A major storm has hit Kapuskasing, Hearst and Smooth Rock Falls.

Environment Canada says a low-pressure system from Colorado has swept through the area and most of Northeastern Ontario overnight.

The weather agency says the storm brought a heavy amount of snowfall between 30 to 40 cm in most areas along the Highway 11 corridor and will continue to until this afternoon.

Environment Canada says strong northeast winds will cause blowing snow that will lead to reduced visibility.

The weather agency says snowfall will gradually slow down into scattered flurries later tonight.

Environment Canada is suggesting to postpone non-essential travel until the conditions improve as highways and roads are expected to be snow covered and visibility reduced to almost nothing in heavy or blowing snow.