A snowstorm that brought a foot or more of snow to parts of the Northland on Wednesday could be just a prelude to the monster that is to come.

The National Weather Service is predicting anywhere from 13 to 19 inches of snow in the Twin Ports from a storm that is expected to begin on Saturday morning and intensify into Saturday night before finally winding down on Sunday afternoon or evening.

A winter storm watch was posted for the entire Northland from Friday evening through Sunday afternoon, along with a lakeshore flood watch for the Twin Ports from Saturday afternoon through Sunday afternoon.

Although at least 6 inches of snow is likely across a wide area, the weather service is expecting the heaviest amounts along the North and South shores, with up to 20 inches in the Silver Bay area and up to 19 inches in the Ashland area possible.

Strong winds will accompany the snow, likely making travel nearly impossible in those areas on Saturday afternoon and night, the weather service said.

As of Thursday afternoon, the weather service claimed “medium confidence” about snowfall amounts. Less snow was predicted from International Falls through the Iron Range to Grand Marais, and those amounts could prove to be much less still.

Moderate snowfall is expected to begin around midnight Saturday from Brainerd to Siren, Wis., around 3 a.m. from Walker, Minn., to Hayward, and around 6 a.m. from Grand Rapids to Duluth to Ashland. Snow will start around 9 a.m. Saturday from Big Falls to Virginia to Silver Bay, around noon in International Falls and around 3 p.m. from Ely to Grand Marais.

Gile, Wis., again gets the honors from Wednesday’s snowstorm with 20 inches of new snow, according to the National Weather Service.

Some of the other totals from Wednesday:

Near Cornucopia — 15.5 inches

Near Poplar — 12 inches

Butternut — 10.5 inches

East-southeast of Superior — 10.4 inches

Near Mahtowa — 10.3 inches

Holyoke — 9.5 inches

South of Ashland — 8.5 inches

Southwest of Duluth — 8.5 inches

Grand View — 8.5 inches

South of Herbster — 8 inches

North of Cloquet — 7.5 inches

Ashland — 7.1 inches

Duluth (National Weather Service office) — 7 inches

Sarona — 7 inches

Bennett — 6.5 inches

Madeline Island — 5.3 inches

Wolf Ridge — 5 inches

Two Harbors — 3.9 inches

Silver Bay — 3.5 inches