CBC meteorologist Peter Coade said this storm is expcted to be Nova Scotia's worst of the season so far.
"It will be moving into the Maritimes early Monday afternoon in southwestern Nova Scotia and southeast New Brunswick. Then, it will spread throughout the entire area by the evening hours," he said.
Western Nova Scotia will be hardest hit, Coade said, with between 30 and 50 centimetres of snow.
"There's a good possibility the snow will be changing into a mix of freezing rain or rain along the Atlantic coast, particularly in the eastern areas," he said.
The storm will also bring strong winds and blizzard–like conditions.
New Brunswick is expected to fare a little better in the storm, Coade said. In Fredericton, between 15 and 20 centimetres is expected.
The storm is also forecast to hit P.E.I., where the temperature could dip to –32 C with the wind chill.