FQCN13 CWTO 170655 MARINE FORECASTS FOR THE CANADIAN PORTION OF THE GREAT LAKES AND THE ONTARIO PORTION OF THE ST. LAWRENCE RIVER ISSUED BY ENVIRONMENT CANADA AT 3:00 A.M. EDT FRIDAY 17 APRIL 2026 FOR TODAY TONIGHT AND SATURDAY. THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 10:30 A.M. EDT. FOG IMPLIES VISIBILITY LESS THAN 1 MILE. WINDS ARE FOR OFFSHORE AREAS. NEARSHORE WINDS MAY VARY CONSIDERABLY DUE TO SHORELINE EFFECTS. WESTERN LAKE SUPERIOR. WIND EAST 15 KNOTS VEERING TO SOUTHEAST 20 THIS MORNING THEN INCREASING TO SOUTHEAST 30 THIS AFTERNOON. WIND DIMINISHING TO NORTHWEST 25 NEAR MIDNIGHT THEN BACKING TO WEST 25 NEAR NOON SATURDAY. WIND VEERING TO NORTHWEST 25 SATURDAY EVENING. SHOWERS AND FOG PATCHES TONIGHT WITH A RISK OF THUNDERSTORMS BECOMING SCATTERED FLURRIES OR SCATTERED SHOWERS AND ENDING SATURDAY MORNING. SCATTERED FLURRIES SATURDAY EVENING. FOG PATCHES DISSIPATING THIS MORNING. EASTERN LAKE SUPERIOR. WIND SOUTHEAST 15 KNOTS INCREASING TO SOUTHEAST 20 NEAR NOON AND TO SOUTHEAST 30 EARLY THIS EVENING. WIND BECOMING NORTHWEST 30 OVERNIGHT THEN BACKING TO WEST 30 SATURDAY AFTERNOON. WIND VEERING TO NORTHWEST 25 SATURDAY EVENING. SHOWERS AND FOG PATCHES BEGINNING THIS EVENING WITH A RISK OF THUNDERSTORMS BECOMING SCATTERED FLURRIES OR SCATTERED SHOWERS SATURDAY MORNING AND ENDING NEAR NOON SATURDAY. SCATTERED FLURRIES SATURDAY EVENING. FOG PATCHES DISSIPATING THIS MORNING. WHITEFISH BAY. WIND LIGHT INCREASING TO SOUTHEAST 15 KNOTS THIS MORNING AND TO SOUTHEAST 20 THIS AFTERNOON. WIND BECOMING NORTHWEST 20 SATURDAY MORNING THEN INCREASING TO NORTHWEST 30 NEAR NOON SATURDAY. WIND BACKING TO WEST 25 SATURDAY EVENING. SHOWERS OR SCATTERED FLURRIES BEGINNING NEAR MIDNIGHT WITH A RISK OF THUNDERSTORMS BECOMING SCATTERED FLURRIES SATURDAY AFTERNOON. FOG PATCHES DISSIPATING THIS MORNING. FOG PATCHES FORMING NEAR MIDNIGHT AND DISSIPATING SATURDAY MORNING. NORTHERN LAKE HURON. WIND LIGHT BECOMING EAST 10 KNOTS THIS MORNING THEN INCREASING TO SOUTHEAST 15 EARLY THIS EVENING. WIND INCREASING TO SOUTH 25 NEAR MIDNIGHT AND TO NORTHWEST 30 NEAR NOON SATURDAY. WIND DIMINISHING TO NORTHWEST 20 SATURDAY EVENING. SHOWERS SATURDAY WITH A RISK OF THUNDERSTORMS BECOMING SCATTERED FLURRIES OR SCATTERED SHOWERS. FOG PATCHES DISSIPATING SATURDAY AFTERNOON. SOUTHERN LAKE HURON. WIND LIGHT INCREASING TO SOUTHEAST 15 KNOTS EARLY THIS EVENING AND TO SOUTHEAST 25 NEAR MIDNIGHT. WIND VEERING TO SOUTH 25 SATURDAY MORNING THEN TO WEST 20 NEAR NOON SATURDAY. SHOWERS SATURDAY WITH A RISK OF THUNDERSTORMS. FOG PATCHES DISSIPATING THIS EVENING. FOG PATCHES FORMING NEAR MIDNIGHT AND DISSIPATING SATURDAY AFTERNOON. NORTHERN GEORGIAN BAY. WIND NORTHEAST 10 KNOTS BECOMING LIGHT NEAR NOON THEN INCREASING TO SOUTHEAST 15 THIS EVENING. WIND INCREASING TO SOUTHEAST 25 OVERNIGHT THEN BECOMING WEST 25 NEAR NOON SATURDAY. WIND VEERING TO NORTHWEST 20 SATURDAY EVENING. SHOWERS SATURDAY WITH A RISK OF THUNDERSTORMS. FOG PATCHES DISSIPATING SATURDAY EVENING. SOUTHERN GEORGIAN BAY. WIND LIGHT INCREASING TO SOUTHEAST 20 KNOTS THIS EVENING AND TO SOUTHEAST 25 OVERNIGHT. WIND VEERING TO SOUTH 20 SATURDAY MORNING THEN TO WEST 20 SATURDAY AFTERNOON. WIND VEERING TO NORTHWEST 15 SATURDAY EVENING. SHOWERS SATURDAY WITH A RISK OF THUNDERSTORMS. FOG PATCHES DISSIPATING SATURDAY EVENING. LAKE ST. CLAIR. WIND LIGHT BECOMING SOUTHEAST 10 KNOTS THIS AFTERNOON THEN INCREASING TO SOUTHEAST 15 NEAR MIDNIGHT. WIND VEERING TO SOUTH 20 SATURDAY MORNING THEN TO SOUTHWEST 20 NEAR NOON SATURDAY. WIND VEERING TO NORTHWEST 20 SATURDAY EVENING. SHOWERS SATURDAY WITH A RISK OF THUNDERSTORMS. FOG PATCHES DISSIPATING THIS MORNING. FOG PATCHES FORMING NEAR MIDNIGHT AND DISSIPATING SATURDAY AFTERNOON. WESTERN LAKE ERIE. WIND NORTH 10 KNOTS BECOMING LIGHT THIS MORNING THEN BECOMING EAST 10 THIS AFTERNOON. WIND INCREASING TO SOUTHEAST 15 THIS EVENING THEN VEERING TO SOUTH 20 OVERNIGHT. WIND VEERING TO SOUTHWEST 25 SATURDAY MORNING THEN TO WEST 20 SATURDAY AFTERNOON. WIND VEERING TO NORTHWEST 20 SATURDAY EVENING. SHOWERS SATURDAY WITH A RISK OF THUNDERSTORMS. FOG PATCHES DISSIPATING NEAR NOON. FOG PATCHES FORMING NEAR MIDNIGHT AND DISSIPATING SATURDAY AFTERNOON. EASTERN LAKE ERIE. WIND LIGHT BECOMING EAST 10 KNOTS THIS EVENING THEN INCREASING TO SOUTHEAST 15 OVERNIGHT. WIND VEERING TO SOUTH 20 SATURDAY MORNING THEN TO SOUTHWEST 25 SATURDAY AFTERNOON. SHOWERS SATURDAY WITH A RISK OF THUNDERSTORMS. FOG PATCHES DISSIPATING SATURDAY EVENING. WESTERN LAKE ONTARIO. WIND NORTHWEST 10 KNOTS BECOMING LIGHT THIS MORNING THEN BECOMING EAST 10 THIS EVENING. WIND INCREASING TO EAST 15 OVERNIGHT THEN VEERING TO SOUTHEAST 15 SATURDAY MORNING. WIND VEERING TO SOUTHWEST 20 SATURDAY AFTERNOON THEN TO NORTHWEST 15 SATURDAY EVENING. SHOWERS ENDING EARLY THIS MORNING. SHOWERS SATURDAY AFTERNOON AND EVENING WITH A RISK OF THUNDERSTORMS. FOG PATCHES DISSIPATING SATURDAY EVENING. EASTERN LAKE ONTARIO. WIND NORTHWEST 10 KNOTS VEERING TO NORTH 10 EARLY THIS MORNING THEN BECOMING LIGHT NEAR NOON. WIND INCREASING TO SOUTHEAST 15 OVERNIGHT AND TO SOUTHEAST 20 SATURDAY MORNING. WIND VEERING TO SOUTHWEST 25 SATURDAY EVENING. SHOWERS ENDING THIS MORNING. SHOWERS SATURDAY LATE IN THE DAY WITH A RISK OF THUNDERSTORMS. FOG PATCHES. KINGSTON TO CORNWALL. WIND NORTH 10 KNOTS BECOMING LIGHT NEAR NOON THEN BECOMING SOUTHEAST 10 SATURDAY MORNING. WIND INCREASING TO SOUTHEAST 15 NEAR NOON SATURDAY THEN VEERING TO SOUTHWEST 15 SATURDAY EVENING. SHOWERS ENDING THIS MORNING. SHOWERS AND FOG PATCHES SATURDAY EVENING WITH A RISK OF THUNDERSTORMS. FOG PATCHES DISSIPATING NEAR NOON. FOG PATCHES FORMING THIS EVENING AND DISSIPATING NEAR NOON SATURDAY. END