Monday’s winter storm watch was upgraded to a blizzard watch by the National Weather Service on Sunday morning, Jan. 25.

The blizzard watch is in effect from Monday afternoon through Tuesday evening, according to the weather service. A blizzard could blanket Milford and the rest of the greater New York City metropolitan area with heavy snow and blowing snow that leaves one to two feet of snow — even higher in some areas.

Winds could be 20 to 30 mph with gusts up to 50 mph, according to the weather service, which also warns of visibility less than a quarter of a mile. Temperatures on Monday and Tuesday are expected to be in the low-20s.

The heaviest of the snow and strongest winds are expected overnight on Monday into Tuesday, according to the weather service.

Expect “extremely dangerous travel due to heavy snowfall and strong winds — with whiteout conditions likely,” according to the weather service’s blizzard watch bulletin. “Secondary and tertiary roads may become impassable. Strong winds may down power lines and tree limbs.”

A blizzard watch means there is a potential for falling and/or blowing snow with strong winds and extremely poor visibilities that could lead to whiteout conditions and make travel dangerous.