Southwestern North Dakota can expect 4 to 8 inches of snow by Tuesday morning as another weather system moves across the state.

The low-pressure system, which had its genesis in the Rocky Mountains, began to move in this morning. Hettinger and Beach have already reported snow today.

By the time the system tapers off Tuesday, up to 8 inches of snow could be on the ground in a solid band from Watford City to Bismarck, the National Weather Service said.

The weather service said southwest and south central North Dakota have the potential for the heaviest snowfall. Those areas were also hit with moisture late last week when a different system moved through the state. The Dickinson area got 6 to 8 inches of snow on Friday, and Bismarck received about half an inch of rain.

There should be little or no rain with this new system, meteorologist Jim Fors said Monday. Anything that falls will probably be white.

"Primarily it looks like a band of wet snow will move across the area today and tonight," Fors said. "This time of year you can get a lot of snow to fall in a hurry."

Fors reiterated that the heaviest snows will likely occur in the southern part of the state. The weather service issued a winter storm warning for the area, which will go into effect from 6 p.m. today to 10 a.m. Tuesday.

Check http://www.bismarcktribune.com/weather for forecast information.