876 FZUS63 KMQT 180810 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 410 AM EDT Mon Mar 18 2019 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 30.4 inch high pressure will be over the Central Plains through this evening. A weak low pressure trough of 30.2 inches will move through the Upper Great Lakes today. On Tuesday, a dissipating 30.1 inch low pressure will shift eastward through the Central Plains while a 29.6 inch low moves southeastward through northern Ontario. A 29.9 inch trough extending south from northern Ontario into the Upper Great Lakes on Wednesday will be replaced by a 30.2 inch ridge by Friday. LSZ162-181615- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 410 AM EDT Mon Mar 18 2019 /310 AM CDT Mon Mar 18 2019/ .EARLY THIS MORNING...West winds 5 to 15 knots. Waves calm to 2 feet. .TODAY...West winds 5 to 15 knots becoming southwest 10 to 20 knots in the afternoon. Waves building to 2 to 4 feet. .TONIGHT...Southwest winds 5 to 15 knots. Waves subsiding to calm to 2 feet. .TUESDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet. .TUESDAY NIGHT...West winds 10 to 20 knots increasing to 15 to 25 knots after midnight. A slight chance of rain and snow showers. Waves building to 2 to 4 feet. .WEDNESDAY...West winds 15 to 25 knots diminishing to 5 to 15 knots by mid afternoon. Waves subsiding to calm to 2 feet. .WEDNESDAY NIGHT...Northwest winds 5 to 15 knots backing west after midnight. Waves calm to 2 feet. .THURSDAY...West winds 5 to 15 knots veering northwest. Waves calm to 2 feet. .FRIDAY...West winds less than 10 knots backing south. Waves calm to 2 feet. Note, wave height forecasts are for ice free areas. $$ LSZ263-181615- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 410 AM EDT Mon Mar 18 2019 .EARLY THIS MORNING...West winds 5 to 15 knots. A slight chance of snow showers. Waves calm to 2 feet. .TODAY...West winds 5 to 15 knots backing southwest late. Waves building to 1 to 3 feet. .TONIGHT...Southwest winds 5 to 15 knots. Waves subsiding to calm to 2 feet. .TUESDAY...Southwest winds 5 to 15 knots increasing to 10 to 20 knots late. Waves calm to 2 feet. .TUESDAY NIGHT...Southwest winds 10 to 20 knots becoming west 15 to 25 knots after midnight. A chance of snow showers, possibly mixed with rain. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet. .WEDNESDAY...West winds 15 to 25 knots diminishing to 5 to 15 knots by mid afternoon. Waves subsiding to calm to 2 feet. .WEDNESDAY NIGHT...Northwest winds 5 to 15 knots backing west after midnight. Waves calm to 2 feet. .THURSDAY...West winds 5 to 15 knots veering northwest. Waves calm to 2 feet. .FRIDAY...West winds 5 to 15 knots backing south. Waves calm to 2 feet. Note, wave height forecasts are for ice free areas. $$ LSZ264-181615- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 410 AM EDT Mon Mar 18 2019 .EARLY THIS MORNING...West winds 5 to 15 knots. A slight chance of snow showers. Waves calm to 2 feet. .TODAY...Northwest winds 5 to 15 knots backing west in the afternoon. A slight chance of snow showers through early afternoon. Waves calm to 2 feet. .TONIGHT...Southwest winds 5 to 15 knots diminishing to less than 10 knots after midnight. Waves calm to 2 feet. .TUESDAY...Southwest winds 5 to 15 knots increasing to 10 to 20 knots in the afternoon. Waves calm to 2 feet. .TUESDAY NIGHT...Southwest winds 10 to 20 knots becoming west 20 to 30 knots after midnight. A chance of snow showers. Waves building to 2 to 4 feet. .WEDNESDAY...West winds 15 to 25 knots becoming northwest 10 to 20 knots by mid afternoon. Waves subsiding to calm to 2 feet. .WEDNESDAY NIGHT...Northwest winds 10 to 20 knots backing west after midnight. Waves calm to 2 feet. .THURSDAY...West winds 10 to 20 knots veering northwest. Waves calm to 2 feet. .FRIDAY...Northwest winds 5 to 15 knots backing south. Waves calm to 2 feet. Note, wave height forecasts are for ice free areas. $$ LSZ265-181615- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 410 AM EDT Mon Mar 18 2019 .EARLY THIS MORNING...Southwest winds 10 to 20 knots. A slight chance of snow showers. Waves calm to 2 feet. .TODAY...West winds 10 to 20 knots diminishing to 5 to 15 knots late. A slight chance of snow showers through early afternoon. Waves calm to 2 feet. .TONIGHT...West winds 5 to 15 knots. Waves calm to 2 feet. .TUESDAY...Southwest winds 5 to 15 knots backing south in the afternoon. Waves calm to 2 feet. .TUESDAY NIGHT...Southwest winds 10 to 20 knots becoming west 15 to 25 knots after midnight. A chance of snow showers, possibly mixed with rain. Waves building to 1 to 3 feet. .WEDNESDAY...West winds 15 to 25 knots diminishing to 10 to 20 knots by mid afternoon. A chance of rain and snow showers. Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. .WEDNESDAY NIGHT...Northwest winds 10 to 20 knots backing west after midnight. Waves subsiding to calm to 2 feet. .THURSDAY...West winds 10 to 20 knots veering northwest. Waves building to 1 to 3 feet. .FRIDAY...Northwest winds 5 to 15 knots backing south. Waves subsiding to calm to 2 feet. Note, wave height forecasts are for ice free areas. $$ LSZ266-181615- 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- 410 AM EDT Mon Mar 18 2019 .EARLY THIS MORNING...Southwest winds 5 to 15 knots. A slight chance of snow showers. Waves calm to 2 feet. .TODAY...West winds 10 to 20 knots diminishing to 5 to 15 knots late. A slight chance of snow showers through early afternoon. Waves calm to 2 feet. .TONIGHT...West winds less than 10 knots backing southwest after midnight, then increasing to 5 to 15 knots late. Waves calm to 2 feet. .TUESDAY...South winds 5 to 15 knots increasing to 10 to 20 knots in the afternoon. Waves calm to 2 feet. .TUESDAY NIGHT...Southwest winds 10 to 20 knots becoming west 15 to 25 knots after midnight. A chance of snow showers, possibly mixed with rain. Waves building to 2 to 4 feet. .WEDNESDAY...West winds 15 to 25 knots veering northwest by mid afternoon. A chance of snow showers, possibly mixed with rain. Waves 2 to 4 feet. .WEDNESDAY NIGHT...Northwest winds 10 to 20 knots. Waves subsiding to calm to 2 feet. .THURSDAY...West winds 10 to 20 knots becoming northwest 15 to 25 knots. A chance of snow showers, possibly mixed with rain. Waves building to 1 to 3 feet. .FRIDAY...Northwest winds 10 to 20 knots becoming south 5 to 15 knots. Waves subsiding to calm to 2 feet. Note, wave height forecasts are for ice free areas. $$ LSZ267-181615- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 410 AM EDT Mon Mar 18 2019 .EARLY THIS MORNING...West winds less than 10 knots. A slight chance of snow showers. Waves calm to 2 feet. .TODAY...South winds 5 to 15 knots veering west in the afternoon. A chance of snow showers. Waves calm to 2 feet. .TONIGHT...West winds 5 to 15 knots becoming southwest less than 10 knots after midnight, then backing south late. Waves calm to 2 feet. .TUESDAY...South winds 5 to 15 knots increasing to 10 to 20 knots in the afternoon. Waves calm to 2 feet. .TUESDAY NIGHT...South winds 15 to 25 knots veering southwest after midnight. A slight chance of snow showers through midnight, then snow showers likely after midnight. Waves calm to 2 feet. .WEDNESDAY...West winds 15 to 25 knots diminishing to 10 to 20 knots by mid afternoon. Snow showers likely through early afternoon, then a chance of snow showers by mid afternoon. Waves calm to 2 feet. .WEDNESDAY NIGHT...Northwest winds 10 to 20 knots. Waves calm to 2 feet. .THURSDAY...West winds 10 to 20 knots veering northwest. Snow showers likely. Waves calm to 2 feet. .FRIDAY...Northwest winds 10 to 20 knots becoming east 5 to 15 knots. Waves calm to 2 feet. Note, wave height forecasts are for ice free areas. $$ LSZ261-181615- MAFOR 1809/ Superior West 12610 11620 13520 11510 11500. Waves 1 to 3 feet today. Waves 2 to 4 feet subsiding to 1 to 3 feet tonight. Wave heights are for ice free areas. Superior North Central 11510 11610 11710 11610 11510 13500. Waves 2 feet or less. Wave heights are for ice free areas. Superior South Central 11510 13620 11610 11600 11500 11600. Waves 2 feet or less. Wave heights are for ice free areas. Superior East 11500 12400 11610 12600 12500. A chance of snow showers this morning. Waves omitted due to the lake being mostly ice covered. $$ Voss Experimental modernized open lake forecast is available online at weather.gov/mqt/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes