####018010441#### FZUS63 KMQT 111409 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 1009 AM EDT Thu Apr 11 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 pressure currently over the Tennessee Valley deepens to 29.2 inches while tracking northeast toward Lake Erie by late this evening. A considerable pressure gradient is forecast across Lake Superior tonight and Friday as the low pressure makes its closest approach. By Friday 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 lower Great Lakes Sunday before brief 29.9 inch high pressure returns to the region Monday. LSZ162-112215- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 1009 AM EDT Thu Apr 11 2024 /909 AM CDT Thu Apr 11 2024/ .REST OF TODAY...North winds 5 to 15 knots backing west in the afternoon, then veering northwest late. A chance of rain showers. Waves calm to 2 feet. .TONIGHT...North winds 10 to 20 knots increasing to 15 to 25 knots after midnight. A chance of rain showers through midnight. Waves building to 2 to 4 feet. .FRIDAY...Northwest winds 15 to 25 knots. Waves 2 to 4 feet. .FRIDAY NIGHT...Northwest winds 10 to 20 knots diminishing to 5 to 15 knots after midnight. Waves subsiding to calm to 2 feet. .SATURDAY...West winds 5 to 15 knots becoming east 10 to 20 knots by mid afternoon. Waves building to 2 to 4 feet. .SATURDAY NIGHT...Northeast winds 10 to 20 knots diminishing to 5 to 15 knots after midnight. A chance of rain showers. Waves subsiding to calm to 2 feet. .SUNDAY...Northeast winds 5 to 15 knots increasing to 10 to 20 knots. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet. .MONDAY...East winds 15 to 25 knots increasing to 20 to 30 knots. A chance of rain showers. Waves building to 3 to 5 feet occasionally to 7 feet. $$ LSZ263-112215- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 1009 AM EDT Thu Apr 11 2024 .REST OF TODAY...North winds 10 to 20 knots. A chance of rain showers. Waves calm to 2 feet. .TONIGHT...North winds 10 to 20 knots increasing to 30 knots with a few gale force gusts to 35 knots possible. A chance of rain showers. Waves building to 3 to 6 feet occasionally to 8 feet. .FRIDAY...North winds to 30 knots with a few gale force gusts to 35 knots possible becoming northwest 20 to 30 knots in the afternoon, then diminishing to 15 to 25 knots late. Waves subsiding to 2 to 4 feet. .FRIDAY NIGHT...Northwest winds 15 to 25 knots diminishing to 10 to 20 knots after midnight. Waves subsiding to calm to 2 feet. .SATURDAY...West winds 5 to 15 knots backing southwest by mid afternoon. Waves calm to 2 feet. .SATURDAY NIGHT...East winds 5 to 15 knots. A chance of rain showers. Waves calm to 2 feet. .SUNDAY...Northeast winds 5 to 15 knots veering east. Waves calm to 2 feet. .MONDAY...East winds 10 to 20 knots increasing to 15 to 25 knots. A chance of rain showers. Waves building to 2 to 4 feet. $$ LSZ264-112215- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 1009 AM EDT Thu Apr 11 2024 ...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY AFTERNOON... .REST OF TODAY...Northeast winds 5 to 15 knots. A chance of rain showers. Waves calm to 2 feet. .TONIGHT...North winds 10 to 20 knots increasing to gales to 35 knots. A chance of rain showers. Waves building to 6 to 9 feet occasionally to 11 feet. .FRIDAY...North gales to 35 knots backing northwest late. Waves building to 7 to 10 feet occasionally to 13 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. .FRIDAY NIGHT...Northwest winds 20 to 30 knots. Waves subsiding to 2 to 4 feet. .SATURDAY...Northwest winds 15 to 25 knots becoming southwest 5 to 15 knots by mid afternoon. Waves subsiding to calm to 2 feet. .SATURDAY NIGHT...Southeast winds 5 to 15 knots backing east after midnight. A chance of rain showers. Waves calm to 2 feet. .SUNDAY...Northeast winds 5 to 15 knots backing west. Waves calm to 2 feet. .MONDAY...Southeast winds 10 to 20 knots becoming east 20 to 30 knots. A chance of rain showers. Waves building to 2 to 4 feet. $$ LSZ265-112215- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 1009 AM EDT Thu Apr 11 2024 ...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY EVENING... .REST OF TODAY...Southeast winds 5 to 15 knots backing northeast in the afternoon. A chance of rain showers. Waves calm to 2 feet. .TONIGHT...North winds 10 to 20 knots increasing to gales to 35 knots. A chance of rain showers. Waves building to 7 to 10 feet occasionally to 13 feet. .FRIDAY...North gales to 40 knots backing northwest in the afternoon. A slight chance of rain showers through early afternoon. Waves building to 9 to 12 feet occasionally to 15 feet, then subsiding to 5 to 8 feet occasionally to 10 feet. .FRIDAY NIGHT...Northwest winds 20 to 30 knots. Waves subsiding to 2 to 4 feet. .SATURDAY...Northwest winds 10 to 20 knots veering northeast by mid afternoon. Waves subsiding to calm to 2 feet. .SATURDAY NIGHT...Southeast winds 10 to 20 knots backing east after midnight. A chance of rain showers. Waves calm to 2 feet. .SUNDAY...North winds 10 to 20 knots becoming west 5 to 15 knots. Waves calm to 2 feet. .MONDAY...East winds 10 to 20 knots becoming southeast 20 to 30 knots. A chance of rain showers. Waves building to 2 to 4 feet. $$ LSZ266-112215- 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- 1009 AM EDT Thu Apr 11 2024 ...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH LATE FRIDAY NIGHT... .REST OF TODAY...Southeast winds 5 to 15 knots backing east in the afternoon, then backing northeast late. A slight chance of rain showers. Waves calm to 2 feet. .TONIGHT...North winds 10 to 20 knots increasing to gales to 40 knots. A chance of rain showers through midnight, then rain showers likely after midnight. Waves building to 10 to 14 feet occasionally to 18 feet. .FRIDAY...North gales to 45 knots backing northwest in the afternoon. A chance of rain showers, possibly mixed with snow through early afternoon. Waves building to 11 to 15 feet occasionally to 19 feet, then subsiding to 10 to 14 feet occasionally to 18 feet. .FRIDAY NIGHT...Northwest gales to 40 knots. Waves subsiding to 5 to 8 feet occasionally to 10 feet. .SATURDAY...Northwest winds 20 to 30 knots becoming west 10 to 20 knots by mid afternoon. Waves subsiding to 1 to 3 feet. .SATURDAY NIGHT...Southeast winds 5 to 15 knots increasing to 10 to 20 knots after midnight. A chance of rain showers. Waves subsiding to calm to 2 feet. .SUNDAY...North winds 10 to 20 knots becoming west 5 to 15 knots. Waves calm to 2 feet. .MONDAY...South winds 10 to 20 knots becoming southeast 15 to 25 knots. A chance of rain showers. Waves building to 2 to 4 feet. $$ LSZ267-112215- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 1009 AM EDT Thu Apr 11 2024 ...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY MORNING... .REST OF TODAY...Southeast winds 5 to 15 knots backing east in the afternoon. A chance of rain showers by mid afternoon. Waves calm to 2 feet. .TONIGHT...North winds 10 to 20 knots increasing to gales to 45 knots. Rain showers. Waves building to 9 to 12 feet occasionally to 15 feet. .FRIDAY...North gales to 45 knots with a few storm force gusts to 50 knots possible backing northwest in the afternoon. A chance of rain showers. A slight chance of snow showers by mid afternoon. Waves building to 11 to 15 feet occasionally to 19 feet, then subsiding to 10 to 14 feet occasionally to 18 feet. .FRIDAY NIGHT...Northwest gales to 45 knots. Waves subsiding to 5 to 8 feet occasionally to 10 feet. .SATURDAY...Northwest gales to 35 knots becoming west 15 to 25 knots by mid afternoon. Waves subsiding to 2 to 4 feet. .SATURDAY NIGHT...West winds 5 to 15 knots becoming southeast 10 to 20 knots after midnight. A chance of rain showers. Waves subsiding to calm to 2 feet. .SUNDAY...East winds 10 to 20 knots backing northwest. Waves calm to 2 feet. .MONDAY...East winds 5 to 15 knots becoming southeast 15 to 25 knots. A chance of rain showers. Waves building to 1 to 3 feet. $$ LSZ261-112215- MAFOR 1115/ Superior West 11810 12710 11820 11730 11830 11840 11730. A chance of rain showers this afternoon and evening. Waves around 1 foot this afternoon. Waves 1 to 4 feet tonight. Waves 3 to 5 feet Friday morning. Superior North Central...GALE WARNING IN EFFECT...13110 11810 11830 11840 12850. A chance of rain showers this afternoon and tonight. Waves 2 feet or less this afternoon. Waves 1 to 2 feet building to 4 to 6 feet tonight. Waves 6 to 10 feet Friday morning. Superior South Central...GALE WARNING IN EFFECT...11300 12100 11820 11736 11846 11856 11860. Waves 1 foot or less this afternoon building to 4 to 7 feet tonight. Waves 8 to 11 feet building to 10 to 13 feet Friday morning. Superior East...GALE WARNING IN EFFECT...11310 12210 11826 11836 11846 11856 11860. Waves 1 to 2 feet this afternoon building to 3 to 6 feet tonight. Waves 7 to 10 feet building to 10 to 13 feet Friday morning. $$ Jablonski Experimental modernized open lake forecast is available online at weather.gov/mqt/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes