HALIFAX -- A low-pressure system moves up the St. Lawrence River Valley and crosses northern New Brunswick this weekend. As it approaches and passes a mix of snow, ice pellets, freezing rain, and rain is expected. TIMING This will be a late Saturday through Sunday weather event. Precipitation will start as early as Saturday evening in western areas of New Brunswick and the southwest of Nova Scotia. For New Brunswick it will be primarily snow and for Nova Scotia it will start as snow, but turn to rain moving into Sunday morning. By Sunday morning it will be raining across mainland Nova Scotia with Cape Breton and Prince Edward Island turning from snow to a brief period of ice pellets/freezing rain and finally over to rain. Southern areas of New Brunswick will turn to rain. Central areas of New Brunswick a mix of snow, ice pellets/freezing rain, and rain. Northern areas of New Brunswick mostly snow and ice pellets.