####018011598#### FZUS63 KMQT 131951 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 351 PM EDT Sat Apr 13 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 29.9 inch high pressure ridge extending from Hudson Bay southward across the Upper Great Lakes will weaken to 29.8 inches as it shifts to the Lower Great Lakes tonight. Meanwhile, broad low pressure of 29.6 inches over the Dakotas will track east, crossing the Upper Great Lakes early Sunday morning and reaching the Lower Great Lakes by Sunday evening. In its wake, 30.0 inch high pressure over the Prairie Provinces will extend 29.8 inch ridging into the Upper Mississippi Valley during Sunday afternoon. This ridge will build to 30.1 inches as it shifts across the Upper Great Lakes during Sunday night and Monday. On Tuesday, the ridge at 30.2 inches will extend from Hudson Bay to the Lower Great Lakes while deep low pressure of 29.1 inches lifts northeast across the central Plains. This low will then weaken to 29.4 inches as it tracks to Wisconsin on Wednesday, and it will weaken further to 29.7 inches as it moves over northern Ontario on Thursday. In its wake, a 30.2 inch high pressure ridge will build southeast across the Plains to the Mid-Mississippi Valley during Thursday and Thursday night. LSZ162-140400- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 351 PM EDT Sat Apr 13 2024 /251 PM CDT Sat Apr 13 2024/ .LATE THIS AFTERNOON...Northeast winds 10 to 20 knots. Isolated rain showers. Waves 2 to 4 feet. .TONIGHT...Northeast winds 10 to 20 knots diminishing to 5 to 15 knots after midnight. A slight chance of rain showers through midnight. Waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. .SUNDAY...West winds 5 to 15 knots becoming southwest 10 to 20 knots in the afternoon, then becoming south 5 to 15 knots late. Waves calm to 2 feet. .SUNDAY NIGHT...West winds 5 to 15 knots veering northwest late. Waves calm to 2 feet. .MONDAY...West winds 5 to 15 knots becoming south 10 to 20 knots by mid afternoon. A slight chance of rain showers by mid afternoon. Waves calm to 2 feet. .MONDAY NIGHT...East winds 10 to 20 knots increasing to 15 to 25 knots after midnight. A chance of rain showers. Waves building to 4 to 7 feet occasionally to 9 feet. .TUESDAY...East gales to 40 knots. A chance of rain showers through early afternoon, then rain showers likely by mid afternoon. Waves building to 9 to 12 feet occasionally to 15 feet. .TUESDAY NIGHT...East gales to 40 knots becoming northeast 20 to 30 knots after midnight. Rain showers. Waves building to 10 to 14 feet occasionally to 18 feet, then subsiding to 5 to 8 feet occasionally to 10 feet. .WEDNESDAY...Northeast winds 20 to 30 knots backing west. Rain showers, then a chance of rain showers. Waves subsiding to 2 to 4 feet. .THURSDAY...West winds 20 to 30 knots diminishing to 15 to 25 knots. A chance of rain showers, possibly mixed with snow. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. $$ LSZ263-140400- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 351 PM EDT Sat Apr 13 2024 .LATE THIS AFTERNOON...East winds 5 to 15 knots. Isolated rain showers. Waves calm to 2 feet building to 1 to 3 feet. .TONIGHT...East winds 10 to 20 knots becoming northeast 5 to 15 knots after midnight. A chance of rain showers through midnight. Waves building to 2 to 4 feet, then subsiding to calm to 2 feet. .SUNDAY...North winds 5 to 15 knots backing west in the afternoon, then backing southwest late. Waves calm to 2 feet. .SUNDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet. .MONDAY...West winds 5 to 15 knots backing south by mid afternoon. Waves calm to 2 feet. .MONDAY NIGHT...East winds 5 to 15 knots increasing to 10 to 20 knots after midnight. Waves building to 1 to 3 feet. .TUESDAY...East winds 20 to 30 knots increasing to gales to 35 knots by mid afternoon. A chance of rain showers. Waves building to 6 to 9 feet occasionally to 11 feet. .TUESDAY NIGHT...East gales to 35 knots. Rain showers. Waves building to 9 to 12 feet occasionally to 15 feet. .WEDNESDAY...East gales to 35 knots becoming west 15 to 25 knots. Rain showers, then a chance of rain showers. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .THURSDAY...West winds 15 to 25 knots. A chance of rain showers, possibly mixed with snow. Waves subsiding to 2 to 4 feet. $$ LSZ264-140400- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 351 PM EDT Sat Apr 13 2024 .LATE THIS AFTERNOON...Southwest winds 5 to 15 knots. Isolated rain showers. Waves calm to 2 feet. .TONIGHT...Southeast winds 5 to 15 knots backing east after midnight. A chance of rain showers through midnight. Waves building to 1 to 3 feet. .SUNDAY...North winds 5 to 15 knots backing west late. Waves subsiding to calm to 2 feet. .SUNDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet. .MONDAY...West winds 5 to 15 knots. Waves calm to 2 feet. .MONDAY NIGHT...East winds 5 to 15 knots. Waves calm to 2 feet. .TUESDAY...East winds 15 to 25 knots increasing to 20 to 30 knots by mid afternoon. A chance of rain showers. Waves building to 5 to 8 feet occasionally to 10 feet. .TUESDAY NIGHT...East gales to 40 knots. Rain showers. Waves building to 9 to 12 feet occasionally to 15 feet. .WEDNESDAY...East gales to 40 knots becoming west 15 to 25 knots. Rain showers. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .THURSDAY...West winds 15 to 25 knots. A chance of rain showers. A chance of snow showers. Waves subsiding to 2 to 4 feet, then building to 3 to 5 feet occasionally to 7 feet. $$ LSZ265-140400- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 351 PM EDT Sat Apr 13 2024 .LATE THIS AFTERNOON...East winds 5 to 15 knots. Isolated rain showers. Waves calm to 2 feet. .TONIGHT...Southeast winds 10 to 20 knots backing east after midnight, then diminishing to 5 to 15 knots late. A chance of rain showers. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet. .SUNDAY...Northwest winds 10 to 20 knots backing west late. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet. .SUNDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet. .MONDAY...West winds 10 to 20 knots becoming north 5 to 15 knots by mid afternoon. Waves calm to 2 feet. .MONDAY NIGHT...East winds 5 to 15 knots. Waves calm to 2 feet. .TUESDAY...East winds 10 to 20 knots increasing to 20 to 30 knots by mid afternoon. A chance of rain showers by mid afternoon. Waves building to 3 to 6 feet occasionally to 8 feet. .TUESDAY NIGHT...East winds 20 to 30 knots increasing to gales to 35 knots after midnight. Rain showers. Waves building to 7 to 10 feet occasionally to 13 feet. .WEDNESDAY...Southeast gales to 35 knots veering west. Rain showers. Waves subsiding to 2 to 4 feet. .THURSDAY...West winds 20 to 30 knots diminishing to 15 to 25 knots. A chance of rain showers. A chance of snow showers. Waves subsiding to 1 to 3 feet. $$ LSZ266-140400- 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- 351 PM EDT Sat Apr 13 2024 .LATE THIS AFTERNOON...West winds 5 to 15 knots. Isolated rain showers. Waves 2 to 4 feet subsiding to 1 to 3 feet. .TONIGHT...Southeast winds 5 to 15 knots increasing to 10 to 20 knots after midnight, then backing east late. A chance of rain showers. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet. .SUNDAY...North winds 10 to 20 knots backing northwest in the afternoon. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet. .SUNDAY NIGHT...West winds 5 to 15 knots. Waves subsiding to calm to 2 feet. .MONDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet. .MONDAY NIGHT...Northwest winds 5 to 15 knots veering east after midnight. Waves calm to 2 feet. .TUESDAY...East winds 10 to 20 knots increasing to 20 to 30 knots by mid afternoon. A chance of rain showers by mid afternoon. Waves building to 3 to 5 feet occasionally to 7 feet. .TUESDAY NIGHT...East gales to 40 knots. Rain showers. Waves building to 8 to 11 feet occasionally to 14 feet. .WEDNESDAY...Southeast gales to 40 knots becoming west 20 to 30 knots. Rain showers. Waves subsiding to 3 to 6 feet occasionally to 8 feet. .THURSDAY...West winds 20 to 30 knots. A chance of rain showers. A chance of snow showers. Waves subsiding to 3 to 5 feet occasionally to 7 feet. $$ LSZ267-140400- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 351 PM EDT Sat Apr 13 2024 .LATE THIS AFTERNOON...West winds 5 to 15 knots. Isolated rain showers. Waves 3 to 5 feet occasionally to 7 feet subsiding to 2 to 4 feet. .TONIGHT...South winds 5 to 15 knots backing southeast after midnight, then increasing to 10 to 20 knots late. Rain showers likely. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet. .SUNDAY...Northeast winds 5 to 15 knots becoming north 10 to 20 knots in the afternoon, then backing northwest late. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet. .SUNDAY NIGHT...West winds 10 to 20 knots. Waves subsiding to calm to 2 feet. .MONDAY...West winds 10 to 20 knots. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet. .MONDAY NIGHT...Northwest winds 10 to 20 knots becoming east 5 to 15 knots after midnight. Waves calm to 2 feet. .TUESDAY...East winds 10 to 20 knots. Waves building to 2 to 4 feet. .TUESDAY NIGHT...East winds 20 to 30 knots increasing to gales to 35 knots after midnight. A chance of rain showers through midnight, then rain showers after midnight. Waves building to 5 to 8 feet occasionally to 10 feet. .WEDNESDAY...Southeast gales to 35 knots becoming west 20 to 30 knots. Rain showers, then a chance of rain showers. Waves subsiding to 3 to 6 feet occasionally to 8 feet. .THURSDAY...West winds 20 to 30 knots diminishing to 15 to 25 knots. A chance of rain showers. A chance of snow showers. Waves subsiding to 2 to 4 feet. $$ LSZ261-140400- MAFOR 1321/ Superior West 11220 12120 12110 11800 11700 11500. A chance of rain showers this evening. Waves 1 to 4 feet. Superior North Central 11510 12310 12210 11110 11800 11710. A chance of rain showers this evening. Waves 1 to 3 feet. Superior South Central 11300 11310 11326 11310 11210 11810 12710. Waves 1 to 3 feet. Superior East 11610 11500 11316 12310 11210 11800 11710. Waves 1 to 4 feet. $$ Rolfson Experimental modernized open lake forecast is available online at weather.gov/mqt/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes ####018005952#### FZUS61 KCLE 131953 GLFLE Open Lake Forecast for Lake Erie National Weather Service Cleveland OH 353 PM EDT Sat Apr 13 2024 For waters beyond five nautical miles of shore on Lake Erie 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 ridge averaging 29.90 inches stretches across the lake and a warm front will lift north on the back side of the ridge tonight. Low pressure 29.60 inches will pass north of the lake on Sunday and extend a cold front across the lake. This front will stay south of the lake as high pressure 30.10 inches enters over the lake. The front will lift north as a warm front on Tuesday. Low pressure 29.20 inches over the Midwest on Tuesday night will move northeast into the Great Lakes region for Wednesday. LEZ162-163-140230- Detroit River Lt. to Maumee Bay OH to Reno Beach OH beyond 5NM offshoreline to US-Canadian border- Reno Beach to The Islands OH beyond 5NM off shoreline to US- Canadian border- 353 PM EDT Sat Apr 13 2024 .TONIGHT...West winds 5 to 15 knots becoming south. Waves 2 feet or less. .SUNDAY...Southwest winds 15 to 20 knots becoming west 10 to 15 knots. A slight chance of showers and thunderstorms late. Waves 1 to 3 feet. .SUNDAY NIGHT...West winds 5 to 15 knots becoming northeast less than 10 knots. Waves 2 feet or less. .MONDAY...Light and variable winds. Waves 1 foot or less. .MONDAY NIGHT...Southeast winds 5 to 10 knots becoming east. Waves 1 foot or less. .TUESDAY...East winds 5 to 15 knots becoming southeast. A chance of showers during the day, then showers Tuesday night. Waves 1 to 3 feet. .WEDNESDAY...South winds 15 to 20 knots becoming west. Showers with a chance of thunderstorms during the day, then a chance of showers and thunderstorms Wednesday night. Waves 1 to 3 feet building to 2 to 4 feet. .THURSDAY...West winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of showers. Waves 1 to 3 feet. Winds and waves higher in and near thunderstorms. $$ LEZ164>166-140230- The Islands to Vermilion OH beyond 5 nm off shoreline to US- Canadian border- Vermilion to Avon Point OH beyond 5 nm off shoreline to US- Canadian border- Avon Point to Willowick OH beyond 5 nm off shoreline to US- Canadian border- 353 PM EDT Sat Apr 13 2024 .TONIGHT...West winds 10 to 15 knots becoming south. Waves 1 to 3 feet. .SUNDAY...South winds 15 to 20 knots becoming west. A slight chance of showers and thunderstorms early in the afternoon. A chance of showers and thunderstorms late. Waves 2 to 4 feet building to 3 to 5 feet, then subsiding to 2 to 4 feet. .SUNDAY NIGHT...West winds 5 to 15 knots becoming north. A chance of showers and thunderstorms in the evening. Waves 2 to 4 feet subsiding to 1 to 2 feet. .MONDAY...North winds 10 knots or less becoming south. Waves 1 foot or less. .MONDAY NIGHT...Southeast winds 5 to 10 knots. Waves 1 foot or less. .TUESDAY...East winds 5 to 10 knots becoming southeast 10 to 15 knots. A chance of showers during the day, then showers likely Tuesday night. Waves 1 foot or less building to 2 to 4 feet, then subsiding to 1 to 3 feet. .WEDNESDAY...South winds 15 to 20 knots becoming west. Showers with a chance of thunderstorms during the day, then a chance of showers and thunderstorms Wednesday night. Waves 2 to 4 feet building to 3 to 5 feet. .THURSDAY...West winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of showers. Waves 3 to 5 feet subsiding to 1 to 3 feet. Winds and waves higher in and near thunderstorms. $$ LEZ061-167>169-140230- Ripley to Buffalo NY extending from 5NM off shoreline to US- Canadian border-Willowick to Geneva-on-the- Lake OH beyond 5NM off shoreline to US-Canadian border-Geneva-on- the-Lake to Conneaut OH beyond 5 nm off shoreline to US- Canadian border- Conneaut OH to Ripley NY beyond 5 nm off shoreline to US- Canadian border- 353 PM EDT Sat Apr 13 2024 .TONIGHT...Southwest winds 15 to 20 knots diminishing to 10 to 15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet. .SUNDAY...South winds 15 to 20 knots becoming west. A slight chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. Waves 2 to 4 feet building to 3 to 5 feet. .SUNDAY NIGHT...West winds 5 to 15 knots becoming northwest. A chance of showers and thunderstorms in the evening. Waves 2 to 4 feet subsiding to 1 to 2 feet. .MONDAY...Northwest winds 5 to 15 knots becoming southwest. Waves 2 feet or less. .MONDAY NIGHT...Southwest winds 5 to 15 knots becoming southeast less than 10 knots. Waves 2 feet or less. .TUESDAY...East winds 5 to 15 knots. Showers likely Tuesday night. Waves 1 to 3 feet. .WEDNESDAY...Southeast winds 15 to 20 knots becoming southwest. Showers with a chance of thunderstorms. Waves 1 to 3 feet building to 3 to 5 feet. .THURSDAY...West winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of showers. Waves 3 to 5 feet subsiding to 2 to 4 feet. Winds and waves higher in and near thunderstorms. $$ LEZ161-140230- MAFOR 1321/ ERIE WEST 1/3 11610 11600 11500 11410 11420 12520 11620. Waves 1 to 3 feet tonight. Waves 2 to 4 feet Sunday. ERIE CENTRAL 1/3 11610 11510 11500 11510 11420 13520. A chance of showers and thunderstorms Sunday afternoon. Waves 3 to 5 feet subsiding to 1 to 3 feet tonight. Waves 2 to 4 feet building to 3 to 5 feet Sunday. ERIE EAST 1/3 11620 11510 12500 11410 11420 11520 11620. A chance of showers overnight. A chance of showers and thunderstorms Sunday afternoon. Waves 3 to 5 feet subsiding to 2 to 4 feet tonight. Waves 2 to 4 feet Sunday. $$