Parry Sound-Muskoka is under a snow squall watch again. Environment Canada says a west flow off Lake Huron and Georgian Bay is expected to cause more flurries and snow squalls. The squalls will develop overnight with up to 10 centimetres expected and another 10 to 15 tomorrow morning. Poor visibility because of the gusting winds and blowing snow will happen at times. You may be in for a tough drive tomorrow morning, so the OPP is asking you to avoid driving if you can or at least drive according to the road conditions.