Boston schools will be closed Monday as the city braces for the second snow storm in a week.

Mayor Marty Walsh announced Sunday night that the school district preemptively canceled classes due to a winter storm warning that will last from 4 a.m. through 7 a.m. Tuesday.

The storm is expected to bring heavy snow and high winds, Walsh's office said. Overall, eight to 12 inches is expected in the city with gusts up to 40 mph.

The city will dispatch over 500 trucks to pre-treat roads in Boston ahead of the Monday morning commute, Walsh said.

Since Friday's snow, 11,000 tons of salt have been replenished and the city has 40,000 tons of salt available citywide, Walsh said.

A snow emergency had not been declared in Boston as of 7 p.m. Sunday, though Somerville declared a snow emergency effective 5 a.m. Monday. Somerville schools would be closed Monday, and all cars in that city must be moved by 9 a.m. to avoid ticketing and towing, city officials said.