BISMARCK, N.D. (AP) — Freezing rain is falling in the northern Great Plains as the workweek begins.

The National Weather Service has issued freezing rain advisories for most of North Dakota and northeastern South Dakota for Monday, and says significant snow might follow in parts of both states Tuesday and Wednesday.

The weather began causing problems Sunday. The North Dakota Highway Patrol says it investigated 19 crashes on Interstate 94 between Medina and Fargo, four with injuries. None was considered life-threatening. In southwestern North Dakota, U.S. Highway 85 was shut down for several hours Sunday afternoon when a semitrailer went out of control on ice and crashed near Belfield.

Forecasters say half a foot to a foot of snow could fall in the Dakotas through midweek, followed by subzero temperatures late in the week.

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