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 over the Thanksgiving holiday weekend, one of the nation's busiest travel periods.

One of the strongest storms we've seen in Massachusetts in quite a while will bring rain and snow on Thanksgiving.The holiday will essentially be a washout with rain expected from mid-morning until late in the evening Thursday.

Thursday will be a First Alert Weather Day as steady rain, wind and cooler temperatures arrive. Places north and west of New York City may also see some snow . Holiday travelers will catch a break Wednesday, but unfortunately they will have to navigate some wet weather on Thanksgiving.