Great Lakes Forecast
Issued by NWS
Issued by NWS
208 FZUS63 KMQT 021956 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 356 PM EDT Sun Jun 2 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 30.0 inch high pressure ridge maintains over much of Lake Superior into this evening. As this ridge shifts to Quebec and the Lower Great Lakes tonight, a 29.6 inch trough will sweep across the Northern Plains to Minnesota. On Monday, this trough will dissipate before reaching Lake Superior, leaving Lake Superior between 30.0 inch ridging over Quebec into the Lower Great Lakes and a new trough of 29.4 inches emerging over the western Dakotas. On Tuesday, 29.2 inch low pressure tracking across the Canadian Prairies will power the trough eastward to the Upper Mississippi Valley. The trough will then sail across Lake Superior Tuesday night and Wednesday morning while the parent low pressure tracks from the Canadian Prairies toward northern Ontario. On Thursday, the low, weakening to 29.3 inches, will slowly drift southeast across northern Ontario while a 30.0 inch high pressure ridge builds southeast into the Central Plains. The ridge looks to overtake much of the Mississippi River Valley by Friday evening while the low over northern Ontario weakens to 29.5 inches. LSZ162-030400- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 356 PM EDT Sun Jun 2 2024 /256 PM CDT Sun Jun 2 2024/ .LATE THIS AFTERNOON...East winds 5 to 15 knots. Waves calm to 2 feet. .TONIGHT...East winds 10 to 20 knots veering southeast after midnight. A chance of showers through midnight. A chance of thunderstorms. Showers likely after midnight. Waves building to 2 to 4 feet. .MONDAY...Southeast winds 10 to 20 knots backing east in the afternoon. Patchy fog. A chance of showers and thunderstorms. Waves subsiding to calm to 2 feet. .MONDAY NIGHT...East winds 5 to 15 knots backing northeast after midnight. Areas of fog. A slight chance of showers after midnight. Waves calm to 2 feet. .TUESDAY...East winds 5 to 15 knots becoming northeast 15 to 25 knots by mid afternoon. Patchy fog. A chance of showers. A chance of thunderstorms by mid afternoon. Waves building to 1 to 3 feet. .TUESDAY NIGHT...East winds 10 to 20 knots veering west after midnight. Showers through midnight. A chance of thunderstorms. A chance of showers after midnight. Waves subsiding to calm to 2 feet. .WEDNESDAY...Southwest winds 15 to 25 knots. A chance of showers. Waves building to 2 to 4 feet. .WEDNESDAY NIGHT...West winds 15 to 25 knots. A chance of showers. Waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. .THURSDAY...West winds 20 to 30 knots diminishing to 15 to 25 knots. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. .FRIDAY...West winds 15 to 25 knots becoming northwest 10 to 20 knots. Waves subsiding to calm to 2 feet. $$ LSZ263-030400- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 356 PM EDT Sun Jun 2 2024 .LATE THIS AFTERNOON...East winds 5 to 15 knots. Waves calm to 2 feet. .TONIGHT...East winds 10 to 20 knots veering south late. A chance of showers and a slight chance of thunderstorms after midnight. Waves building to 2 to 4 feet. .MONDAY...Southeast winds 10 to 20 knots diminishing to 5 to 15 knots late. Patchy fog. Showers likely through early afternoon. A slight chance of thunderstorms. A chance of showers by mid afternoon. Waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. .MONDAY NIGHT...Southeast winds 5 to 15 knots backing east after midnight. A slight chance of showers and thunderstorms through midnight. Areas of fog. Waves subsiding to calm to 2 feet. .TUESDAY...East winds 5 to 15 knots. Patchy fog. A chance of showers and a slight chance of thunderstorms by mid afternoon. Waves building to 1 to 3 feet. .TUESDAY NIGHT...Southeast winds 5 to 15 knots veering southwest after midnight. Showers and a chance of thunderstorms. Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. .WEDNESDAY...Southwest winds 10 to 20 knots. A chance of showers. Waves building to 2 to 4 feet. .WEDNESDAY NIGHT...West winds 5 to 15 knots increasing to 10 to 20 knots after midnight. Waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. .THURSDAY...West winds 15 to 25 knots diminishing to 10 to 20 knots. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. .FRIDAY...West winds 10 to 20 knots veering northwest. Waves subsiding to 1 to 3 feet. $$ LSZ264-030400- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 356 PM EDT Sun Jun 2 2024 .LATE THIS AFTERNOON...Southeast 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. A chance of showers after midnight. Waves building to 3 to 5 feet occasionally to 7 feet. .MONDAY...Southeast winds 10 to 20 knots. Patchy fog. Showers likely and a slight chance of thunderstorms. Waves subsiding to 2 to 4 feet. .MONDAY NIGHT...Southeast winds 5 to 15 knots. A slight chance of showers and thunderstorms through midnight. Patchy fog. Waves subsiding to calm to 2 feet. .TUESDAY...Southeast winds 5 to 15 knots increasing to 10 to 20 knots by mid afternoon. Patchy fog. A slight chance of showers and thunderstorms by mid afternoon. Waves building to 1 to 3 feet. .TUESDAY NIGHT...Southeast winds 10 to 20 knots veering south after midnight. Showers and a chance of thunderstorms. Waves building to 2 to 4 feet. .WEDNESDAY...Southwest winds 10 to 20 knots. A chance of showers. Waves 2 to 4 feet. .WEDNESDAY NIGHT...Southwest winds 5 to 15 knots becoming west 10 to 20 knots after midnight. Waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. .THURSDAY...West winds 15 to 25 knots diminishing to 10 to 20 knots. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. .FRIDAY...West winds 10 to 20 knots becoming northwest 5 to 15 knots. Waves subsiding to 1 to 3 feet. $$ LSZ265-030400- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 356 PM EDT Sun Jun 2 2024 .LATE THIS AFTERNOON...East winds 5 to 15 knots. Waves calm to 2 feet. .TONIGHT...Southeast winds 10 to 20 knots. A slight chance of showers after midnight. Waves building to 1 to 3 feet. .MONDAY...Southeast winds 10 to 20 knots. A chance of showers through early afternoon. A slight chance of thunderstorms. Showers likely by mid afternoon. Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. .MONDAY NIGHT...Southeast winds 10 to 20 knots diminishing to 5 to 15 knots after midnight. A slight chance of showers and thunderstorms through midnight. Waves subsiding to calm to 2 feet. .TUESDAY...Southeast winds 5 to 15 knots increasing to 15 to 25 knots by mid afternoon. A slight chance of showers and thunderstorms by mid afternoon. Waves calm to 2 feet. .TUESDAY NIGHT...Southeast winds 10 to 20 knots veering south after midnight. A chance of showers through midnight. A chance of thunderstorms. Showers likely after midnight. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet. .WEDNESDAY...Southwest winds 10 to 20 knots. A chance of showers. Waves calm to 2 feet. .WEDNESDAY NIGHT...Southwest winds 10 to 20 knots veering west after midnight. A chance of showers. Waves calm to 2 feet. .THURSDAY...West winds 15 to 25 knots. A chance of showers. Waves calm to 2 feet. .FRIDAY...West winds 15 to 25 knots. Waves calm to 2 feet. $$ LSZ266-030400- 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- 356 PM EDT Sun Jun 2 2024 .LATE THIS AFTERNOON...East winds 5 to 15 knots. Patchy fog. Waves calm to 2 feet. .TONIGHT...Southeast winds 5 to 15 knots becoming south 10 to 20 knots late. Patchy fog. Waves building to 2 to 4 feet. .MONDAY...Southeast winds 10 to 20 knots increasing to 15 to 25 knots in the afternoon, then diminishing to 10 to 20 knots late. A slight chance of showers through early afternoon, then showers likely and a slight chance of thunderstorms by mid afternoon. Waves 2 to 4 feet. .MONDAY NIGHT...Southeast winds 10 to 20 knots diminishing to 5 to 15 knots late. A slight chance of thunderstorms through midnight. A chance of showers. Waves subsiding to calm to 2 feet. .TUESDAY...Southeast winds 5 to 15 knots increasing to 10 to 20 knots by mid afternoon. A slight chance of showers and thunderstorms by mid afternoon. Waves building to 1 to 3 feet. .TUESDAY NIGHT...Southeast winds 15 to 25 knots diminishing to 10 to 20 knots after midnight. A chance of showers through midnight. Showers likely after midnight. Waves building to 2 to 4 feet. .WEDNESDAY...Southwest winds 10 to 20 knots. Showers likely through early afternoon. A chance of showers by mid afternoon. Waves subsiding to 1 to 3 feet. .WEDNESDAY NIGHT...South winds 10 to 20 knots veering west after midnight. A chance of showers. Waves 1 to 3 feet. .THURSDAY...West winds 15 to 25 knots. A chance of showers. Waves building to 2 to 4 feet. .FRIDAY...Northwest winds 15 to 25 knots diminishing to 10 to 20 knots. A chance of showers. Waves subsiding to 1 to 3 feet. $$ LSZ267-030400- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 356 PM EDT Sun Jun 2 2024 .LATE THIS AFTERNOON...North winds 5 to 15 knots. Patchy fog. Waves calm to 2 feet. .TONIGHT...Southeast winds 5 to 15 knots increasing to 10 to 20 knots late. Patchy fog. Waves calm to 2 feet. .MONDAY...Southeast winds 10 to 20 knots. A chance of showers by mid afternoon. Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. .MONDAY NIGHT...Southeast winds 10 to 20 knots. A chance of showers. Waves subsiding to calm to 2 feet. .TUESDAY...Southeast winds 10 to 20 knots. A slight chance of showers. Waves building to 1 to 3 feet. .TUESDAY NIGHT...Southeast winds 15 to 25 knots. A chance of showers through midnight. Showers likely after midnight. Waves building to 2 to 4 feet. .WEDNESDAY...South winds 10 to 20 knots veering southwest by mid afternoon. Showers. Waves subsiding to calm to 2 feet. .WEDNESDAY NIGHT...South winds 10 to 20 knots veering southwest after midnight. A chance of showers. Waves calm to 2 feet. .THURSDAY...West winds 10 to 20 knots. A chance of showers. Waves building to 2 to 4 feet. .FRIDAY...West winds 10 to 20 knots veering northwest. A chance of showers. Waves subsiding to 1 to 3 feet. $$ LSZ261-030400- MAFOR 0221/ Superior West 11210 11220 12320 11426 11316 11310 11300. A chance of thunderstorms Monday morning. Waves 1 to 4 feet. Superior North Central 12310 12320 11330 11320 12326. Waves 2 feet or less building to 2 to 5 feet tonight and Monday. Superior South Central 11210 19214 11310 19314 11310 11320 11420 12320 11326. Waves 1 to 3 feet. Superior East 11800 19804 11200 19204 13310 19314 11310 12320. A chance of showers Monday afternoon. Waves 2 feet or less tonight. Waves 2 to 4 feet Monday. $$ Jablonski Experimental modernized open lake forecast is available online at weather.gov/mqt/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes