Great Lakes Forecast
Issued by NWS
Issued by NWS
517 FZUS61 KCLE 220147 GLFLE Open Lake Forecast for Lake Erie National Weather Service Cleveland OH 947 PM EDT Tue Jul 21 2026 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 trough averaging 29.90 inches will linger over the Lower Great Lakes through Wednesday evening. High pressure 30.20 inches builds into the region early Thursday and drifts to the east through Saturday. LEZ162-163-220830- 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- 947 PM EDT Tue Jul 21 2026 .REST OF TONIGHT...Northwest winds 15 to 25 knots. A slight chance of showers and thunderstorms late this evening. Waves 2 to 4 feet. .WEDNESDAY...Northwest winds 15 to 20 knots diminishing to 5 to 10 knots. Waves 2 to 4 feet subsiding to 1 foot or less. .WEDNESDAY NIGHT...Northwest winds 5 to 10 knots becoming north. Waves 1 foot or less. .THURSDAY...North winds 10 knots or less becoming east. Waves 1 foot or less. .THURSDAY NIGHT...Southeast winds 10 knots or less. Waves 1 foot or less. .FRIDAY...East winds 10 knots or less becoming southeast. Waves 1 foot or less. .SATURDAY...West winds 10 knots or less becoming southwest. Waves 1 foot or less. .SUNDAY...West winds around 10 knots. A chance of showers and thunderstorms. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. $$ LEZ164>167-220830- The Islands to Vermilion OH beyond 5 nm off shoreline to US- Canadian border- Vermilion to Avon Point OH beyond 5 nm off shoreline to US- Canadian border- Avon Point to Willowick OH beyond 5 nm off shoreline to US- Canadian border-Willowick to Geneva-on-the- Lake OH beyond 5NM off shoreline to US-Canadian border- 947 PM EDT Tue Jul 21 2026 .REST OF TONIGHT...Northwest winds 15 to 20 knots. A chance of showers and thunderstorms, then a slight chance of showers late. Waves 3 to 6 feet. .WEDNESDAY...Northwest winds 15 to 20 knots diminishing to 10 to 15 knots. A slight chance of showers through early afternoon. Waves 3 to 5 feet subsiding to 1 to 3 feet. .WEDNESDAY NIGHT...Northwest winds 5 to 15 knots becoming north. Waves 1 to 3 feet. .THURSDAY...North winds 10 knots or less. Waves 1 foot or less. .THURSDAY NIGHT...East winds 10 knots or less becoming southeast. Waves 1 foot or less. .FRIDAY...East winds 10 knots or less becoming southeast. Waves 1 foot or less. .SATURDAY...West winds 10 knots or less becoming southwest. Waves 1 foot or less. .SUNDAY...Southwest winds 10 to 15 knots. A chance of showers during the day, then showers likely with a chance of thunderstorms Sunday night. Waves 1 to 3 feet. Winds and waves higher in and near thunderstorms. $$ LEZ061-168-169-220830- Ripley to Buffalo NY extending from 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- 947 PM EDT Tue Jul 21 2026 .REST OF TONIGHT...West winds 15 to 20 knots becoming northwest. A chance of showers and thunderstorms late this evening, then a chance of showers with a slight chance of thunderstorms after midnight. A slight chance of showers late. Waves 3 to 5 feet. .WEDNESDAY...Northwest winds 15 to 20 knots diminishing to 10 to 15 knots. A slight chance of showers. Waves 3 to 5 feet subsiding to 2 to 4 feet. .WEDNESDAY NIGHT...Northwest winds 5 to 15 knots. Waves 1 to 3 feet. .THURSDAY...Northwest winds 10 knots or less becoming west. Waves 1 foot or less. .THURSDAY NIGHT...Southwest winds less than 10 knots becoming southeast. Waves 1 foot or less. .FRIDAY...Southeast winds 10 knots or less. Waves 1 foot or less. .SATURDAY...South winds 10 knots or less. Waves 1 foot or less. .SUNDAY...Southwest winds 5 to 15 knots. A chance of showers during the day, then showers likely with a chance of thunderstorms Sunday night. Waves 1 to 3 feet. Winds and waves higher in and near thunderstorms. $$ LEZ161-220830- MAFOR 2203/ ERIE WEST 1/3 11730 13720 11710 13700. A chance of showers and thunderstorms late this evening, then a chance of showers overnight. Waves 2 to 4 feet building to 3 to 5 feet overnight. Waves 3 to 5 feet subsiding to 1 to 3 feet Wednesday. Waves 2 feet or less Wednesday evening. ERIE CENTRAL 1/3 14720 14710. A chance of showers and thunderstorms late this evening, then a chance of showers overnight. Waves 2 to 4 feet building to 3 to 6 feet overnight. Waves 3 to 5 feet subsiding to 1 to 3 feet Wednesday. Waves 1 to 3 feet Wednesday evening. ERIE EAST 1/3 14720 12610 12710. A chance of showers late this evening. Waves 3 to 5 feet overnight. Waves 3 to 5 feet subsiding to 2 to 4 feet Wednesday. Waves 2 to 3 feet Wednesday evening. $$