Parts of the Prairies are seeing an early winter as a powerful storm continues to dump snow on the region as it moves eastward.

Snowfall warnings remain in effect in Regina, Saskatoon and Winnipeg, with up to 30 centimetres of snow expected to fall in those areas by Saturday morning.

Hundreds of collisions have already been reported in the affected areas over the past 48 hours, with a section of the Trans Canada highway shut down near Calgary Thursday night because of the heavy snow.

Environment Canada is warning that high winds are expected to make for poor driving conditions with extensive blowing snow.

A number of flights were also cancelled. Air Canada advised Friday that passengers should check their flight status if they plan to travel through Calgary, Regina or Saskatoon.

In Calgary, another 10 centimetres of snow was expected Friday night and into Saturday morning, after some parts of southern Alberta were hit with up to 25 centimetres of snow overnight Thursday.

The influx of snow prompted three major Alberta ski resorts to open their slopes Friday.

The snow is expected to taper off by Saturday morning, after blanketing the prairies overnight. And by Saturday night, it’s projected to bring freezing rain to parts of Northern Ontario as it dies down.

Earlier in the week the same storm system hammered the U.S. East Coast with strong winds, rain and up to 15 centimetres of snow before making its way north.

The strong nor'easter weather system brought more harsh weather to areas of the U.S. East Coast still reeling from the damage caused by Superstorm Sandy, which left hundreds of thousands without power.

From Connecticut to Rhode Island, residents awoke Thursday morning to between seven and 15 centimetres of snow, while in Worcester, Mass., 20 centimetres fell.

In New York and New Jersey, residents got pounded with rain and winds gusting up to 96 km/h Wednesday night. Many residents, finally able to turn the lights back on this week after power was knocked out during Sandy, found themselves in darkness once again, using candles to light their homes and huddling under blankets to stay warm.

The storm caused the cancellation of about 600 flights, mainly in New York, Thursday.