Great Lakes Forecast
Issued by NWS
Issued by NWS
042 FZUS63 KMQT 270741 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 341 AM EDT Mon May 27 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 29.5 inch low over central Lake Michigan will deepen to 29.4 inches as it tracks across northern Lower Michigan this morning and then into Quebec by Tuesday morning. In its wake, a 30.3 inch high pressure builds over the Northern Plains on Tuesday. This high pressure parks over the Upper Great Lakes Wednesday and stays put through Thursday. The high begins to slowly move towards the rest of the lower Great Lakes region Friday. LSZ162-271545- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 341 AM EDT Mon May 27 2024 /241 AM CDT Mon May 27 2024/ .EARLY THIS MORNING...North winds 5 to 15 knots. Waves calm to 2 feet. .TODAY...West winds 5 to 15 knots becoming southwest 10 to 20 knots late. Patchy fog through early afternoon. Waves calm to 2 feet. .TONIGHT...West winds 10 to 20 knots veering northwest after midnight. A chance of showers. Waves calm to 2 feet. .TUESDAY...Northwest winds 10 to 20 knots backing west in the afternoon, then veering northwest late. A chance of showers. A slight chance of thunderstorms by mid afternoon. Waves calm to 2 feet. .TUESDAY NIGHT...North winds 5 to 15 knots. Waves calm to 2 feet. .WEDNESDAY...Northeast winds 5 to 15 knots veering south by mid afternoon. Waves calm to 2 feet. .WEDNESDAY NIGHT...East winds 5 to 15 knots backing northeast after midnight. Waves calm to 2 feet. .THURSDAY...East winds 5 to 15 knots increasing to 10 to 20 knots. Waves calm to 2 feet. .FRIDAY...East winds 10 to 20 knots veering south. A chance of showers. Waves calm to 2 feet. $$ LSZ263-271545- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 341 AM EDT Mon May 27 2024 .EARLY THIS MORNING...Northeast winds 5 to 15 knots. Waves calm to 2 feet. .TODAY...North winds 5 to 15 knots backing west in the afternoon. Patchy fog. Waves calm to 2 feet. .TONIGHT...West winds 5 to 15 knots veering northwest after midnight, then increasing to 10 to 20 knots late. A chance of showers after midnight. Waves calm to 2 feet. .TUESDAY...Northwest winds 5 to 15 knots increasing to 10 to 20 knots in the afternoon. A chance of showers. Waves calm to 2 feet. .TUESDAY NIGHT...North winds 5 to 15 knots. Waves calm to 2 feet. .WEDNESDAY...North winds 5 to 15 knots backing southwest by mid afternoon. Waves calm to 2 feet. .WEDNESDAY NIGHT...West winds 5 to 15 knots diminishing to less than 10 knots after midnight. Waves calm to 2 feet. .THURSDAY...East winds 5 to 15 knots veering south. Waves calm to 2 feet. .FRIDAY...South winds 5 to 15 knots. Waves calm to 2 feet. $$ LSZ264-271545- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 341 AM EDT Mon May 27 2024 .EARLY THIS MORNING...Northeast winds 5 to 15 knots. Patchy fog. Waves 1 to 3 feet. .TODAY...North winds 5 to 15 knots backing northwest in the afternoon, then becoming west 10 to 20 knots late. Isolated showers through early afternoon. Waves 1 to 3 feet. .TONIGHT...West winds 10 to 20 knots veering northwest after midnight. A slight chance of showers after midnight. Waves building to 2 to 4 feet. .TUESDAY...Northwest winds 10 to 20 knots veering north late. A slight chance of showers. Waves subsiding to 1 to 3 feet. .TUESDAY NIGHT...North winds 5 to 15 knots. Waves subsiding to calm to 2 feet. .WEDNESDAY...North winds 5 to 15 knots backing west by mid afternoon. Waves calm to 2 feet. .WEDNESDAY NIGHT...West winds 5 to 15 knots diminishing to less than 10 knots after midnight. Waves calm to 2 feet. .THURSDAY...South winds 5 to 15 knots. Waves calm to 2 feet. .FRIDAY...South winds 5 to 15 knots. Waves calm to 2 feet. $$ LSZ265-271545- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 341 AM EDT Mon May 27 2024 .EARLY THIS MORNING...Northeast winds 10 to 20 knots. Scattered showers. Waves 2 to 4 feet. .TODAY...North winds 10 to 20 knots backing northwest late. Scattered showers. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 1 to 3 feet. .TONIGHT...Northwest winds 15 to 25 knots. A slight chance of showers through midnight. Waves 1 to 3 feet. .TUESDAY...Northwest winds 15 to 25 knots. A chance of showers. Waves 1 to 3 feet. .TUESDAY NIGHT...North winds 10 to 20 knots. Waves 1 to 3 feet. .WEDNESDAY...North winds 10 to 20 knots backing northwest by mid afternoon. Waves subsiding to calm to 2 feet. .WEDNESDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet. .THURSDAY...East winds 5 to 15 knots veering south. Waves calm to 2 feet. .FRIDAY...Southeast winds 10 to 20 knots veering south. Waves calm to 2 feet. $$ LSZ266-271545- 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 AM EDT Mon May 27 2024 .EARLY THIS MORNING...Northeast winds 15 to 25 knots. Scattered showers. Waves 3 to 6 feet occasionally to 8 feet. .TODAY...Northeast winds 15 to 25 knots backing northwest late. Scattered showers. Waves subsiding to 2 to 4 feet. .TONIGHT...Northwest winds 20 to 30 knots diminishing to 15 to 25 knots late. A slight chance of showers through midnight. Waves building to 3 to 6 feet occasionally to 8 feet. .TUESDAY...Northwest winds 15 to 25 knots. A slight chance of showers. Waves subsiding to 2 to 4 feet. .TUESDAY NIGHT...North winds 10 to 20 knots. Waves subsiding to 1 to 3 feet. .WEDNESDAY...North winds 10 to 20 knots backing northwest by mid afternoon. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet. .WEDNESDAY NIGHT...Northwest winds 5 to 15 knots. Waves subsiding to calm to 2 feet. .THURSDAY...Northwest winds 5 to 15 knots backing south. Waves calm to 2 feet. .FRIDAY...South winds 10 to 20 knots. Waves calm to 2 feet. $$ LSZ267-271545- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 341 AM EDT Mon May 27 2024 .EARLY THIS MORNING...Northeast winds 15 to 25 knots. Scattered showers. Waves 3 to 6 feet occasionally to 8 feet. .TODAY...Northeast winds 15 to 25 knots backing northwest late. Showers through early afternoon, then scattered showers by mid afternoon. Waves subsiding to 2 to 4 feet. .TONIGHT...Northwest winds 20 to 30 knots diminishing to 15 to 25 knots late. A chance of showers. Waves building to 3 to 6 feet occasionally to 8 feet. .TUESDAY...Northwest winds 15 to 25 knots. Waves subsiding to 2 to 4 feet. .TUESDAY NIGHT...North winds 10 to 20 knots. Waves subsiding to 1 to 3 feet. .WEDNESDAY...North winds 10 to 20 knots backing northwest by mid afternoon. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet. .WEDNESDAY NIGHT...Northwest winds 10 to 20 knots becoming north 5 to 15 knots after midnight. Waves subsiding to calm to 2 feet. .THURSDAY...Northwest winds 5 to 15 knots backing south. Waves calm to 2 feet. .FRIDAY...Southeast winds 5 to 15 knots becoming south 10 to 20 knots. Waves calm to 2 feet. $$ LSZ261-271545- MAFOR 2709/ Superior West 11110 11800 12600 12610 12710. A chance of showers overnight. Waves 1 to 2 feet. Superior North Central 11110 12820 11720 12620 12720. Waves 1 to 4 feet. Superior South Central 12120 19126 11820 19826 14720 11720. Waves 2 to 5 feet. Superior East 11130 19136 11136 11820 19826 11820 14730. Waves 2 to 6 feet. $$ 07 Experimental modernized open lake forecast is available online at weather.gov/mqt/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes