FZUS63 KMQT 312011 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 411 PM EDT Sat Oct 31 2020 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...Lake Superior will be between a 30.5 inch high pressure over the East Coast and a 29.2 inch low pressure moving eastward across northwestern Ontario. A 29.6 inch trough associated with the low will sweep across Lake Superior this evening. Sunday, a 30.6 inch high pressure will envelop the Central and Southern Plains. A 30.2 inch ridge will extend from the high across Lake Superior Sunday night. Monday, a 29.8 inch trough will move southeast across Lake Superior. This trough will be followed by a weak ridge around 30.0 inches Monday night into Tuesday morning. Behind the ridge, another trough of 29.8 inches will move over Lake Superior Tuesday afternoon and remain through Wednesday. LSZ162-010415- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 411 PM EDT Sat Oct 31 2020 /311 PM CDT Sat Oct 31 2020/ ...GALE WARNING IN EFFECT FROM 8 PM EDT /7 PM CDT/ THIS EVENING THROUGH SUNDAY AFTERNOON... .LATE THIS AFTERNOON...Southwest winds 20 to 30 knots. Isolated showers. Waves 5 to 8 feet occasionally to 10 feet. .TONIGHT...West gales to 40 knots becoming northwest gales to 45 knots late. Isolated rain and snow showers. Waves building to 8 to 11 feet occasionally to 14 feet. .SUNDAY...Northwest gales to 45 knots diminishing to 15 to 25 knots late. Isolated snow showers through early afternoon. Waves building to 9 to 12 feet occasionally to 15 feet, then subsiding to 3 to 5 feet occasionally to 7 feet. .SUNDAY NIGHT...West winds 15 to 25 knots backing southwest late. Waves subsiding to 1 to 3 feet, then building to 4 to 7 feet occasionally to 9 feet. .MONDAY...West winds 20 to 30 knots diminishing to 15 to 25 knots by mid afternoon. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .MONDAY NIGHT...West winds 10 to 20 knots diminishing to 5 to 15 knots after midnight. Waves subsiding to calm to 2 feet. .TUESDAY...South winds 10 to 20 knots veering southwest by mid afternoon. Waves calm to 2 feet. .TUESDAY NIGHT...Southwest winds 10 to 20 knots. Waves calm to 2 feet. .WEDNESDAY...Southwest winds 10 to 20 knots. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet. .THURSDAY...West winds 10 to 20 knots becoming southwest 5 to 15 knots. Waves calm to 2 feet. $$ LSZ263-010415- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 411 PM EDT Sat Oct 31 2020 ...GALE WARNING IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH SUNDAY AFTERNOON... .LATE THIS AFTERNOON...Southwest gales to 35 knots. Isolated showers. Waves 5 to 9 feet occasionally to 11 feet. .TONIGHT...West gales to 40 knots becoming northwest gales to 45 knots late. Scattered snow showers, possibly mixed with rain. Waves building to 10 to 14 feet occasionally to 18 feet. .SUNDAY...Northwest gales to 45 knots diminishing to 20 to 30 knots late. Scattered snow showers through early afternoon. Waves subsiding to 4 to 7 feet occasionally to 9 feet. .SUNDAY NIGHT...Northwest winds 15 to 25 knots backing west after midnight, then increasing to 20 to 30 knots late. Waves subsiding to 2 to 4 feet, then building to 4 to 7 feet occasionally to 9 feet. .MONDAY...West winds 20 to 30 knots diminishing to 15 to 25 knots by mid afternoon. Waves building to 7 to 10 feet occasionally to 13 feet, then subsiding to 5 to 8 feet occasionally to 10 feet. .MONDAY NIGHT...Northwest winds 15 to 25 knots diminishing to 10 to 20 knots after midnight. Waves subsiding to calm to 2 feet. .TUESDAY...South winds 10 to 20 knots veering southwest by mid afternoon. Waves calm to 2 feet. .TUESDAY NIGHT...Southwest winds 10 to 20 knots. Waves calm to 2 feet. .WEDNESDAY...Southwest winds 10 to 20 knots. Waves building to 1 to 3 feet. .THURSDAY...West winds 10 to 20 knots backing southwest. Waves subsiding to calm to 2 feet. $$ LSZ264-010415- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 411 PM EDT Sat Oct 31 2020 ...GALE WARNING IN EFFECT UNTIL 11 PM EDT THIS EVENING... ...STORM WARNING IN EFFECT FROM 11 PM EDT THIS EVENING THROUGH SUNDAY EVENING... .LATE THIS AFTERNOON...Southwest winds 15 to 25 knots. Isolated showers. Waves 10 to 14 feet occasionally to 18 feet subsiding to 7 to 10 feet occasionally to 13 feet. .TONIGHT...West gales to 40 knots becoming northwest gales to 45 knots late. Scattered rain showers. Numerous snow showers after midnight. Waves subsiding to 6 to 9 feet occasionally to 11 feet, then building to 10 to 14 feet occasionally to 18 feet. .SUNDAY...North storm force winds to 55 knots becoming northwest gales to 40 knots late. Numerous rain showers through early afternoon. Scattered snow showers. Waves building to 15 to 20 feet occasionally to 25 feet, then subsiding to 8 to 11 feet occasionally to 14 feet. .SUNDAY NIGHT...Northwest winds 15 to 25 knots becoming west 10 to 20 knots after midnight, then increasing to 20 to 30 knots late. Waves subsiding to 2 to 4 feet, then building to 4 to 7 feet occasionally to 9 feet. .MONDAY...West winds 20 to 30 knots. Waves building to 6 to 10 feet occasionally to 13 feet. .MONDAY NIGHT...Northwest winds 15 to 25 knots becoming north 10 to 20 knots after midnight. Waves subsiding to 1 to 3 feet. .TUESDAY...South winds 5 to 15 knots increasing to 10 to 20 knots by mid afternoon. Waves subsiding to calm to 2 feet. .TUESDAY NIGHT...South winds 10 to 20 knots diminishing to 5 to 15 knots after midnight. Waves calm to 2 feet. .WEDNESDAY...Southwest winds 5 to 15 knots veering west. Waves building to 1 to 3 feet. .THURSDAY...West winds 5 to 15 knots backing southwest. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet. $$ LSZ265-010415- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 411 PM EDT Sat Oct 31 2020 ...GALE WARNING IN EFFECT UNTIL 11 PM EDT THIS EVENING... ...STORM WARNING IN EFFECT FROM 11 PM EDT THIS EVENING THROUGH SUNDAY EVENING... .LATE THIS AFTERNOON...South gales to 35 knots. Isolated showers. Waves 7 to 10 feet occasionally to 13 feet subsiding to 5 to 8 feet occasionally to 10 feet. .TONIGHT...West winds 20 to 30 knots increasing to gales to 40 knots after midnight. Scattered rain showers. Scattered snow showers after midnight. Waves subsiding to 3 to 6 feet occasionally to 8 feet, then building to 7 to 10 feet occasionally to 13 feet. .SUNDAY...Northwest storm force winds to 55 knots diminishing to gales to 45 knots late. Snow showers, possibly mixed with rain through early afternoon, then scattered snow showers, possibly mixed with rain by mid afternoon. Waves building to 15 to 20 feet occasionally to 25 feet, then subsiding to 10 to 14 feet occasionally to 18 feet. .SUNDAY NIGHT...Northwest winds 20 to 30 knots diminishing to 15 to 25 knots after midnight, then backing west late. Waves subsiding to 2 to 4 feet. .MONDAY...West winds 20 to 30 knots increasing to gales to 35 knots by mid afternoon. Waves building to 4 to 7 feet occasionally to 9 feet. .MONDAY NIGHT...Northwest winds 20 to 30 knots diminishing to 10 to 20 knots after midnight. Waves subsiding to 1 to 3 feet. .TUESDAY...South winds 5 to 15 knots increasing to 15 to 25 knots by mid afternoon. Waves subsiding to calm to 2 feet. .TUESDAY NIGHT...Southwest winds 15 to 25 knots diminishing to 10 to 20 knots after midnight. Waves calm to 2 feet. .WEDNESDAY...Southwest winds 10 to 20 knots. Waves calm to 2 feet. .THURSDAY...West winds 10 to 20 knots backing southwest. Waves calm to 2 feet. $$ LSZ266-010415- 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- 411 PM EDT Sat Oct 31 2020 ...STORM WARNING IN EFFECT THROUGH SUNDAY EVENING... .LATE THIS AFTERNOON...South storm force winds to 55 knots. Scattered showers. Waves 11 to 15 feet occasionally to 19 feet subsiding to 10 to 14 feet occasionally to 18 feet. .TONIGHT...Southwest gales to 35 knots becoming west gales to 40 knots after midnight. Scattered rain showers. Numerous snow showers after midnight. Waves subsiding to 7 to 10 feet occasionally to 13 feet, then building to 9 to 12 feet occasionally to 15 feet. .SUNDAY...Northwest storm force winds to 55 knots veering north in the afternoon, then diminishing to gales to 45 knots late. Snow showers, possibly mixed with rain through early afternoon, then scattered rain and snow showers by mid afternoon. Waves building to 20 to 25 feet occasionally to 31 feet, then subsiding to 15 to 20 feet occasionally to 25 feet. .SUNDAY NIGHT...Northwest gales to 35 knots diminishing to 15 to 25 knots after midnight, then backing west late. Waves subsiding to 3 to 6 feet occasionally to 8 feet. .MONDAY...West winds 20 to 30 knots. Waves building to 8 to 11 feet occasionally to 14 feet. .MONDAY NIGHT...Northwest winds 20 to 30 knots becoming north 10 to 20 knots after midnight. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .TUESDAY...South winds 10 to 20 knots increasing to 15 to 25 knots by mid afternoon. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet. .TUESDAY NIGHT...South winds 15 to 25 knots. Waves 1 to 3 feet. .WEDNESDAY...South winds 10 to 20 knots becoming southwest 15 to 25 knots. Waves 1 to 3 feet. .THURSDAY...West winds 10 to 20 knots backing southwest. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet. $$ LSZ267-010415- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 411 PM EDT Sat Oct 31 2020 ...STORM WARNING IN EFFECT THROUGH SUNDAY EVENING... .LATE THIS AFTERNOON...South storm force winds to 50 knots. Scattered showers. Waves 9 to 12 feet occasionally to 15 feet. .TONIGHT...South gales to 35 knots becoming west gales to 40 knots after midnight. Rain showers. Numerous snow showers after midnight. Waves subsiding to 6 to 9 feet occasionally to 11 feet, then building to 9 to 12 feet occasionally to 15 feet. .SUNDAY...Northwest gales to 45 knots becoming north storm force winds to 55 knots in the afternoon. Numerous rain showers, possibly mixed with snow through early afternoon, then scattered rain and snow showers by mid afternoon. Waves building to 17 to 22 feet occasionally to 28 feet, then subsiding to 15 to 20 feet occasionally to 25 feet. .SUNDAY NIGHT...North gales to 35 knots becoming northwest 15 to 25 knots after midnight, then backing west late. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .MONDAY...West winds 20 to 30 knots increasing to gales to 35 knots by mid afternoon. Waves building to 8 to 11 feet occasionally to 14 feet. .MONDAY NIGHT...Northwest gales to 35 knots becoming north 15 to 25 knots after midnight. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .TUESDAY...South winds 10 to 20 knots. Waves subsiding to calm to 2 feet. .TUESDAY NIGHT...South winds 15 to 25 knots. Waves building to 1 to 3 feet. .WEDNESDAY...South winds 10 to 20 knots becoming southwest 15 to 25 knots. Waves 1 to 3 feet. .THURSDAY...Southwest winds 10 to 20 knots. Waves subsiding to calm to 2 feet. $$ LSZ261-010415- MAFOR 3121/ Superior West...GALE WARNING IN EFFECT...11540 12650 13760 11750 11740. Waves 5 to 8 feet building to 7 to 11 feet tonight. Waves 8 to 12 feet subsiding to 5 to 8 feet Sunday. Superior North Central...STORM WARNING IN EFFECT...11540 19546 12650 11650 19657 11767 11777 11870 19877 11860. Waves 8 to 12 feet subsiding to 7 to 10 feet, then building to 9 to 12 feet tonight. Waves 10 to 13 feet building to 13 to 18 feet, then subsiding to 12 to 16 feet Sunday. Superior South Central...STORM WARNING IN EFFECT...11460 11540 19546 11650 19656 11650 19657 11767 12777 11770 19777. Waves 8 to 12 feet subsiding to 4 to 7 feet, then building to 6 to 10 feet tonight. Waves 9 to 12 feet building to 16 to 21 feet Sunday. Superior East...STORM WARNING IN EFFECT...11470 19476 11556 11546 11650 19656 11657 11757 11877 11870 19877. Waves 10 to 14 feet subsiding to 6 to 9 feet, then building to 9 to 12 feet tonight building to 15 to 20 feet Sunday. $$ JSS Experimental modernized open lake forecast is available online at weather.gov/mqt/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes