GRAND FORKS, N.D. - A winter storm is dropping heavy snow in some parts of the Dakotas and freezing rain in others, shutting down schools and creating problems for motorists.

The National Weather Service has issued storm warnings and advisories in the two states through tonight and into tomorrow in some areas.

Up to a foot of snow has fallen in northeastern North Dakota, while freezing rain was the main problem in southeastern North Dakota and parts of eastern South Dakota.

The storm with mixed precipitation and gusty winds is moving east out of Montana and crossed the Dakotas into Minnesota and Iowa.

No travel is advised in parts of southeastern North Dakota because of icy roads, and motorists are being urged to use caution in many in other areas. Many schools started late or called off classes for the day.