FQCN10 CWTO 252216 TECHNICAL MARINE SYNOPSIS FOR THE CANADIAN PORTION OF THE GREAT LAKES AND THE ONTARIO PORTION OF THE ST. LAWRENCE RIVER ISSUED BY ENVIRONMENT CANADA AT 6:30 P.M. EDT TUESDAY 25 MARCH 2025 FOR TONIGHT AND WEDNESDAY. THE NEXT SCHEDULED SYNOPSIS WILL BE ISSUED AT 3:00 A.M. EDT WEDNESDAY. SYSTEMS POSITION. AT 6:30 P.M. EDT TONIGHT TROUGH FROM LOW LOCATED ON A LINE NORTHEAST-SOUTHWEST OVER SOUTHERN ONTARIO. BY 6:30 P.M. EDT WEDNESDAY TROUGH FROM LOW LOCATED ON A LINE NORTHEAST-SOUTHWEST OVER EASTERN ONTARIO. AT 6:30 P.M. EDT TONIGHT RIDGE LOCATED ON A LINE NORTHEAST-SOUTHWEST OVER WESTERN LAKE SUPERIOR. BY 6:30 P.M. EDT WEDNESDAY RIDGE LOCATED ON A LINE NORTHEAST-SOUTHWEST OVER LAKE HURON. AT 6:30 P.M. EDT TONIGHT COLD FRONT FROM LOW LOCATED ON A LINE NORTH-SOUTH OVER NORTHERN MANITOBA. BY 6:30 P.M. EDT WEDNESDAY COLD FRONT FROM LOW LOCATED ON A LINE EAST-WEST OVER NORTHWESTERN ONTARIO. END