####018011187#### FZUS63 KMQT 120739 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 339 AM EDT Fri Apr 12 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 considerable pressure gradient is forecast across Lake Superior today as a 29.1 inch low skims the lake on its track to Ontario. By this evening, ridging at 30.0 inches builds across western Lake Superior then shifts east across the entire lake Saturday. Ridging shifts east Saturday night as a broad 29.7 inch low pressure moves across the Upper Midwest. This low pressure brushes the Great Lakes Sunday, centering over Lake Michigan early Sunday morning before being absorbed by deeper low pressure east of James Bay. A 30.0 inch ridge extending from northwest Ontario follows in its wake Sunday afternoon into Monday, building to 30.2 inches Tuesday morning. During Tuesday, deep low pressure of 29.2 inches will lift northeast through the central Plains. LSZ162-121545- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 339 AM EDT Fri Apr 12 2024 /239 AM CDT Fri Apr 12 2024/ .EARLY THIS MORNING...Northwest winds 15 to 25 knots. A slight chance of rain showers. Waves 2 to 4 feet. .TODAY...Northwest winds 15 to 25 knots. A slight chance of rain showers through early afternoon. Waves subsiding to 1 to 3 feet. .TONIGHT...Northwest winds 10 to 20 knots becoming west 5 to 15 knots late. Waves subsiding to calm to 2 feet. .SATURDAY...West winds 5 to 15 knots backing south in the afternoon, then backing east late. A slight chance of rain showers by mid afternoon. Waves building to 1 to 3 feet. .SATURDAY NIGHT...Northeast winds 10 to 20 knots. A chance of rain showers. Waves building to 2 to 4 feet, then subsiding to calm to 2 feet. .SUNDAY...West winds 10 to 20 knots backing southwest by mid afternoon. Waves calm to 2 feet. .SUNDAY NIGHT...West winds 5 to 15 knots becoming northwest 10 to 20 knots after midnight. Waves calm to 2 feet. .MONDAY...East winds 10 to 20 knots increasing to 20 to 30 knots. A chance of rain showers. Waves building to 3 to 6 feet occasionally to 8 feet. .TUESDAY...Northeast gales to 35 knots. Rain showers. Waves building to 6 to 9 feet occasionally to 11 feet, then subsiding to 4 to 7 feet occasionally to 9 feet. $$ LSZ263-121545- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 339 AM EDT Fri Apr 12 2024 .EARLY THIS MORNING...North winds 15 to 25 knots. A slight chance of rain showers. Waves 2 to 4 feet building to 3 to 5 feet occasionally to 7 feet. .TODAY...North winds 20 to 30 knots becoming northwest 15 to 25 knots in the afternoon, then diminishing to 10 to 20 knots late. A slight chance of rain showers through early afternoon. Waves subsiding to 2 to 4 feet. .TONIGHT...Northwest winds 10 to 20 knots. Waves subsiding to 1 to 3 feet. .SATURDAY...West winds 5 to 15 knots backing southwest in the afternoon, then backing east late. A slight chance of rain showers by mid afternoon. Waves subsiding to calm to 2 feet. .SATURDAY NIGHT...East winds 5 to 15 knots backing northeast after midnight. A chance of rain showers. Waves calm to 2 feet. .SUNDAY...North winds 5 to 15 knots backing southwest by mid afternoon. Waves calm to 2 feet. .SUNDAY NIGHT...Southwest winds 5 to 15 knots veering west after midnight. Waves calm to 2 feet. .MONDAY...East winds 5 to 15 knots increasing to 15 to 25 knots. A chance of rain showers. Waves building to 3 to 5 feet occasionally to 7 feet. .TUESDAY...East gales to 35 knots. A chance of rain showers, then rain showers. Waves building to 7 to 10 feet occasionally to 13 feet. $$ LSZ264-121545- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 339 AM EDT Fri Apr 12 2024 ...GALE WARNING IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THIS AFTERNOON... .EARLY THIS MORNING...North winds 20 to 30 knots. A slight chance of rain showers. Waves 3 to 5 feet occasionally to 7 feet building to 4 to 7 feet occasionally to 9 feet. .TODAY...North winds 20 to 30 knots becoming northwest gales to 35 knots in the afternoon, then diminishing to 20 to 30 knots late. Waves building to 6 to 9 feet occasionally to 11 feet, then subsiding to 4 to 7 feet occasionally to 9 feet. .TONIGHT...Northwest winds 20 to 30 knots. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .SATURDAY...Northwest winds 10 to 20 knots becoming west 5 to 15 knots in the afternoon, then backing southwest late. A chance of rain showers by mid afternoon. Waves subsiding to calm to 2 feet. .SATURDAY NIGHT...East winds 5 to 15 knots. A chance of rain showers. Waves calm to 2 feet. .SUNDAY...North winds 5 to 15 knots backing west by mid afternoon. Waves calm to 2 feet. .SUNDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet. .MONDAY...West winds 5 to 15 knots becoming east 10 to 20 knots. Waves building to 2 to 4 feet. .TUESDAY...East gales to 35 knots. A chance of rain showers, then rain showers. Waves building to 7 to 10 feet occasionally to 13 feet. $$ LSZ265-121545- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 339 AM EDT Fri Apr 12 2024 ...GALE WARNING IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THIS EVENING... .EARLY THIS MORNING...North winds 20 to 30 knots. A chance of rain showers. Waves 3 to 5 feet occasionally to 7 feet building to 5 to 8 feet occasionally to 10 feet. .TODAY...North gales to 35 knots backing northwest in the afternoon. A slight chance of rain showers through early afternoon. Waves building to 7 to 10 feet occasionally to 13 feet, then subsiding to 4 to 7 feet occasionally to 9 feet. .TONIGHT...Northwest winds 20 to 30 knots. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .SATURDAY...Northwest winds 10 to 20 knots becoming west 5 to 15 knots in the afternoon, then backing east late. A slight chance of rain showers by mid afternoon. Waves subsiding to calm to 2 feet. .SATURDAY NIGHT...East winds 5 to 15 knots. A chance of rain showers. Waves calm to 2 feet. .SUNDAY...North winds 5 to 15 knots backing northwest by mid afternoon. Waves calm to 2 feet. .SUNDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet. .MONDAY...East winds 5 to 15 knots increasing to 10 to 20 knots. A chance of rain showers. Waves building to 2 to 4 feet. .TUESDAY...East gales to 35 knots. Rain showers. Waves building to 6 to 9 feet occasionally to 11 feet, then subsiding to 4 to 7 feet occasionally to 9 feet. $$ LSZ266-121545- 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- 339 AM EDT Fri Apr 12 2024 ...GALE WARNING IN EFFECT THROUGH LATE TONIGHT... .EARLY THIS MORNING...North gales to 35 knots. A chance of rain showers. Waves 3 to 6 feet occasionally to 8 feet building to 6 to 9 feet occasionally to 11 feet. .TODAY...North gales to 40 knots becoming northwest gales to 45 knots in the afternoon. A chance of rain showers through early afternoon. Waves building to 10 to 14 feet occasionally to 18 feet. .TONIGHT...Northwest gales to 40 knots. Waves subsiding to 6 to 9 feet occasionally to 11 feet. .SATURDAY...Northwest winds 20 to 30 knots diminishing to 10 to 20 knots in the afternoon, then becoming west 5 to 15 knots late. A slight chance of rain showers by mid afternoon. Waves subsiding to 1 to 3 feet. .SATURDAY NIGHT...East winds 5 to 15 knots. A chance of rain showers. Waves subsiding to calm to 2 feet. .SUNDAY...North winds 5 to 15 knots backing northwest by mid afternoon. Waves calm to 2 feet. .SUNDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet. .MONDAY...West winds 5 to 15 knots becoming east 10 to 20 knots. Waves building to 2 to 4 feet. .TUESDAY...East gales to 35 knots. A chance of rain showers, then rain showers. Waves building to 6 to 10 feet occasionally to 13 feet. $$ LSZ267-121545- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 339 AM EDT Fri Apr 12 2024 ...GALE WARNING IN EFFECT THROUGH SATURDAY MORNING... .EARLY THIS MORNING...North winds 20 to 30 knots. Rain showers likely. Waves 3 to 5 feet occasionally to 7 feet building to 4 to 7 feet occasionally to 9 feet. .TODAY...North gales to 40 knots becoming northwest gales to 45 knots in the afternoon. Rain showers likely through early afternoon, then a slight chance of rain showers by mid afternoon. Waves building to 10 to 14 feet occasionally to 18 feet. .TONIGHT...Northwest gales to 45 knots. Waves subsiding to 7 to 10 feet occasionally to 13 feet. .SATURDAY...Northwest gales to 35 knots diminishing to 20 to 30 knots in the afternoon, then becoming west 10 to 20 knots late. A slight chance of rain showers by mid afternoon. Waves subsiding to 2 to 4 feet. .SATURDAY NIGHT...Southeast winds 5 to 15 knots becoming east 10 to 20 knots after midnight. A chance of rain showers. Waves subsiding to calm to 2 feet. .SUNDAY...Northeast winds 10 to 20 knots backing northwest by mid afternoon. Waves building to 1 to 3 feet. .SUNDAY NIGHT...West winds 10 to 20 knots. Waves subsiding to calm to 2 feet. .MONDAY...West winds 10 to 20 knots backing east. Waves building to 1 to 3 feet. .TUESDAY...East winds 20 to 30 knots becoming southeast gales to 35 knots. A chance of rain showers, then rain showers. Waves building to 4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. $$ LSZ261-121545- MAFOR 1209/ Superior West 12730 14720 12710. Waves 2 to 4 feet today. Waves 1 to 3 feet tonight. Superior North Central...GALE WARNING IN EFFECT...11840 11850 12750 14740. A chance of rain showers early this morning. Waves 3 to 5 feet building to 5 to 9 feet today. Waves 4 to 7 feet subsiding to 3 to 6 feet tonight. Superior South Central...GALE WARNING IN EFFECT...12850 15750. A chance of rain showers today. Waves 3 to 6 feet building to 7 to 11 feet today, then subsiding to 5 to 8 feet tonight. Superior East...GALE WARNING IN EFFECT...11846 11856 11750 11760 14750. Waves 3 to 5 feet building to 8 to 12 feet today, then subsiding to 7 to 10 feet tonight. $$ WFO MQT Experimental modernized open lake forecast is available online at weather.gov/mqt/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes