Border Land School Division. This photo kind of says it all about how the sudden shift in weather fortunes caught Winnipeggers off guard.(Tyson Koschik/CBC) Environment Canada blames a low pressure system stalled over northwestern Ontario for spreading the snow westward into Manitoba. Winnipeg has received about 20 centimetres so far, with more than half of that coming overnight into Tuesday morning. The city and areas closer to the international border were not initially included in Monday's snowfall warning but that changed in the afternoon. Winnipeg and areas south and southeast of it were added as the system muscled its way into more regions.