![National Oceanic and Atmospheric Administration](/build/images/header/noaa.d87e0251.png)
![National Weather Service](/build/images/header/nws.4e6585d8.png)
![United States Department of Commerce](/build/images/header/doc.b38ba91a.png)
Great Lakes Forecast
Issued by NWS
Issued by NWS
Versions:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
583 FZUS61 KBUF 291941 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 341 PM EDT Sat Jun 29 2024 For waters beyond five nautical miles of shore on Lake Ontario 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 29.6 inch low will move to central Quebec by tonight and in the process push a cold front across the lake. A 30.3 inch high over the Upper Mississippi valley Sunday afternoon will build gradually east across the Great Lakes Sunday night through Monday night. The high will then cross New England on Tuesday before moving off the East coast Tuesday night and Wednesday. A cold front extending from a 29.4 inch low near Hudson Bay will move across the lake Wednesday night. LOZ062-300315- Lake Ontario open waters from the Niagara River to Hamlin Beach- 341 PM EDT Sat Jun 29 2024 .TONIGHT...Southwest winds 15 to 20 knots diminishing to 10 to 15 knots. Showers likely with a chance of thunderstorms early, then a chance of showers and thunderstorms late this evening. A chance of showers after midnight. Waves 3 to 5 feet subsiding to 2 to 4 feet. .SUNDAY...West winds 15 to 20 knots. Waves 2 to 4 feet building to 3 to 5 feet. .SUNDAY NIGHT...Northwest winds 15 to 20 knots becoming north 10 to 15 knots. Waves 3 to 5 feet subsiding to 2 to 4 feet. .MONDAY...North winds 5 to 15 knots becoming southwest. Waves 1 to 3 feet subsiding to 1 foot or less. .MONDAY NIGHT...West winds 10 knots or less becoming southwest. Waves 1 foot or less. .TUESDAY...South winds 10 knots or less increasing to 10 to 15 knots. Waves 2 feet or less. .WEDNESDAY...South winds 10 to 15 knots becoming southwest. A chance of showers and thunderstorms. Waves 1 to 3 feet building to 2 to 4 feet, then subsiding to 1 to 3 feet. .THURSDAY...West winds 5 to 10 knots becoming northeast. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. $$ LOZ063>065-300315- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 341 PM EDT Sat Jun 29 2024 .TONIGHT...South winds 15 to 20 knots becoming southwest 10 to 15 knots. Showers with a chance of thunderstorms this evening, then a chance of showers and thunderstorms after midnight. Waves 3 to 6 feet subsiding to 1 to 3 feet. .SUNDAY...Southwest winds 15 to 20 knots becoming west. A chance of showers and thunderstorms early, then a chance of showers from late morning on. Waves 1 to 3 feet building to 3 to 6 feet. .SUNDAY NIGHT...Northwest winds 15 to 20 knots becoming north 10 to 15 knots. A chance of showers. Waves 3 to 6 feet subsiding to 2 to 4 feet. .MONDAY...North winds 5 to 15 knots becoming west. Waves 1 to 3 feet. .MONDAY NIGHT...West winds 10 knots or less becoming southwest. Waves 1 foot or less. .TUESDAY...South winds 10 knots or less increasing to 15 to 20 knots. Waves 1 to 3 feet. .WEDNESDAY...South winds 15 to 20 knots becoming southwest 10 to 15 knots. A chance of showers and thunderstorms during the day, then showers likely with a chance of thunderstorms Wednesday night. Waves 2 to 4 feet subsiding to 1 to 3 feet. .THURSDAY...West winds 5 to 10 knots becoming southwest. A chance of showers during the day. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. $$ LOZ061-300315- MAFOR 2921/ ONTARIO WEST 1/2 11526 11520 12510 11610 13620. A chance of thunderstorms this evening. Waves 3 to 5 feet subsiding to 2 to 4 feet tonight. Waves 2 to 4 feet building to 3 to 5 feet Sunday. ONTARIO EAST 1/2 11436 11520 13510 13620. A chance of thunderstorms tonight and Sunday morning. Waves 3 to 6 feet subsiding to 1 to 3 feet tonight. Waves 1 to 3 feet building to 3 to 6 feet Sunday. $$