With forecasters predicting that Massachusetts will get 1 to 4 inches of snow Tuesday night thanks to “a quick-hitting clipper system,” at least one school district has cancelled school on Wednesday, and several have delayed openings.

A winter weather advisory was in effect for Berkshire, Franklin, Essex, Middlesex, Suffolk and northern Worcester counties. It was in effect until early Wednesday morning. Communities in these regions were expecting 2 to 4 inches of snow and slippery roads during the Tuesday evening and Wednesday morning commutes, according to the National Weather Service.

The heaviest snow was expected between 8 p.m. Tuesday and 3 a.m. Wednesday, the weather service said. During this time, the snowfall could be as rapid as a half-inch to an inch per hour. The snow is predicted to taper off from west to east between 2 a.m. and 7 a.m. Wednesday morning.

The following school districts have announced closings or delays for Wednesday, Feb. 11. This list is continuously updated. To refresh this list, click here.