####018011320#### FZUS63 KMQT 082007 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 407 PM EDT Mon Apr 8 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 29.7 inch low pressure centered over Duluth will track northeast this evening while weakening to 29.8 inches. The low continues northeast to Ontario tonight then deepens to 29.7 inches on Tuesday while maintaining a 29.8 inch trough across most of Lake Superior. A 29.8 inch trough over Southern Manitoba Wednesday morning settles southeast across Minnesota and Wisconsin Wednesday night. Meanwhile, a 29.5 inch low pressure over the lower Mississippi Valley Wednesday deepens to 29.2 inches while tracking northeast toward the Lower Great Lakes Thursday. Ridging at 30.0 inches builds and clips western Lake Superior Friday evening then shifts across Lake Superior Saturday. On Sunday, the ridge weakens to 29.9 inches over the Upper Great Lakes. LSZ162-090415- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 407 PM EDT Mon Apr 8 2024 /307 PM CDT Mon Apr 8 2024/ .LATE THIS AFTERNOON...East winds 5 to 15 knots. Rain showers likely. Waves 3 to 5 feet occasionally to 7 feet subsiding to 2 to 4 feet. .TONIGHT...Southwest winds 5 to 15 knots. A chance of rain showers. Waves subsiding to calm to 2 feet. .TUESDAY...Southwest winds 10 to 20 knots. A slight chance of rain showers through early afternoon. Waves building to 1 to 3 feet. .TUESDAY NIGHT...West winds 5 to 15 knots. Waves subsiding to calm to 2 feet. .WEDNESDAY...Southwest winds 10 to 20 knots backing southeast by mid afternoon. A slight chance of rain showers by mid afternoon. Waves calm to 2 feet. .WEDNESDAY NIGHT...East winds 5 to 15 knots becoming northeast 10 to 20 knots after midnight. A chance of rain showers. Waves calm to 2 feet. .THURSDAY...Northeast winds 10 to 20 knots becoming north 15 to 25 knots by mid afternoon. A chance of rain showers through early afternoon, then rain showers likely by mid afternoon. Waves building to 1 to 3 feet. .THURSDAY NIGHT...Northwest winds 15 to 25 knots. A chance of rain showers. Waves subsiding to calm to 2 feet, then building to 2 to 4 feet. .FRIDAY...Northwest winds 20 to 30 knots becoming west 15 to 25 knots. Waves subsiding to calm to 2 feet. .SATURDAY...West winds 10 to 20 knots veering northeast. Waves calm to 2 feet. $$ LSZ263-090415- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 407 PM EDT Mon Apr 8 2024 .LATE THIS AFTERNOON...East winds 10 to 20 knots. A chance of rain showers. Waves 3 to 6 feet occasionally to 8 feet. .TONIGHT...South winds 5 to 15 knots veering southwest after midnight. A chance of rain showers. Waves subsiding to 1 to 3 feet. .TUESDAY...Southwest winds 5 to 15 knots veering west late. A slight chance of rain showers through early afternoon. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet. .TUESDAY NIGHT...Southwest winds 5 to 15 knots veering west after midnight. Waves subsiding to calm to 2 feet. .WEDNESDAY...Southwest winds 5 to 15 knots backing south by mid afternoon. A slight chance of rain showers by mid afternoon. Waves calm to 2 feet. .WEDNESDAY NIGHT...Southeast winds 5 to 15 knots backing northeast after midnight. Waves calm to 2 feet. .THURSDAY...North winds 5 to 15 knots increasing to 10 to 20 knots by mid afternoon. A chance of rain showers. Waves calm to 2 feet. .THURSDAY NIGHT...North winds 10 to 20 knots becoming northwest 15 to 25 knots after midnight. A chance of rain showers. Waves building to 2 to 4 feet. .FRIDAY...Northwest winds 15 to 25 knots becoming west 10 to 20 knots. Waves subsiding to 1 to 3 feet. .SATURDAY...West winds 10 to 20 knots becoming east 5 to 15 knots. Waves subsiding to calm to 2 feet. $$ LSZ264-090415- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 407 PM EDT Mon Apr 8 2024 .LATE THIS AFTERNOON...Southeast winds 10 to 20 knots. A chance of rain showers. Waves 3 to 6 feet occasionally to 8 feet. .TONIGHT...South winds 5 to 15 knots. A chance of rain showers. Waves subsiding to 2 to 4 feet. .TUESDAY...South winds 5 to 15 knots veering southwest in the afternoon. A slight chance of rain showers through early afternoon. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet. .TUESDAY NIGHT...Southwest winds 5 to 15 knots veering west after midnight. Waves subsiding to calm to 2 feet. .WEDNESDAY...West winds 5 to 15 knots backing southwest by mid afternoon. Waves calm to 2 feet. .WEDNESDAY NIGHT...Southeast winds 5 to 15 knots. Waves calm to 2 feet. .THURSDAY...East winds 5 to 15 knots becoming northeast 10 to 20 knots by mid afternoon. A chance of rain showers. Waves calm to 2 feet. .THURSDAY NIGHT...North winds 10 to 20 knots increasing to 15 to 25 knots after midnight. A chance of rain showers. Waves building to 3 to 5 feet occasionally to 7 feet. .FRIDAY...Northwest winds 20 to 30 knots diminishing to 15 to 25 knots. Waves 3 to 6 feet occasionally to 8 feet, then subsiding to 2 to 4 feet. .SATURDAY...West winds 10 to 20 knots becoming east 5 to 15 knots. Waves subsiding to calm to 2 feet. $$ LSZ265-090415- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 407 PM EDT Mon Apr 8 2024 .LATE THIS AFTERNOON...Southeast winds 10 to 20 knots. A chance of rain showers. Waves 3 to 5 feet occasionally to 7 feet subsiding to 2 to 4 feet. .TONIGHT...South winds 10 to 20 knots diminishing to 5 to 15 knots late. A chance of rain showers. Waves subsiding to calm to 2 feet. .TUESDAY...South winds 5 to 15 knots veering west late. A chance of rain showers through early afternoon. Waves calm to 2 feet. .TUESDAY NIGHT...Southwest winds 5 to 15 knots increasing to 10 to 20 knots after midnight, then becoming west 5 to 15 knots late. Waves calm to 2 feet. .WEDNESDAY...West winds 5 to 15 knots becoming southeast 10 to 20 knots by mid afternoon. Waves calm to 2 feet. .WEDNESDAY NIGHT...Southeast winds 5 to 15 knots veering south after midnight. Waves calm to 2 feet. .THURSDAY...Southeast winds 5 to 15 knots becoming northeast 10 to 20 knots by mid afternoon. A chance of rain showers. Waves calm to 2 feet. .THURSDAY NIGHT...North winds 15 to 25 knots becoming northwest 20 to 30 knots after midnight. Rain showers likely. Waves building to 3 to 5 feet occasionally to 7 feet. .FRIDAY...Northwest gales to 35 knots diminishing to 20 to 30 knots. A chance of rain showers. Waves 3 to 6 feet occasionally to 8 feet, then subsiding to 2 to 4 feet. .SATURDAY...West winds 15 to 25 knots becoming south 10 to 20 knots. Waves subsiding to calm to 2 feet. $$ LSZ266-090415- 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- 407 PM EDT Mon Apr 8 2024 .LATE THIS AFTERNOON...Southeast winds 15 to 25 knots. A slight chance of rain showers. Waves 3 to 6 feet occasionally to 8 feet. .TONIGHT...South winds 10 to 20 knots diminishing to 5 to 15 knots late. A slight chance of rain showers. Waves subsiding to 1 to 3 feet. .TUESDAY...South winds 5 to 15 knots veering west late. A chance of rain showers. Waves subsiding to calm to 2 feet. .TUESDAY NIGHT...Southwest winds 5 to 15 knots increasing to 10 to 20 knots after midnight. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet. .WEDNESDAY...Southwest winds 5 to 15 knots backing southeast by mid afternoon. Waves calm to 2 feet. .WEDNESDAY NIGHT...Southeast winds 10 to 20 knots becoming south 5 to 15 knots after midnight. Waves calm to 2 feet. .THURSDAY...Southeast winds 5 to 15 knots becoming northeast 10 to 20 knots by mid afternoon. A chance of rain showers. Waves calm to 2 feet. .THURSDAY NIGHT...North winds 15 to 25 knots increasing to 20 to 30 knots after midnight. Rain showers likely. Waves building to 3 to 6 feet occasionally to 8 feet. .FRIDAY...Northwest gales to 35 knots. A chance of rain showers. Waves building to 6 to 9 feet occasionally to 11 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. .SATURDAY...West winds 15 to 25 knots becoming east 10 to 20 knots. Waves subsiding to calm to 2 feet. $$ LSZ267-090415- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 407 PM EDT Mon Apr 8 2024 .LATE THIS AFTERNOON...Southeast winds 15 to 25 knots. Waves 3 to 6 feet occasionally to 8 feet. .TONIGHT...Southeast winds 15 to 25 knots becoming south 10 to 20 knots after midnight. A chance of rain showers after midnight. Waves subsiding to 1 to 3 feet. .TUESDAY...South winds 5 to 15 knots backing southeast in the afternoon, then veering northwest late. A chance of rain showers. Waves subsiding to calm to 2 feet. .TUESDAY NIGHT...West winds 5 to 15 knots backing southwest after midnight, then increasing to 10 to 20 knots late. Waves calm to 2 feet. .WEDNESDAY...Southwest winds 10 to 20 knots becoming southeast 5 to 15 knots by mid afternoon. Waves calm to 2 feet. .WEDNESDAY NIGHT...Southeast winds 10 to 20 knots. Waves calm to 2 feet. .THURSDAY...Southeast winds 10 to 20 knots backing east by mid afternoon. A chance of rain showers. Waves calm to 2 feet. .THURSDAY NIGHT...North winds 15 to 25 knots increasing to gales to 35 knots after midnight. Rain showers likely. Waves building to 3 to 6 feet occasionally to 8 feet. .FRIDAY...Northwest gales to 35 knots. A chance of rain showers. Waves building to 6 to 9 feet occasionally to 11 feet, then subsiding to 4 to 7 feet occasionally to 9 feet. .SATURDAY...West winds 15 to 25 knots. Waves subsiding to calm to 2 feet. $$ LSZ261-090415- MAFOR 0821/ Superior West 11226 11410 15510. Waves 3 to 5 feet subsiding to 2 to 4 feet tonight and Tuesday. Superior North Central 11330 11310 12410 12400 12510. A chance of rain showers tonight and Tuesday morning. Waves 3 to 6 feet subsiding to 1 to 4 feet tonight and Tuesday. Superior South Central 11320 13410 13400 11600. A chance of rain showers Tuesday morning. Waves 1 to 4 feet tonight. Waves 2 feet or less Tuesday. Superior East 11340 11330 11420 13410 11400 11500. A chance of rain showers Tuesday. Waves 3 to 6 feet subsiding to 1 to 4 feet tonight. Waves subsiding to 1 foot or less Tuesday. $$ JSS Experimental modernized open lake forecast is available online at weather.gov/mqt/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes ####018003445#### FZUS61 KBUF 082008 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 408 PM EDT Mon Apr 8 2024 For waters beyond five nautical miles of shore on Lake Ontario 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 30.2 inch ridge axis will drift across New England through Tuesday. A weakening 29.8 inch trough will then wash out as it approaches the lower Great Lakes from the west on Wednesday. Another 29.6 inch low over the Deep South will track northeastward to near Lake Erie and deepen to 29.1 inches by later Thursday. This low will begin to fill Thursday night, while pushing a cold front across the Lake. A secondary cold front will pass across the Lake Friday night. LOZ062-090300- Lake Ontario open waters from the Niagara River to Hamlin Beach- 408 PM EDT Mon Apr 8 2024 .TONIGHT...East winds 5 to 10 knots becoming light and variable. Waves 2 feet or less. .TUESDAY...South winds 10 knots or less becoming east 10 to 15 knots. A chance of showers late. Waves 2 feet or less. .TUESDAY NIGHT...East winds 5 to 15 knots becoming southwest. Showers likely. Waves 1 to 2 feet. .WEDNESDAY...Southwest winds 5 to 10 knots. A chance of showers. Waves 1 to 2 feet. .WEDNESDAY NIGHT...Southwest winds 5 to 10 knots becoming east. A chance of showers in the evening, then showers likely overnight. Waves 1 foot or less. .THURSDAY...East winds 15 to 20 knots becoming south. Showers. Waves 1 to 3 feet building to 2 to 4 feet. .FRIDAY...Southwest winds 15 to 25 knots becoming west to 30 knots. Showers likely. Waves 3 to 6 feet building to 6 to 9 feet. Waves occasionally around 11 feet. .SATURDAY...West winds 15 to 25 knots. A chance of showers during the day. Waves 5 to 8 feet subsiding to 3 to 6 feet. Waves occasionally around 10 feet. $$ LOZ063>065-090300- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 408 PM EDT Mon Apr 8 2024 .TONIGHT...East winds 10 knots or less becoming south. Waves 2 feet or less. .TUESDAY...South winds 5 to 15 knots becoming east. Waves 2 feet or less. .TUESDAY NIGHT...East winds 10 to 15 knots becoming south. Showers likely. Waves 2 feet or less. .WEDNESDAY...South winds 10 to 15 knots becoming southwest. Showers likely in the morning, then a chance of showers in the afternoon. Waves 1 to 2 feet. .WEDNESDAY NIGHT...Southwest winds 5 to 15 knots becoming east. A chance of showers in the evening, then showers likely overnight. Waves 2 feet or less. .THURSDAY...East winds 15 to 25 knots becoming south. Showers. Waves 1 to 3 feet building to 3 to 6 feet. .FRIDAY...Southwest winds to 30 knots becoming west. Showers. Waves 3 to 6 feet building to 6 to 10 feet. Waves occasionally around 13 feet. .SATURDAY...West winds to 30 knots diminishing to 15 to 25 knots. Showers likely during the day, then a chance of showers Saturday night. Waves 8 to 11 feet subsiding to 4 to 7 feet. Waves occasionally around 14 feet. $$ LOZ061-090300- MAFOR 0821/ ONTARIO WEST 1/2 12200 11300 11500 11400 11300 11200 11210. Waves 2 feet or less. ONTARIO EAST 1/2 11110 11200 11300 13400 11300 11210. Waves 2 feet or less. $$