A warning of significant snowfall warning has been issued regionally but the Weather Network forecast for Toronto is one of rain and snow. The precipitation is expected to begin Sunday morning with perhaps 5 to 10 cm of snow possible before the snow tapers heading into Monday. The areas near Lake Ontario will see wet snow or rain. The precipitation is the result of a Colorado Low that will track from Ohio towards the St. Lawrence River Sunday into Monday. There is still some uncertainty in model guidance as to the exact track of the low and the axis of heaviest snow. Environment Canada continues to continue to monitor data.