####018010978#### FZUS63 KMQT 221352 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 952 AM EDT Mon Apr 22 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...29.5 inch low pressure sliding into Manitoba this morning will move east and be north of Thunder Bay Ontario by this evening while deepening to 29.4 inches. This low develops into a trough of 29.5 inches over eastern Lake Superior Tuesday morning while 30.3 inch high pressure moves into northern Manitoba and into northern Ontario by Tuesday evening. This high strengthens to 30.4 inches and quickly shifts south across Lake Superior Tuesday night and Wednesday. Ridging shifts east of the area Thursday ahead of a low pressure that deepens to 29.2 inches over the North-Central Plains on Friday. LSZ162-222200- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 952 AM EDT Mon Apr 22 2024 /852 AM CDT Mon Apr 22 2024/ .REST OF TODAY...Southwest winds 10 to 20 knots backing south late. Waves 1 to 3 feet. .TONIGHT...Southwest winds 10 to 20 knots veering west late. A chance of rain showers and a slight chance of thunderstorms through midnight. Waves subsiding to calm to 2 feet. .TUESDAY...Northeast winds 20 to 30 knots diminishing to 15 to 25 knots late. A slight chance of rain showers through early afternoon. A chance of snow showers. Waves building to 5 to 8 feet occasionally to 10 feet. .TUESDAY NIGHT...Northeast winds 10 to 20 knots. Waves subsiding to 2 to 4 feet. .WEDNESDAY...East winds 10 to 20 knots. Waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. .WEDNESDAY NIGHT...East winds 5 to 15 knots. Waves subsiding to calm to 2 feet. .THURSDAY...East winds 10 to 20 knots becoming southeast 15 to 25 knots. Waves building to 2 to 4 feet. .FRIDAY...East winds 15 to 25 knots increasing to 20 to 30 knots. A chance of rain showers, then rain showers. Waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. $$ LSZ263-222200- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 952 AM EDT Mon Apr 22 2024 ...GALE WARNING IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY AFTERNOON... .REST OF TODAY...Southwest winds 15 to 25 knots diminishing to 10 to 20 knots late. Waves 2 to 4 feet subsiding to 1 to 3 feet. .TONIGHT...Southwest winds 10 to 20 knots veering west late. A chance of rain showers and a slight chance of thunderstorms. Waves 1 to 3 feet. .TUESDAY...North gales to 35 knots veering northeast in the afternoon, then diminishing to 20 to 30 knots late. A chance of rain showers through early afternoon. A chance of snow showers. Waves building to 7 to 10 feet occasionally to 13 feet, then subsiding to 5 to 8 feet occasionally to 10 feet. .TUESDAY NIGHT...Northeast winds 15 to 25 knots diminishing to 10 to 20 knots after midnight. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .WEDNESDAY...East winds 5 to 15 knots increasing to 10 to 20 knots by mid afternoon. Waves subsiding to calm to 2 feet. .WEDNESDAY NIGHT...Southeast winds 5 to 15 knots veering south after midnight. Waves calm to 2 feet. .THURSDAY...South winds 5 to 15 knots increasing to 10 to 20 knots. Waves building to 2 to 4 feet. .FRIDAY...Southeast winds 15 to 25 knots. Rain showers. Waves building to 3 to 6 feet occasionally to 8 feet. $$ LSZ264-222200- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 952 AM EDT Mon Apr 22 2024 ...GALE WARNING IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY AFTERNOON... .REST OF TODAY...Southwest winds 15 to 25 knots diminishing to 10 to 20 knots in the afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet. .TONIGHT...Southwest winds 10 to 20 knots veering west late. Rain showers likely through midnight. A slight chance of thunderstorms. A chance of rain showers after midnight. Waves 1 to 3 feet. .TUESDAY...North gales to 35 knots veering northeast in the afternoon, then diminishing to 20 to 30 knots late. A chance of rain showers through early afternoon. A chance of snow showers. Waves building to 8 to 11 feet occasionally to 14 feet, then subsiding to 6 to 9 feet occasionally to 11 feet. .TUESDAY NIGHT...Northeast winds 20 to 30 knots diminishing to 15 to 25 knots after midnight. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .WEDNESDAY...East winds 5 to 15 knots veering south by mid afternoon. Waves subsiding to calm to 2 feet. .WEDNESDAY NIGHT...South winds 5 to 15 knots. Waves calm to 2 feet. .THURSDAY...South winds 10 to 20 knots increasing to 15 to 25 knots. Waves building to 3 to 6 feet occasionally to 8 feet. .FRIDAY...Southeast winds 20 to 30 knots. A chance of rain showers. Waves building to 4 to 7 feet occasionally to 9 feet. $$ LSZ265-222200- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 952 AM EDT Mon Apr 22 2024 ...GALE WARNING IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY AFTERNOON... .REST OF TODAY...Southwest winds 10 to 20 knots. Waves calm to 2 feet. .TONIGHT...South winds 10 to 20 knots veering west late. Rain showers likely through midnight. A slight chance of thunderstorms. A chance of rain showers after midnight. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet. .TUESDAY...West winds 15 to 25 knots becoming north gales to 35 knots in the afternoon. A slight chance of rain showers through early afternoon. A chance of snow showers. Waves building to 7 to 10 feet occasionally to 13 feet. .TUESDAY NIGHT...Northeast winds 20 to 30 knots diminishing to 15 to 25 knots after midnight. Waves subsiding to 3 to 6 feet occasionally to 8 feet. .WEDNESDAY...Northeast winds 10 to 20 knots veering east by mid afternoon. Waves subsiding to calm to 2 feet. .WEDNESDAY NIGHT...Southeast winds 10 to 20 knots veering south after midnight. Waves calm to 2 feet. .THURSDAY...Southeast winds 10 to 20 knots becoming south 20 to 30 knots. Waves building to 2 to 4 feet. .FRIDAY...Southeast winds 20 to 30 knots. Rain showers. Waves building to 3 to 5 feet occasionally to 7 feet. $$ LSZ266-222200- 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- 952 AM EDT Mon Apr 22 2024 ...GALE WARNING IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY AFTERNOON... .REST OF TODAY...Southwest winds 10 to 20 knots backing south late. Waves 2 to 4 feet subsiding to 1 to 3 feet. .TONIGHT...South winds 15 to 25 knots becoming southwest 10 to 20 knots late. Rain showers likely through midnight. A slight chance of thunderstorms. A chance of rain showers after midnight. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 1 to 3 feet. .TUESDAY...West gales to 35 knots veering north in the afternoon. A chance of snow showers, possibly mixed with rain. Waves building to 7 to 11 feet occasionally to 14 feet. .TUESDAY NIGHT...Northeast winds 20 to 30 knots. Waves subsiding to 3 to 6 feet occasionally to 8 feet. .WEDNESDAY...Northeast winds 10 to 20 knots becoming north 5 to 15 knots by mid afternoon. Waves subsiding to calm to 2 feet. .WEDNESDAY NIGHT...Southeast winds 5 to 15 knots becoming south 10 to 20 knots after midnight. Waves calm to 2 feet. .THURSDAY...South winds 10 to 20 knots increasing to 15 to 25 knots. Waves building to 3 to 6 feet occasionally to 8 feet. .FRIDAY...Southeast winds 20 to 30 knots increasing to gales to 35 knots. A chance of rain showers. Waves building to 4 to 7 feet occasionally to 9 feet. $$ LSZ267-222200- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 952 AM EDT Mon Apr 22 2024 ...GALE WARNING IN EFFECT FROM TUESDAY AFTERNOON THROUGH LATE TUESDAY NIGHT... .REST OF TODAY...Southwest winds 15 to 25 knots backing south late. Waves 2 to 4 feet building to 3 to 5 feet occasionally to 7 feet, then subsiding to 1 to 3 feet. .TONIGHT...South winds 20 to 30 knots diminishing to 15 to 25 knots late. A chance of rain showers through midnight. A slight chance of thunderstorms. Rain showers likely after midnight. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 1 to 3 feet. .TUESDAY...Southwest winds 10 to 20 knots becoming north 20 to 30 knots in the afternoon, then becoming northeast gales to 35 knots late. A slight chance of rain showers. A slight chance of snow showers by mid afternoon. Waves subsiding to calm to 2 feet, then building to 6 to 9 feet occasionally to 11 feet. .TUESDAY NIGHT...Northeast gales to 35 knots diminishing to 20 to 30 knots after midnight. Waves building to 7 to 10 feet occasionally to 13 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. .WEDNESDAY...Northeast winds 15 to 25 knots becoming north 5 to 15 knots by mid afternoon. Waves subsiding to calm to 2 feet. .WEDNESDAY NIGHT...Northwest winds 5 to 15 knots becoming south 10 to 20 knots after midnight. Waves calm to 2 feet. .THURSDAY...Southeast winds 10 to 20 knots becoming south 15 to 25 knots. Waves building to 2 to 4 feet. .FRIDAY...Southeast winds 20 to 30 knots increasing to gales to 35 knots. Rain showers likely. Waves building to 3 to 6 feet occasionally to 8 feet. $$ LSZ261-222200- MAFOR 2215/ Superior West...GALE WARNING IN EFFECT...11520 12420 12520 11510 11610 11730. A chance of rain showers tonight and Tuesday morning. Waves 1 to 3 feet. Superior North Central...GALE WARNING IN EFFECT...12530 12420 11526 11520 11630 11850. A chance of snow showers Tuesday morning. Waves 2 to 4 feet this afternoon. Waves 1 to 3 feet tonight. Waves 3 to 5 feet building to 5 to 8 feet Tuesday morning. Superior South Central...GALE WARNING IN EFFECT...11510 12410 11420 11426 11520 11510 11620. Waves 1 to 3 feet. Superior East...GALE WARNING IN EFFECT...12520 11420 12430 11436 11420 11520. Waves 3 to 5 feet subsiding to 2 to 3 feet this afternoon. Waves 2 to 4 feet building to 3 to 5 feet tonight. Waves 2 to 4 feet Tuesday morning. $$ LC Experimental modernized open lake forecast is available online at weather.gov/mqt/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes