####018011598#### FZUS63 KMQT 291358 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 958 AM EDT Mon Apr 29 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 30.6 inch high pressure over James Bay will shift northeast into Quebec today. Meanwhile, a 29.7 inch low pressure over southern Minnesota will track northeast, crossing western Lake Superior tonight and exiting into Ontario Tuesday morning as it weakens to 29.8 inches. During Tuesday afternoon and evening, a weak high pressure ridge of 29.9 inches will shift east across Lake Superior while a low pressure trough of 29.6 inches moves from the western Plains to Minnesota and Iowa. This trough will weaken to 29.7 inches as it sails across Lake Superior on Wednesday. As a 30.0 inch ridge then shifts east across the western Great Lakes during Wednesday night, a 29.3 inch Colorado Low will lift out over the Plains while weakening to 29.5 inches. This low will then track to the Upper Mississippi Valley on Thursday and into northern Ontario on Friday. LSZ162-292200- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 958 AM EDT Mon Apr 29 2024 /858 AM CDT Mon Apr 29 2024/ ...GALE WARNING IN EFFECT UNTIL 5 PM EDT /4 PM CDT/ THIS AFTERNOON... .REST OF TODAY...Northeast gales to 40 knots diminishing to gales to 35 knots this afternoon, then to 20 to 30 knots late. Scattered rain showers through late morning, then numerous rain showers by mid afternoon. Waves 10 to 14 feet occasionally to 18 feet subsiding to 7 to 10 feet occasionally to 13 feet. .TONIGHT...Northeast winds 15 to 25 knots becoming northwest 10 to 20 knots after midnight, then backing west late. A chance of rain showers. Waves subsiding to 2 to 4 feet. .TUESDAY...West winds 10 to 20 knots becoming southwest 5 to 15 knots in the afternoon, then backing south late. Waves subsiding to calm to 2 feet. .TUESDAY NIGHT...East winds 5 to 15 knots increasing to 10 to 20 knots after midnight. A chance of rain showers through midnight, then rain showers after midnight. Waves building to 2 to 4 feet. .WEDNESDAY...Southwest winds 15 to 25 knots. A chance of rain showers in the morning. Waves building to 4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 5 feet occasionally to 7 feet. .WEDNESDAY NIGHT...West winds 5 to 15 knots backing east after midnight. Waves subsiding to calm to 2 feet. .THURSDAY...Northeast winds 15 to 25 knots. A chance of rain showers. Waves building to 2 to 4 feet. .FRIDAY...Southwest winds 15 to 25 knots veering west. A chance of rain showers. Waves subsiding to 1 to 3 feet. $$ LSZ263-292200- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 958 AM EDT Mon Apr 29 2024 ...GALE WARNING IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON... .REST OF TODAY...East gales to 35 knots diminishing to 20 to 30 knots late. Scattered rain showers. Waves 9 to 12 feet occasionally to 15 feet subsiding to 7 to 10 feet occasionally to 13 feet. .TONIGHT...Northeast winds 15 to 25 knots diminishing to 10 to 20 knots after midnight, then becoming west 5 to 15 knots late. A chance of rain showers. Waves subsiding to 2 to 4 feet. .TUESDAY...West winds 5 to 15 knots backing southwest late. Waves subsiding to calm to 2 feet. .TUESDAY NIGHT...East winds 5 to 15 knots increasing to 10 to 20 knots after midnight. A slight chance of rain showers through midnight, then rain showers likely after midnight. Waves building to 2 to 4 feet. .WEDNESDAY...Southwest winds 15 to 25 knots increasing to 20 to 30 knots by mid afternoon. A chance of rain showers. Waves building to 4 to 8 feet occasionally to 10 feet. .WEDNESDAY NIGHT...Southwest winds 5 to 15 knots backing south after midnight. Waves subsiding to calm to 2 feet. .THURSDAY...East winds 10 to 20 knots increasing to 15 to 25 knots. A chance of rain showers. Waves building to 2 to 4 feet. .FRIDAY...Southwest winds 10 to 20 knots veering west. A chance of rain showers. Waves 2 to 4 feet. $$ LSZ264-292200- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 958 AM EDT Mon Apr 29 2024 ...GALE WARNING IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON... .REST OF TODAY...East gales to 35 knots diminishing to 20 to 30 knots late. Scattered rain showers. Waves 8 to 11 feet occasionally to 14 feet subsiding to 7 to 10 feet occasionally to 13 feet. .TONIGHT...East winds 15 to 25 knots diminishing to 10 to 20 knots after midnight, then becoming west 5 to 15 knots late. Rain showers likely through midnight, then a chance of rain showers after midnight. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .TUESDAY...Northwest winds 5 to 15 knots backing west in the afternoon. Waves subsiding to calm to 2 feet. .TUESDAY NIGHT...Southeast winds 5 to 15 knots increasing to 10 to 20 knots after midnight. A chance of rain showers after midnight. Waves building to 2 to 4 feet. .WEDNESDAY...South winds 15 to 25 knots becoming west 20 to 30 knots by mid afternoon. A chance of rain showers. Waves building to 4 to 8 feet occasionally to 10 feet. .WEDNESDAY NIGHT...West winds 5 to 15 knots backing south after midnight. Waves subsiding to calm to 2 feet. .THURSDAY...East winds 10 to 20 knots. A chance of rain showers. Waves building to 2 to 4 feet. .FRIDAY...East winds 10 to 20 knots veering southwest. A chance of rain showers. Waves 2 to 4 feet. $$ LSZ265-292200- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 958 AM EDT Mon Apr 29 2024 ...GALE WARNING IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON... .REST OF TODAY...East winds to 30 knots with a few gale force gusts to 35 knots diminishing to 15 to 25 knots late. Scattered rain showers. Waves 7 to 10 feet occasionally to 13 feet subsiding to 5 to 8 feet occasionally to 10 feet. .TONIGHT...East winds 10 to 20 knots veering south after midnight, then veering west late. A chance of rain showers. Waves subsiding to 1 to 3 feet. .TUESDAY...West winds 10 to 20 knots becoming northwest 5 to 15 knots late. Waves subsiding to calm to 2 feet. .TUESDAY NIGHT...Southeast winds 5 to 15 knots increasing to 10 to 20 knots after midnight. A chance of rain showers after midnight. Waves building to 1 to 3 feet. .WEDNESDAY...South winds 10 to 20 knots veering west by mid afternoon. A chance of showers through early afternoon. Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. .WEDNESDAY NIGHT...West winds 5 to 15 knots backing south after midnight. Waves subsiding to calm to 2 feet. .THURSDAY...East winds 5 to 15 knots increasing to 15 to 25 knots. A chance of rain showers. Waves building to 1 to 3 feet. .FRIDAY...Southeast winds 15 to 25 knots veering southwest. A chance of showers. Waves building to 2 to 4 feet, then subsiding to calm to 2 feet. $$ LSZ266-292200- 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- 958 AM EDT Mon Apr 29 2024 ...GALE WARNING IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON... .REST OF TODAY...East gales to 35 knots diminishing to 20 to 30 knots late. Numerous rain showers through late morning, then scattered rain showers by mid afternoon. Waves 6 to 10 feet occasionally to 13 feet. .TONIGHT...East winds 15 to 25 knots becoming southeast 10 to 20 knots after midnight, then veering southwest late. A chance of rain showers. Waves subsiding to 2 to 4 feet. .TUESDAY...West winds 10 to 20 knots becoming northwest 5 to 15 knots late. Waves subsiding to 1 to 3 feet. .TUESDAY NIGHT...Southeast winds 5 to 15 knots increasing to 10 to 20 knots after midnight. A slight chance of rain showers after midnight. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet. .WEDNESDAY...South winds 10 to 20 knots becoming west 15 to 25 knots by mid afternoon. A chance of rain showers. Waves building to 4 to 7 feet occasionally to 9 feet. .WEDNESDAY NIGHT...West winds 5 to 15 knots backing south after midnight. Waves subsiding to calm to 2 feet. .THURSDAY...East winds 5 to 15 knots increasing to 15 to 25 knots. A chance of rain showers. Waves building to 1 to 3 feet. .FRIDAY...Southeast winds 15 to 25 knots veering southwest. A chance of rain showers. Waves building to 2 to 4 feet. $$ LSZ267-292200- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 958 AM EDT Mon Apr 29 2024 .REST OF TODAY...East winds to 30 knots with a few gale force gusts to 35 knots possible diminishing to 15 to 25 knots. Rain showers through late morning, then isolated rain showers by mid afternoon. Waves 4 to 7 feet occasionally to 9 feet subsiding to 3 to 5 feet occasionally to 7 feet. .TONIGHT...Southeast winds 15 to 25 knots diminishing to 10 to 20 knots after midnight, then veering south late. A chance of rain showers. Waves subsiding to calm to 2 feet. .TUESDAY...West winds 10 to 20 knots diminishing to 5 to 15 knots late. Waves building to 1 to 3 feet. .TUESDAY NIGHT...South winds 5 to 15 knots backing southeast after midnight. A slight chance of rain showers after midnight. Waves subsiding to calm to 2 feet. .WEDNESDAY...Southeast winds 10 to 20 knots veering west by mid afternoon. A chance of rain showers. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet. .WEDNESDAY NIGHT...West winds 10 to 20 knots diminishing to 5 to 15 knots after midnight. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet. .THURSDAY...East winds 5 to 15 knots increasing to 15 to 25 knots. A chance of rain showers. Waves building to 1 to 3 feet. .FRIDAY...Southeast winds 15 to 25 knots veering southwest. A chance of rain showers. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet. $$ LSZ261-292200- MAFOR 2915/ Superior West...GALE WARNING IN EFFECT...12150 19156 11146 11130 11820 11710 12610. Waves 9 to 13 feet this afternoon subsiding to 4 to 6 feet tonight. Waves 2 to 4 feet Tuesday morning. Superior North Central...GALE WARNING IN EFFECT...12250 19256 11240 19246 11236 11220 11320 11710 11720. Waves 8 to 11 feet this afternoon subsiding to 4 to 7 feet tonight. Waves 3 to 5 feet Tuesday morning. Superior South Central...GALE WARNING IN EFFECT...11256 11240 19246 11230 19236 11320 11310 11510 12620. Waves 6 to 9 feet this afternoon subsiding to 2 to 4 feet tonight and Tuesday morning. Superior East...GALE WARNING IN EFFECT...12256 11240 11230 11320 11420 11510 11610. Waves 5 to 8 feet this afternoon subsiding to 1 to 4 feet tonight and Tuesday 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