440 FZUS53 KDLH 201600 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 1100 AM CDT Wed May 20 2026 For waters within five nautical miles of shore on Lake Superior. Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. LSZ140-202200- Grand Portage to Grand Marais MN- 1100 AM CDT Wed May 20 2026 .REST OF TODAY...South wind 10 to 15 knots. Mostly sunny. Waves 1 to 2 feet. .TONIGHT...Southwest wind 10 to 15 knots easing to 5 knots after midnight, then becoming west early in the morning. Mostly clear. Waves 1 to 2 feet. .THURSDAY...Southeast wind 5 to 10 knots. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...East wind 5 to 10 knots becoming northeast after midnight. Partly cloudy. Waves 1 to 2 feet. $$ LSZ141-202200- Grand Marais to Taconite Harbor MN- 1100 AM CDT Wed May 20 2026 .REST OF TODAY...South wind 5 to 10 knots. Mostly sunny. Waves 1 foot or less. .TONIGHT...East wind 5 knots early in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. .THURSDAY...Northeast wind 5 knots becoming east in the late morning and afternoon. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...Northeast wind 5 to 10 knots. Partly cloudy. Waves 1 to 2 feet. $$ LSZ142-202200- Taconite Harbor to Silver Bay Harbor MN- 1100 AM CDT Wed May 20 2026 .REST OF TODAY...South wind 5 knots. Partly sunny late in the morning then clearing. Waves 1 foot or less. .TONIGHT...Northeast wind 5 knots early in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. .THURSDAY...Variable winds 10 knots or less becoming east 5 knots in the late morning and afternoon. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...Northeast wind 5 knots. Partly cloudy. Waves 1 foot or less. $$ LSZ143-202200- Silver Bay Harbor to Two Harbors MN- 1100 AM CDT Wed May 20 2026 .REST OF TODAY...Southeast wind 5 knots. Partly sunny late in the morning then clearing. Waves 1 foot or less. .TONIGHT...Northeast wind 5 knots. Mostly clear. Waves 1 foot or less. .THURSDAY...Northeast wind 5 to 10 knots. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...Northeast wind 5 to 10 knots. Partly cloudy. Waves 1 foot or less. $$ LSZ144-202200- Two Harbors to Duluth MN- 1100 AM CDT Wed May 20 2026 .REST OF TODAY...Southeast wind 5 knots becoming east late. Mostly sunny. Waves 1 foot or less. .TONIGHT...Northeast wind 5 knots. Mostly clear. Waves 1 foot or less. .THURSDAY...East wind 5 to 10 knots. Sunny. Waves 1 foot or less. .THURSDAY NIGHT...Northeast wind 5 to 10 knots. Partly cloudy. Waves 1 to 2 feet. $$ LSZ145-202200- Duluth MN to Port Wing WI- 1100 AM CDT Wed May 20 2026 .REST OF TODAY...Southeast wind 5 knots becoming east late. Sunny. Waves 1 foot or less. .TONIGHT...East wind 5 knots. Mostly clear. Waves 1 foot or less. .THURSDAY...Northeast wind 5 to 10 knots. Gusts up to 20 knots late in the afternoon. Sunny. Waves 1 to 2 feet. .THURSDAY NIGHT...Northeast wind 10 to 15 knots easing to 5 knots after midnight. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 to 2 feet. $$ LSZ146-202200- Port Wing to Sand Island WI- 1100 AM CDT Wed May 20 2026 .REST OF TODAY...Southeast wind 5 knots late in the morning becoming variable 10 knots or less, then becoming east 5 knots late. Sunny. Waves 1 foot or less. .TONIGHT...Southeast wind 5 knots in the evening becoming variable 10 knots or less, then becoming northeast 5 knots early in the morning. Mostly clear. Waves 1 foot or less. .THURSDAY...Variable winds 10 knots or less becoming northeast 5 to 10 knots in the late morning and afternoon. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...Northeast wind 5 to 10 knots. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. $$ LSZ147-202200- Sand Island to Bayfield WI- 1100 AM CDT Wed May 20 2026 .REST OF TODAY...East wind 5 knots becoming southeast late. Sunny. Waves 1 foot or less. .TONIGHT...Southeast wind 5 knots until early morning becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. .THURSDAY...Southeast wind 5 knots becoming east in the late morning and afternoon. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...East wind 5 to 10 knots until early morning becoming variable 10 knots or less. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. $$ LSZ150-202200- Outer Apostle Islands Beyond 5 NM from Mainland- 1100 AM CDT Wed May 20 2026 .REST OF TODAY...Southeast wind 5 knots. Sunny. Waves 1 foot or less. .TONIGHT...Southeast wind 5 knots. Mostly clear. Waves 1 foot or less. .THURSDAY...South wind 5 knots becoming east in the afternoon. Sunny. Waves 1 foot or less. .THURSDAY NIGHT...East wind 5 to 10 knots becoming southeast after midnight. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 to 2 feet. $$ LSZ121-202200- Chequamegon Bay-Bayfield to Oak Point WI- 1100 AM CDT Wed May 20 2026 .REST OF TODAY...East wind 5 knots. Mostly sunny. Waves 1 foot or less. .TONIGHT...East wind 5 knots becoming southeast after midnight, then becoming variable 10 knots or less early in the morning. Mostly clear. Waves 1 foot or less. .THURSDAY...South wind 5 knots becoming east in the afternoon. Sunny. Waves 1 foot or less. .THURSDAY NIGHT...East wind 5 to 10 knots in the evening becoming variable 10 knots or less. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. $$ LSZ148-202200- Oak Point to Saxon Harbor WI- 1100 AM CDT Wed May 20 2026 .REST OF TODAY...East wind 5 knots. Mostly sunny. Waves 1 foot or less. .TONIGHT...East wind 5 knots becoming south after midnight. Mostly clear. Waves 1 foot or less. .THURSDAY...South wind 5 knots becoming northeast in the afternoon. Sunny. Waves 1 foot or less. .THURSDAY NIGHT...East wind 5 to 10 knots becoming south after midnight. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH  766 FZUS53 KIWX 201607 NSHIWX Nearshore Marine Forecast National Weather Service Northern Indiana 1207 PM EDT Wed May 20 2026 For waters within five nautical miles of shore on Lake Michigan LMZ046-202015- Michigan City IN to New Buffalo MI- 1207 PM EDT Wed May 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...North winds 10 to 15 knots. Partly sunny. Waves 2 to 4 feet. .TONIGHT...North winds 10 to 15 knots becoming northeast. Partly cloudy. Waves 2 to 4 feet. .THURSDAY...East winds 10 to 15 knots becoming north. Mostly sunny. Waves 1 to 3 feet. .THURSDAY NIGHT...Northeast winds 5 to 15 knots becoming east. Partly cloudy. Waves 1 to 3 feet. The water temperature at St. Joseph is 54 degrees and at Michigan City is 55 degrees. $$ LMZ043-202015- New Buffalo MI to St Joseph MI- 1207 PM EDT Wed May 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...North winds 10 to 15 knots. Gusts up to 25 knots. Partly sunny. Waves 2 to 4 feet. .TONIGHT...North winds 10 to 15 knots becoming northeast. Gusts up to 25 knots. Partly cloudy. Waves 3 to 5 feet subsiding to 2 to 4 feet. .THURSDAY...East winds 5 to 15 knots becoming north. Mostly sunny. Waves 1 to 3 feet. .THURSDAY NIGHT...Northeast winds 5 to 15 knots becoming east. Partly cloudy. Waves 1 to 2 feet. The water temperature at St. Joseph is 54 degrees and at Michigan City is 55 degrees. $$  063 FZUS53 KMKX 201610 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 1110 AM CDT Wed May 20 2026 For waters within five nautical miles of shore on Lake Michigan LMZ643-202200- Sheboygan to Port Washington WI- 1110 AM CDT Wed May 20 2026 .REST OF TODAY...Northeast wind 10 to 15 knots. Mostly sunny. Waves 1 to 3 feet. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots after midnight. Partly cloudy. Waves 2 to 4 feet. .THURSDAY...Northeast wind 10 to 15 knots. Mostly sunny in the morning then becoming mostly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .THURSDAY NIGHT...Northeast wind 15 to 20 knots easing to 10 to 15 knots late in the evening, then becoming east 15 to 20 knots after midnight easing to 10 to 15 knots early in the morning. Mostly cloudy. Waves 2 to 4 feet. $$ LMZ644-202200- Port Washington to North Point Light WI- 1110 AM CDT Wed May 20 2026 .REST OF TODAY...Northeast wind 10 to 15 knots. Mostly sunny. Waves 1 to 3 feet building to 2 to 4 feet late in the afternoon. .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots rising to 15 to 20 knots after midnight, then becoming northeast 15 to 20 knots early in the morning. Partly cloudy. Waves 3 to 4 feet. .THURSDAY...Northeast wind 15 to 20 knots easing to 10 to 15 knots late in the morning, then becoming northeast 10 to 15 knots in the afternoon. Mostly sunny in the morning then becoming mostly cloudy. Waves 3 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .THURSDAY NIGHT...Northeast wind 15 to 20 knots veering east early in the morning. Mostly cloudy. Waves 3 to 4 feet. $$ LMZ645-202200- North Point Light to Wind Point WI- 1110 AM CDT Wed May 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM CDT THIS AFTERNOON THROUGH THURSDAY AFTERNOON... .REST OF TODAY...Northeast wind 10 to 15 knots with gusts to around 20 knots. Mostly sunny. Waves 2 to 4 feet. .TONIGHT...Northeast wind 15 to 20 knots. Partly cloudy. Waves 3 to 4 feet. .THURSDAY...Northeast wind 15 to 20 knots easing to 10 to 15 knots late in the morning, then becoming northeast 10 to 15 knots in the afternoon. Mostly sunny in the morning then becoming mostly cloudy. Waves 3 to 4 feet. .THURSDAY NIGHT...Northeast wind 15 to 20 knots veering east 10 to 20 knots after midnight. Mostly cloudy. Waves 3 to 4 feet. $$ LMZ646-202200- Wind Point WI to Winthrop Harbor IL- 1110 AM CDT Wed May 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM CDT THIS AFTERNOON THROUGH THURSDAY AFTERNOON... .REST OF TODAY...Northeast wind 10 to 15 knots with gusts to around 20 knots. Sunny. Waves 2 to 4 feet. .TONIGHT...North wind 15 to 20 knots becoming northeast 10 to 15 knots late in the evening, then rising to 15 to 20 knots after midnight becoming northeast 15 to 20 knots early in the morning. Partly cloudy. Waves 3 to 4 feet building to 4 to 6 feet after midnight. .THURSDAY...Northeast wind 15 to 20 knots becoming east 10 to 15 knots late in the morning, then backing northeast early in the afternoon becoming northeast 10 to 15 knots with gusts to around 20 knots late in the afternoon. Partly sunny. Waves 3 to 4 feet. .THURSDAY NIGHT...Northeast wind 15 to 20 knots veering east after midnight. Mostly cloudy. Waves 3 to 4 feet. $$ See Lake Michigan Open Waters Forecast for Friday through Sunday.  160 FZUS53 KGRB 201638 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 1138 AM CDT Wed May 20 2026 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-202200- Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little Sturgeon Bay WI- Green Bay south of line from Oconto WI to Little Sturgeon Bay WI- 1138 AM CDT Wed May 20 2026 .THIS AFTERNOON...NE wind 5 to 10 kts veering E early in the afternoon. Waves 2 ft or less. Partly cloudy during the morning then becoming mostly sunny. .TONIGHT...NE wind 5 to 10 kts. Waves 2 ft or less. Mostly clear. .THURSDAY...NE wind 10 to 15 kts. Waves 2 ft or less. Partly sunny. .THURSDAY NIGHT...E wind 5 to 10 kts. Waves 2 ft or less. Partly cloudy in the evening then becoming mostly cloudy. $$ LMZ541-202200- Rock Island Passage to Sturgeon Bay WI- 1138 AM CDT Wed May 20 2026 .THIS AFTERNOON...NE wind 5 to 10 kts veering E early in the afternoon. Waves 2 ft or less. Mostly sunny. .TONIGHT...NE wind 5 to 10 kts. Waves 2 ft or less. Mostly clear. .THURSDAY...NE wind 10 to 15 kts. Waves 2 ft or less. Partly sunny. .THURSDAY NIGHT...E wind 10 to 15 kts. Waves 2 ft or less. Partly cloudy in the evening then becoming mostly cloudy. $$ LMZ542-543-202200- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 1138 AM CDT Wed May 20 2026 .THIS AFTERNOON...E wind 10 to 15 kts. Waves 1 to 3 ft. Mostly sunny during the morning then becoming partly cloudy. .TONIGHT...NE wind 10 to 15 kts. Waves 1 to 3 ft. Partly cloudy. .THURSDAY...NE wind 10 to 15 kts. Waves 1 to 3 ft. Partly cloudy in the morning then becoming mostly cloudy. .THURSDAY NIGHT...NE wind 10 to 15 kts veering E after midnight. Waves 1 to 3 ft. Mostly cloudy. $$ See Lake Michigan Open Lake Forecast for Friday through Sunday. Wave height forecast is for ice free areas.