Some Federal Way schools will let out early this afternoon, and several roads were closed temporarily by police due to snowy weather.

The school district reported that all schools will be closed Tuesday. There will be no after school or athletic activities.

Federal Way Deputy Public Works Director Marwan Salloum reported around noon the following temporary road closures due to slippery conditions:

• 330th Street between 1st Avenue South and 3rd Avenue South,

• 320th Street eastbound between 4th Avenue Southwest and 1st Avenue,

• 11th Avenue Southwest between 323rd Street and 320th Street.

Salloum said that five of the city’s six snow response trucks were out plowing and distributing a sand and salt mixture. De-icing trucks were out Sunday night hitting trouble spots. He said that a combination of wet roads and expected freezing temperatures tonight are a concern. City plow crews have been switched to 12-hour shifts.

Federal Way is under the assault of a storm that could bring between up to 6 inches of snow by the end of Monday, according to National Weather Service forecasts. Tuesday is forecast to bring frigid temperatures — a high of 31 degrees. Heavier snow is forecast to fall on areas south of Olympia, and snow in the Federal Way area should taper off by 7 p.m. A winter weather advisory is in effect until 10 p.m. Wind gusts of between 30 and 40 mph have also been forecast.

Roads in Federal Way are slick. The sound of spinning tires could be heard Monday morning from cars traveling down the Pacific Highway South. South King Fire and Rescue reported as of 10:30 a.m. that it had responded to one snow-related call: A minor crash on Interstate 5 with no reported injuries.

The Washington Department of Transportation issued a press release Monday saying that it would be treating highways for snow, but cautioned drivers to be careful.

“The temperatures are getting lower, so any moisture will freeze overnight. And we expect snow and wind especially in the South Sound region near Olympia and south to Vancouver. We are pre-treating the roadways, but drivers need to be prepared and drive for conditions,” Maintenance Director Chris Christopher said in a release.

Driving times on highways between Seattle, Bellevue and Tacoma are expected to take longer, as minor crashes have been reported on highways and motorists are driving slowly.

King County Metro put all its buses on snow routes Monday. Snow routes can be viewed at metro.kingcounty.gov.