OTTAWA, Ont. – A snowfall warning is in effect for eastern Ontario and West Quebec, with heavy snow on the way Thursday night into Friday morning.

The national capital region could be digging out from under a blanket of 30 centimetres of snow by the time the storm clears on Saturday. South of the city, along the Seaway Valley, rain or freezing rain could add to the weather woes.

When the snow comes crashing into eastern Ontario, it will come hard and fast with 2-5 centimetres an hour.

The snow will also be accompanied by heavy winds and a chance of freezing rain.

“This is what we term ‘heart attack’ snow ,” said 1310News meteorologist Richard Zuroski. “The temperature is so close to the freezing mark – and with freezing rain associated with it – every shovel full is going to fee like a ton.”

The City of Ottawa has its 400 pieces of equipment ready to clear the snow.

“The highest priority is the 174 and transit-ways,” said Councillor Marianne Wilkinson.  “By Friday morning, plows will be out on hose two plus the major six-lane roads, like Baseline and Carling.”

Overnight parking restrictions will not be in place for Thursday because the City will not be on residential roads until Friday afternoon.  Restrictions will take effect Friday evening – which means, if you do not have a parking permit, you will get a ticket.

This Colorado low sprawled across the United States Midwest Wednesday. It’s the first major snowstorm to hit the Midwest this season, and it’s sweeping across the region, shuttering schools and creating dangerous driving conditions.

Forecasters are warning that heavy snowfall coupled with strong winds will create blizzard conditions Thursday from Kansas to Wisconsin. Wisconsin has issued a state of emergency.

The weather is also threatening to cause delays at O’Hare International Airport in Chicago, the nation’s second-busiest airport, ahead of the busy holiday weekend.

The heaviest snow is expected across a swath extending from northwest Missouri into Milwaukee, Chicago and Michigan. As much as a foot of snow could fall in some areas.