A cross-country storm, a blast of Arctic air and an outbreak of showers and thunderstorms are threatening to snarl traffic and pile up delays at airports through the Thanksgiving holiday weekend, one of the nation's busiest travel periods.

Further north, several inches of snow could cause disruptions across the Midwest and up into the Northeast. A Thanksgiving weather map published by AccuWeather shows the states expecting rain or snow on Thanksgiving. This could disrupt day-of travel for ...