Heavy snow is falling across much of southwest and south-central North Dakota, making driving difficult in many areas and not advised in the far southwest.

The National Weather Service issued a winter storm warning through Saturday morning. Snowfall totals of 6 to 12 inches are possible.

A no travel advisory has been issued for far southwest North Dakota and a travel alert put in place for the Bismarck and Dickinson areas.

The state Transportation Department visibility is poor and roads are slushy in the southwest corner of the state, so no travel is advised in Hettinger, Mott, Flasher and surrounding areas.

A travel alert that's been extended to Bismarck, Dickinson and surrounding areas means drivers can still travel but might run into challenging winter weather driving conditions.