiday weekend—get your full Chicagoland forecast here.