FQCN23 CWTO 200655
WAVE HEIGHT FORECASTS FOR THE CANADIAN PORTION OF THE GREAT LAKES
ISSUED BY ENVIRONMENT CANADA AT 3:00 A.M. EDT MONDAY 20 APRIL 2026
FOR TODAY TONIGHT AND TUESDAY.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 10:30 A.M. EDT.

WAVE HEIGHTS ARE FOR OFFSHORE AND ARE FORECAST FROM TROUGH TO CREST.
NEARSHORE WAVES MAY VARY CONSIDERABLY DUE TO SHORELINE EFFECTS.

WESTERN LAKE SUPERIOR.
OVER OPEN WATER WAVES 0.5 METRES OR LESS BUILDING TO 0.5 TO 1 NEAR
NOON AND TO 1 TO 1.5 EARLY THIS EVENING. WAVES SUBSIDING TO 0.5 TO 1
TUESDAY MORNING.

EASTERN LAKE SUPERIOR.
WAVES 1.5 TO 2 METRES.

WHITEFISH BAY.
OVER OPEN WATER WAVES 0.5 TO 1 METRE SUBSIDING TO 0.5 OR LESS EARLY
THIS MORNING THEN BUILDING TO 0.5 TO 1 EARLY THIS EVENING. WAVES
SUBSIDING TO 0.5 OR LESS NEAR NOON TUESDAY.

NORTHERN LAKE HURON.
WAVES 1 TO 1.5 METRES SUBSIDING TO 0.5 LATE THIS MORNING THEN
BUILDING TO 1 TO 1.5 THIS EVENING. WAVES BUILDING TO 2 OVERNIGHT THEN
SUBSIDING TO 1.5 NEAR NOON TUESDAY AND TO 0.5 TUESDAY EVENING.

SOUTHERN LAKE HURON.
WAVES 1 TO 1.5 METRES SUBSIDING TO 0.5 TO 1 EARLY THIS MORNING THEN
BUILDING TO 2 OVERNIGHT. WAVES SUBSIDING TO 1 TO 1.5 NEAR NOON
TUESDAY AND TO 0.5 OR LESS TUESDAY EVENING.

NORTHERN GEORGIAN BAY.
WAVES 1 TO 1.5 METRES.

SOUTHERN GEORGIAN BAY.
WAVES 1 TO 1.5 METRES.

LAKE ST. CLAIR.
WAVES 0.5 TO 1 METRE SUBSIDING TO 0.5 OR LESS NEAR NOON THEN BUILDING
TO 0.5 TO 1 NEAR MIDNIGHT. WAVES SUBSIDING TO 0.5 OR LESS TUESDAY
EVENING.

WESTERN LAKE ERIE.
WAVES 1 TO 1.5 METRES.

EASTERN LAKE ERIE.
WAVES 0.5 TO 1 METRE SUBSIDING TO 0.5 OR LESS NEAR NOON THEN BUILDING
TO 0.5 TO 1 TUESDAY MORNING. WAVES SUBSIDING TO 0.5 OR LESS TUESDAY
EVENING.

WESTERN LAKE ONTARIO.
WAVES 0.5 TO 1 METRE SUBSIDING TO 0.5 OR LESS NEAR NOON THEN BUILDING
TO 0.5 TO 1 TUESDAY EVENING.

EASTERN LAKE ONTARIO.
WAVES 1 TO 1.5 METRES SUBSIDING TO 0.5 TO 1 EARLY THIS MORNING AND TO
0.5 OR LESS NEAR MIDNIGHT. WAVES BUILDING TO 0.5 TO 1 NEAR NOON
TUESDAY.

END