Accumulating snow caused slick roads throughout the metro Saturday evening, leading to at least 50 crashes on highways in the metro alone.

As of 10:45 p.m., no fewer than 10 crashes of varying concerns were being reported on Interstate 94 between St. Paul and Minneapolis alone, according to Minnesota Department of Transportation reports, graphics and cameras.

MnDOT’s regional traffic map looked like a checkerboard of crashes.

At least 50 could be counted.

The heaviest snow was falling south of the metro.

Through 10pm, the highest snow report we have received is 4" from the band of heavier snow just south of the Twin Cities. #mnwx pic.twitter.com/x0oqBJDiB6 — NWS Twin Cities (@NWSTwinCities) December 11, 2016

Weekend snow is on tap for much of southern Minnesota and western Wisconsin, with 4 to 6 inches expected in the Twin Cities and more elsewhere. The snow will be followed next week by the season’s first subzero temperatures.

According to the National Weather Service, a slow-moving low pressure system will spread snow into western Minnesota on Saturday morning and eastern Minnesota and western Wisconsin during the afternoon and evening hours.

The snow will continue Saturday night and Sunday and then end from west to east Sunday night.

“It’s never going to be what you’d call heavy snow, but it’s going to be 20, 24 hours of near-constant snow,” said Eric Ahasic, a meteorologist with the National Weather Service Office in Chanhassen.

The heaviest snow accumulation is expected across far southern Minnesota and northern Iowa and adjoining areas of Wisconsin.

The Twin Cities are expected to see 4 to 6 inches of snow, with the heavier accumulations in the southern suburbs.

In southern Minnesota, northern Iowa and southwestern Wisconsin, 4 to 10 inches are expected.

A winter weather advisory has been posted for that area, including the Interstate 90 corridor, where travel conditions could become difficult in Minnesota and Wisconsin.

A high temperature of 14 is expected Saturday in the Twin Cities. The high rises into the mid-20s Sunday before beginning to plunge.

Temperatures will fall to zero Monday night. Single-digit highs are expected the rest of the week, with lows in the single digits below zero. Even colder temperatures are possible by next weekend.

“Last winter was way above normal,” Ahasic said. “So I guess we’re paying for it now.”