While the snow squall watch remains in parts of Muskoka, areas in and around Huntsville and Parry Sound are now under a snow squall warning. Environment Canada says the squalls are developing in the cold westerly flow over Lake Huron and Georgian Bay. Gusting winds and up to 15 centimetres of snow expected tonight. The weather agency says  the squalls will get worse on Tuesday as we can expect another 15 to 25 centimetres. Wind gusts and blowing snow will reduce visibility to almost nothing in some areas. However, Environment Canada says conditions are expected to improve Tuesday night as the squalls shift south.