Was the snowfall so heavy, that flights were cancelled ... In the city it didn't look like.
No, there wasn't any snow at the ground in the city as I could see. But I hadn't travelled that far on the bus before I saw snow on the ground. And at a part of the road where my bus drove, the traffic had stopped completely in the early morning due to cars/trailers that got into trouble. And I saw several cars and buses covered in snow, after being parked for a while. So I'm not surprised that there was trouble at the airport as well.