As someone above said, here in Massachusetts there was a radio advertisement for gas heating that warned of "the Montreal Express." Most weather we get here comes from southwest of us, but occasionally the winds will turn, and a storm will come down from Canada. When it happens in the winter, it's a cold blast of Arctic air that comes right down through Montreal on the map. Canadians wouldn't know the expression because it's a relative thing - it's weather that comes to us from Canada, and we're the ones who named it.