Several inches of snowfall, slippery roads expected overnight and into Sunday

The first of multiple clipper systems heading toward the Chicago area is expected to blanket the region in several inches of snow and likely leave roads dangerously slippery.

Starting at midnight Saturday, a winter weather advisory is in effect through 9 a.m. Sunday for Cook, DuPage, Kane, Kendall, Lake, McHenry and northern Will counties.

The snowfall will be moderate to heavy at times, according to NBC 5 Storm Team Meteorologist Pete Sack. As the snow continues, temperatures will drop into the low-to-mid 20s.

Conditions are expected to be clear until midnight Saturday, followed by several hours of snowfall through Sunday morning that could drop between 2 to 5 inches of snow.

Salt spreaders and plows will be out across the region in response to the weather system.

More than 220 Chicago Department of Streets and Sanitation salt spreaders will be deployed overnight through the morning to “ensure roads are safe and passable,” the department said.

“Please allow extra time and drive according to conditions, leaving ample space between vehicles,” DSS said in a statement.

Evanston, where between 2 to 4 inches of snowfall is expected, requested residents comply with the snow parking ban on main thoroughfares so crews can clear the streets.

Farther south, near the I-88 corridor, snowfall rates of roughly 1 inch per hour are expected for several hours overnight Saturday, according to NWS.

By Sunday afternoon, the clouds are expected to clear out and the region will see sunshine, according to the NBC 5 Storm Team.

A second round of snow could come late Tuesday, followed by the possibility of additional snow showers on Wednesday, according to NBC Chicago Meteorologist Iisha Scott.