The meteorological service informed the storm on Monday, stating that extensive snowfalls of 30-50 cm are expected, along with north winds blowing from 70-90 km / h, giving occasional zero visibility. Environment Canadian meteorologist Kyle McAulay said that in some areas with higher altitudes, up to 80 cm of snow can fall. “This is going to be a very, very big, big storm,” McAulay said. A Colorado low-lying system is well on its way to hitting the county Tuesday night, when snow is expected to start, and heading north. Environment Canada says people living in stormy areas will need to raise supplies, including medicines, and prepare for possible extended power outages. “I would not expect to do anything on Wednesday. Try to do everything, if you can, for Tuesday,” he said. Alerts advise people not to travel during a storm. McAulay warned anyone who must drive, pack emergency supplies, warm clothing and let people know where they are headed. Conditions will begin to improve on Friday as winds recede and heavier snow moves east, “although clearing after this storm is likely to take a long time next week,” says Environment Canada. McAulay noted that the probability of this storm causing major damage is based on the type of snow that falls during the spring blizzards. “We expect the snow to be quite heavy and wet,” he said, adding that the snow is more compact with the overall humidity. “If you take about 10 centimeters of this snow and melt it, you will have a lot of water left over compared to what I would get, say in mid-January.” The weight of snow can cause trees to fall and even break poles and power lines. WATCH: How a woman helped the Nekaneet First Nation community during a major spring storm on April 5: A spring storm last week blew off much of southwestern Saskatchewan, parts of which have been without power since Monday morning. SaskPower said crews found it difficult to navigate the ground and deal with large areas of demolished lines. The company is expected to speak to CBC News on Monday about its preparations for the upcoming storm in southeastern Saskatchewan.