A winter storm warning has been extended for parts of Massachusetts and Rhode Island until 7 p.m. Friday. 

Those affected by the extended warning include Plymouth and Bristol counties. 

The storm warning also remains in effect until 5 p.m. for Middlesex, Essex, Norfolk, Bristol and Worcester counties.

Hazardous travel is expected, with possible snow accumulation from six to 10 inches. 

Heavy snow is expected to taper off mid-afternoon but could continue until 8 p.m. in Cape Cod and the islands.

Boston Public Schools were closed on Friday following the winter storm warning from the National Weather Service. 

Related: See our live interactive radar here

Officials say the slushy, heavy snow is expected to bring down tree limbs on power lines as the storm progresses.

In Canton, police are urging everyone to stay indoors because of falling tree limbs.

All after-school activities for Boston Public Schools have been canceled as well for Friday. 

Boston Centers for Youth and Families will have all facilities open from 7:30 a.m. to 6 p.m. Children ages 7 and older can be dropped off upon completion of a short intake form. 

Driving is treacherous as evidenced by this video from Beacon Hill.

Since a snow emergency has not been declared, there should be no space savers on the streets, the Boston mayor’s office said Thursday.

As the snow piles up in the Northeast, so do the power outages.

In Massachusetts, Eversource and National Grid combined are reporting nearly 21,000 homes and businesses without power.

Connecticut’s two major utilities are reporting nearly 16,000 customers without power combined.

National Grid also has about 3,500 Rhode Island customers without electricity.

Fewer than 1,000 scattered outages are being reported in New Hampshire.

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