The National Weather Service said the storm was expected to drop 15-30 centimeters of snow from the northern Plains states into Minnesota, Wisconsin and Upper Michigan.

Despite storm warnings for South Dakota, Manitoba is still expecting something lower than a 2009-level flood, says a flood expert.

Environment Canada says snow is forecast to begin in southwest Nova Scotia with 15 to 25 centimetres falling across the province's mainland before it turns into rain tomorrow evening.