####018012463#### FZUS63 KMQT 301941 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 341 PM EDT Tue Apr 30 2024 For waters beyond 5 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. .SYNOPSIS...A weak 29.9 inch ridge is currently extending over Lake Superior and Lake Michigan. By this evening, a 29.6 inch low pressure over southern Minnesota is expected to track northeast toward western Lake Superior tonight. This low pressure weakens to 29.7 inches as it tracks east across the lake to northeastern Ontario by Wednesday evening. Ridging builds to 30.1 inches over the Upper Great Lakes Wednesday night, shifting east to the Lower Great Lakes and southern Ontario on Thursday. This shift precedes a 29.6 inch low pressure tracking across the Upper Mississippi Valley Thursday night. The low then lifts into northwestern Ontario on Friday. A weak 29.9 inch trough pivots across the lake on Saturday ahead of ridging that builds to 30.0 inches over the Great Lakes Basin on Sunday. LSZ162-010345- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 341 PM EDT Tue Apr 30 2024 /241 PM CDT Tue Apr 30 2024/ .LATE THIS AFTERNOON...South winds 5 to 15 knots. Waves calm to 2 feet. .TONIGHT...East winds 10 to 20 knots increasing to 20 to 30 knots after midnight, then backing northeast late. A chance of rain showers through midnight, then rain showers after midnight. Waves building to 4 to 7 feet occasionally to 9 feet. .WEDNESDAY...Northeast winds 15 to 25 knots backing west in the afternoon, then diminishing to 10 to 20 knots late. Patchy fog through early afternoon. A chance of rain showers. Waves building to 5 to 8 feet occasionally to 10 feet, then subsiding to 2 to 4 feet. .WEDNESDAY NIGHT...West winds 5 to 15 knots veering northwest after midnight, then veering east late. Waves subsiding to calm to 2 feet. .THURSDAY...Northeast winds 15 to 25 knots increasing to 20 to 30 knots by mid afternoon. A slight chance of rain showers through early afternoon, then rain showers likely by mid afternoon. Waves building to 5 to 8 feet occasionally to 10 feet. .THURSDAY NIGHT...East winds 20 to 30 knots diminishing to 15 to 25 knots after midnight. Rain showers. Waves building to 6 to 9 feet occasionally to 11 feet, then subsiding to 2 to 4 feet. .FRIDAY...Southwest winds 15 to 25 knots increasing to 20 to 30 knots by mid afternoon. A chance of rain showers. Waves building to 3 to 5 feet occasionally to 7 feet. .FRIDAY NIGHT...Southwest winds 15 to 25 knots diminishing to 10 to 20 knots after midnight. Waves subsiding to calm to 2 feet. .SATURDAY...Southwest winds 10 to 20 knots veering west. A chance of rain showers. Waves calm to 2 feet. .SUNDAY...Southwest winds 10 to 20 knots backing south. Waves calm to 2 feet. $$ LSZ263-010345- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 341 PM EDT Tue Apr 30 2024 .LATE THIS AFTERNOON...South winds 5 to 15 knots. Waves calm to 2 feet. .TONIGHT...East winds 5 to 15 knots increasing to 20 to 30 knots after midnight. A chance of rain showers through midnight, then rain showers after midnight. Waves building to 4 to 7 feet occasionally to 9 feet. .WEDNESDAY...East winds 20 to 30 knots backing north in the afternoon, then becoming west 10 to 20 knots late. Patchy fog through early afternoon. A chance of rain showers. Waves subsiding to 2 to 4 feet. .WEDNESDAY NIGHT...West winds 5 to 15 knots veering northwest after midnight. Waves subsiding to calm to 2 feet. .THURSDAY...East winds 5 to 15 knots becoming northeast 15 to 25 knots by mid afternoon. A chance of rain showers. Waves building to 2 to 4 feet. .THURSDAY NIGHT...East winds 15 to 25 knots increasing to 20 to 30 knots after midnight. Rain showers. Waves building to 3 to 5 feet occasionally to 7 feet. .FRIDAY...Southwest winds 20 to 30 knots. A chance of rain showers. Waves building to 3 to 6 feet occasionally to 8 feet. .FRIDAY NIGHT...Southwest winds 15 to 25 knots diminishing to 5 to 15 knots after midnight. Waves subsiding to 1 to 3 feet. .SATURDAY...Southwest winds 10 to 20 knots diminishing to 5 to 15 knots. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet. .SUNDAY...Southwest winds 10 to 20 knots becoming south 5 to 15 knots. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet. $$ LSZ264-010345- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 341 PM EDT Tue Apr 30 2024 .LATE THIS AFTERNOON...Southwest winds 5 to 15 knots. Waves calm to 2 feet. .TONIGHT...East winds less than 10 knots increasing to 15 to 25 knots. Rain showers after midnight. Waves building to 3 to 5 feet occasionally to 7 feet. .WEDNESDAY...East winds 15 to 25 knots backing northeast in the afternoon, then backing northwest late. Patchy fog. Rain showers likely through early afternoon. A chance of rain showers by mid afternoon. Waves building to 3 to 6 feet occasionally to 8 feet. .WEDNESDAY NIGHT...Northwest winds 15 to 25 knots diminishing to 5 to 15 knots after midnight. Waves subsiding to calm to 2 feet. .THURSDAY...North winds 5 to 15 knots becoming east 10 to 20 knots by mid afternoon. A slight chance of rain showers by mid afternoon. Waves calm to 2 feet. .THURSDAY NIGHT...East winds 15 to 25 knots increasing to 20 to 30 knots after midnight. Rain showers likely. Waves building to 3 to 5 feet occasionally to 7 feet. .FRIDAY...South winds 20 to 30 knots becoming southwest 15 to 25 knots by mid afternoon. A chance of showers. Waves building to 3 to 6 feet occasionally to 8 feet. .FRIDAY NIGHT...Southwest winds 15 to 25 knots diminishing to 5 to 15 knots after midnight. Waves subsiding to 1 to 3 feet. .SATURDAY...Southwest winds 5 to 15 knots. Waves subsiding to calm to 2 feet. .SUNDAY...West winds 5 to 15 knots backing southwest. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet. $$ LSZ265-010345- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 341 PM EDT Tue Apr 30 2024 .LATE THIS AFTERNOON...North winds 5 to 15 knots. Waves calm to 2 feet. .TONIGHT...Southeast winds 5 to 15 knots increasing to 10 to 20 knots after midnight, then becoming east 15 to 25 knots late. A slight chance of rain showers through midnight, then rain showers after midnight. Waves building to 3 to 5 feet occasionally to 7 feet. .WEDNESDAY...East winds 10 to 20 knots becoming northwest 15 to 25 knots in the afternoon, then increasing to 20 to 30 knots late. Patchy fog. A chance of rain showers. Waves subsiding to 2 to 4 feet, then building to 3 to 6 feet occasionally to 8 feet. .WEDNESDAY NIGHT...West winds 20 to 30 knots diminishing to 5 to 15 knots. Waves subsiding to calm to 2 feet. .THURSDAY...Northwest winds 5 to 15 knots veering east by mid afternoon. A chance of rain showers by mid afternoon. Waves calm to 2 feet. .THURSDAY NIGHT...East winds 10 to 20 knots increasing to 15 to 25 knots after midnight. Rain showers. Waves building to 2 to 4 feet. .FRIDAY...South winds 15 to 25 knots. A chance of showers. Waves subsiding to calm to 2 feet. .FRIDAY NIGHT...South winds 10 to 20 knots veering southwest after midnight. Waves calm to 2 feet. .SATURDAY...Southwest winds 10 to 20 knots. A chance of rain showers. Waves calm to 2 feet. .SUNDAY...West winds 10 to 20 knots backing south. Waves calm to 2 feet. $$ LSZ266-010345- Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore- 341 PM EDT Tue Apr 30 2024 .LATE THIS AFTERNOON...Northwest winds 10 to 20 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet. .TONIGHT...Southeast winds 5 to 15 knots becoming east 10 to 20 knots late. Patchy fog after midnight. Rain showers after midnight. Waves subsiding to calm to 2 feet, then building to 3 to 5 feet occasionally to 7 feet. .WEDNESDAY...East winds 15 to 25 knots becoming northwest 20 to 30 knots late. Patchy fog. A chance of rain showers. Waves building to 3 to 6 feet occasionally to 8 feet. .WEDNESDAY NIGHT...Northwest winds 20 to 30 knots diminishing to 10 to 20 knots after midnight. Waves building to 5 to 8 feet occasionally to 10 feet, then subsiding to 2 to 4 feet. .THURSDAY...Northwest winds 5 to 15 knots veering east by mid afternoon. A chance of rain showers by mid afternoon. Waves subsiding to calm to 2 feet. .THURSDAY NIGHT...East winds 10 to 20 knots increasing to 20 to 30 knots after midnight. Rain showers likely. Waves building to 3 to 5 feet occasionally to 7 feet. .FRIDAY...South winds 20 to 30 knots diminishing to 15 to 25 knots by mid afternoon. A chance of showers. Waves building to 3 to 6 feet occasionally to 8 feet. .FRIDAY NIGHT...South winds 10 to 20 knots. Waves subsiding to 1 to 3 feet. .SATURDAY...Southwest winds 10 to 20 knots veering west. A chance of rain showers. Waves subsiding to calm to 2 feet. .SUNDAY...West winds 10 to 20 knots backing south. Waves calm to 2 feet. $$ LSZ267-010345- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 341 PM EDT Tue Apr 30 2024 .LATE THIS AFTERNOON...West winds 10 to 20 knots. Patchy fog. Waves 2 to 4 feet subsiding to 1 to 3 feet. .TONIGHT...West winds 5 to 15 knots backing southeast after midnight, then increasing to 10 to 20 knots late. Patchy fog. Rain showers likely after midnight. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet. .WEDNESDAY...Southeast winds 15 to 25 knots becoming west 20 to 30 knots late. Patchy fog through early afternoon. Rain showers likely through early afternoon, then a chance of rain showers by mid afternoon. Waves building to 3 to 6 feet occasionally to 8 feet, then subsiding to 1 to 3 feet. .WEDNESDAY NIGHT...West winds 20 to 30 knots diminishing to 15 to 25 knots after midnight, then becoming northwest 10 to 20 knots late. Waves building to 5 to 8 feet occasionally to 10 feet, then subsiding to 2 to 4 feet. .THURSDAY...Northwest winds 5 to 15 knots veering northeast by mid afternoon. A slight chance of rain showers by mid afternoon. Waves subsiding to calm to 2 feet. .THURSDAY NIGHT...East winds 10 to 20 knots becoming southeast 20 to 30 knots after midnight. Rain showers likely. Waves building to 3 to 5 feet occasionally to 7 feet. .FRIDAY...Southeast winds 15 to 25 knots backing east by mid afternoon. Showers likely through early afternoon, then a chance of showers by mid afternoon. Waves building to 3 to 6 feet occasionally to 8 feet, then subsiding to 1 to 3 feet. .FRIDAY NIGHT...East winds 10 to 20 knots veering south after midnight. A chance of rain showers. Waves subsiding to calm to 2 feet. .SATURDAY...South winds 10 to 20 knots veering west. A chance of rain showers. Waves calm to 2 feet. .SUNDAY...West winds 10 to 20 knots backing southwest. Waves calm to 2 feet. $$ LSZ261-010345- MAFOR 3021/ Superior West 11400 11210 11230 11246 11146 11140 11830 11620. Waves 1 to 2 feet building to 4 to 8 feet tonight. Waves then subside to 3 to 5 feet Wednesday. Superior North Central 12600 11200 11220 12236 11230 11820. Waves 1 to 3 feet tonight. Waves 3 to 6 feet Wednesday. Superior South Central 11800 12310 11320 11336 12230 11740. Waves 1 to 3 feet tonight. Waves 3 to 5 feet Wednesday. Superior East 11720 11600 11400 11310 11326 11336 11330 11630. Waves 1 to 4 feet tonight building to 3 to 6 feet Wednesday. $$ Jablonski Experimental modernized open lake forecast is available online at weather.gov/mqt/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes ####018005782#### FZUS63 KMKX 301943 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Milwaukee/Sullivan WI 243 PM CDT Tue Apr 30 2024 FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON Lake Michigan. Waves are provided as a range of significant wave heights, which is the average of the highest 1/3 of the wave, along with the average height of the highest 10% of the waves which will occasionally be encountered. .SYNOPSIS... Southeast to south winds will increase tonight, as low pressure of 29.5 inches lifts northeast through northern Wisconsin. Breezy west to southwest winds are expected on Wednesday behind the departing low and as high pressure of 30.0 inches builds in from the west. Another low of 29.6 inches will lift through Wisconsin Thursday into Thursday night, bringing breezy east to southwest winds to the lake. LMZ261-362-364-366-563-565-567-868-010315- Lake Michigan from Seul Choix Point to Rock Island Passage 5 NM offshore to Mid Lake- Lake Michigan South of a line from Seul Choix Point to the Mackinac Bridge and north of a line from Charlevoix MI to South Fox Island 5 NM offshore- Lake Michigan from Charlevoix to Point Betsie MI 5 NM offshore to Mid Lake- Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to Mid Lake- Lake Michigan from Rock Island Passage to Sturgeon Bay WI- Lake Michigan from Sturgeon Bay to Two Rivers WI 5 NM offshore to Mid Lake- Lake Michigan from Two Rivers to Sheboygan WI 5 NM offshore to Mid Lake- Lake Michigan from Pentwater to Manistee MI 5 NM offshore to Mid Lake- 243 PM CDT Tue Apr 30 2024 SHEBOYGAN WI TO PENTWATER MI NORTH... .TONIGHT...South winds 10 to 15 kt becoming southeast late this evening, then increasing to 10 to 20 kt after midnight increasing to 15 to 25 kt late. Chance of rain showers and slight chance of thunderstorms overnight. Waves 1 to 3 ft building to 3 to 5 ft. .WEDNESDAY...South winds 15 to 25 kt becoming west. Chance of rain showers in the morning. Waves 3 to 5 ft. .WEDNESDAY NIGHT...West winds 10 to 20 kt becoming north 10 to 15 kt. Waves 3 to 5 ft subsiding to 1 to 3 ft. .THURSDAY...North winds 10 to 20 kt becoming east 10 to 15 kt. Chance of rain showers. Waves 1 to 2 ft building to 1 to 3 ft. .THURSDAY NIGHT...East winds 10 to 20 kt becoming southeast. Showers in the evening, then showers with a chance of thunderstorms overnight. Waves 2 to 4 ft. .FRIDAY...South winds 10 to 20 kt becoming southwest. Showers likely in the morning, then chance of showers in the afternoon. Waves 2 to 4 ft. .FRIDAY NIGHT...Southwest winds 10 to 15 kt becoming northwest. Waves 1 to 3 ft. .SATURDAY...Northeast winds 10 to 15 kt. Waves 1 to 2 ft. .SUNDAY...Northwest winds 10 to 15 kt backing to southwest 10 to 20 kt. Waves 1 to 2 ft. $$ LMZ080-669-671-673-675-777-779-870-872-874-876-878-010315- Lake Michigan from Michigan City IN to St. Joseph MI 5 NM offshore to Mid Lake- Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore to Mid Lake- Lake Michigan from Port Washington to North Point Light WI 5 NM offshore to Mid Lake- Lake Michigan from North Point Light to Wind Point WI 5 NM offshore to Mid Lake- Lake Michigan from Wind Point WI to Winthrop Harbor IL 5 NM offshore to Mid Lake- Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5 NM offshore to Mid Lake- Lake Michigan from Wilmette Harbor IL to Michigan City IN 5 NM offshore to Mid Lake- Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid Lake- Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to Mid Lake- Lake Michigan from Holland to Grand Haven MI 5 NM offshore to Mid Lake- Lake Michigan from South Haven to Holland MI 5 NM offshore to Mid Lake- Lake Michigan from St. Joseph to South Haven MI 5 NM offshore to Mid Lake- 243 PM CDT Tue Apr 30 2024 SHEBOYGAN WI TO PENTWATER MI SOUTH... .TONIGHT...Southeast winds 10 to 15 kt becoming south 10 to 20 kt after midnight, then increasing to 15 to 25 kt late. Chance of rain showers and slight chance of thunderstorms overnight. Waves 2 to 4 ft building to 3 to 5 ft. .WEDNESDAY...Southwest winds 15 to 25 kt becoming west. Waves 3 to 5 ft. .WEDNESDAY NIGHT...West winds 10 to 15 kt veering to northeast 5 to 10 kt. Waves 2 to 4 ft subsiding to 1 to 2 ft. .THURSDAY...East winds 10 to 15 kt increasing to 10 to 20 kt. Chance of rain showers. Waves 1 to 3 ft building to 2 to 4 ft. .THURSDAY NIGHT...Southeast winds 10 to 20 kt becoming south. Showers likely in the evening, then showers likely with a chance of thunderstorms overnight. Waves 2 to 4 ft. .FRIDAY...Southwest winds 10 to 20 kt becoming west 10 to 15 kt. Showers likely in the morning, then chance of showers in the afternoon. Waves 2 to 4 ft. .FRIDAY NIGHT...Northwest winds 10 to 15 kt becoming north. Waves 1 to 3 ft subsiding to 1 to 2 ft. .SATURDAY...Northeast winds 10 to 15 kt becoming north. Waves 1 to 2 ft. .SUNDAY...North winds 10 to 15 kt becoming northeast. Waves 1 to 3 ft. $$ LMZ761-010315- MAFOR 3022/ MICHIGAN NORTH 11410 11310 11320 11336 11430 11520 11530 11630. Waves 2 feet or less building to 2 to 4 feet tonight. Waves 2 to 4 feet Wednesday. MICHIGAN SOUTH 12310 11320 11430 12530 12630. A chance of showers overnight. Waves 1 to 3 feet building to 2 to 4 feet tonight. Waves 3 to 5 feet subsiding to 2 to 4 feet Wednesday. $$ Boxell Experimental modernized open lake forecast is available online at weather.gov/mkx/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes