Boston snow maps for Saturday and Sunday, January 19

Branch, Hillsdale, Saint Joseph and Steuben Counties are under a Winter Storm Watch for a 24 hour period starting at 10:00 p.m. Friday night.

Snow will mix with rain and sleet at times, and the storm could last 24 hours through Sunday night, January 20, with the system wrapping up with evening snow showers.

Friday's storm also looks to be accompanied by strong winds and bitterly cold arctic air, which could reduce visibility and make travel very hard and unsafe.

The wind chill is expected to fall to negative 20 degrees in New York City on Monday and negative 29 degrees in Cincinnati. The wind will not only lead to snow gusts but also extremely risky windchills into the -20°C to -30°C range.

A First Alert Day will be in effect from noon Friday through 6 pm Saturday. Regardless, this is another big winter storm, with big snow potential at least for the northern half of the lower peninsula (if not us)...more great news for the ski resorts! Mixed precipitation is likely to stretch along the I-95 corridor from Washington to Boston.

The lower-elevation areas will not see as much snow, but there will be lots of ice.

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Any lingering precipitation is expected to end by late Friday morning, with a high of 40 degrees.

The first storm could drop between a coating to an inch of snow late Thursday into Friday morning before shifting to rain across MA, according to meteorologist Josh Wurster.

ADDITIONAL DETAILS: Travel could be very hard to impossible. Any accumulations should be relatively light with 1 inch to 2 inches possible. Snow & blowing snow will make travel extremely risky, or even impossible especially in the high country. Wind chills are below 0!

Hartford, Conn.: Snow is advancing into central southern New England by sunset or so Saturday. Any snow or ice accumulations are expected to be minor. New snow accumulation of 3 to 5 inches possible.

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