BOSTON (AP) — The snowstorm hitting Massachusetts has prompted Gov. Deval Patrick to tell all non-essential state employees working in the executive branch to stay home.

The storm that's expected to drop a foot or more of snow on some areas of the state Wednesday is making driving treacherous.

The state's trial courts have also been closed for the day.

Many school districts and colleges have canceled classes.

Boston's Logan International Airport remains open, but airport officials say flights in and out are being canceled and urged travelers to check with their airlines.

The state's emergency management bunker in Framingham has been placed on partial activation.