![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
517 FZUS61 KBUF 050821 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 421 AM EDT Fri Jul 5 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 weak 29.7 inch low over lower Michigan this morning will move across the lower Great Lakes through Saturday before moving down the Saint Lawrence Valley and dissipating Sunday. A cold front from this area of low pressure will cross the Lake late Friday night. A 30.1 inch high will then build into the Ohio Valley and New England Sunday night through Monday before drifting off the east coast Tuesday. A 29.7 inch area of low pressure will lift across the Central Great Lakes Tuesday night, with a warm front extending towards the Lake. As this low moves across southern Quebec Wednesday a cold front will cross the Lake early in the day. LOZ062-051500- Lake Ontario open waters from the Niagara River to Hamlin Beach- 421 AM EDT Fri Jul 5 2024 .TODAY...North winds 10 knots or less becoming east. Waves 1 foot or less. .TONIGHT...East winds 10 knots or less becoming south. A chance of showers and thunderstorms. Waves 1 foot or less. .SATURDAY...Southeast winds 10 knots or less becoming southwest. Waves 1 foot or less. .SATURDAY NIGHT...Southwest winds 5 to 10 knots becoming west. Waves 1 to 2 feet. .SUNDAY...West winds 10 knots or less becoming south. Waves 1 foot or less. .MONDAY...Light and variable winds. Waves 1 foot or less. .TUESDAY...Southeast winds 10 knots or less becoming southwest 10 to 15 knots. A chance of showers and thunderstorms. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. $$ LOZ063>065-051500- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 421 AM EDT Fri Jul 5 2024 .TODAY...Light and variable winds. Waves 1 foot or less. .TONIGHT...Northeast winds less than 10 knots becoming south. A chance of showers and thunderstorms early, then showers likely with a chance of thunderstorms from late evening on. Waves 1 foot or less. .SATURDAY...South winds 10 knots or less becoming west. A chance of showers and thunderstorms in the morning. Waves 1 foot or less. .SATURDAY NIGHT...West winds 5 to 15 knots becoming southwest. Waves 2 feet or less. .SUNDAY...West winds 10 knots or less becoming south. Waves 2 feet or less. .MONDAY...Southeast winds less than 10 knots. Waves 1 foot or less. .TUESDAY...Southeast winds 10 knots or less becoming southwest 10 to 15 knots. A chance of showers and thunderstorms during the day, then showers likely with a chance of thunderstorms Tuesday night. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. $$ LOZ061-051500- MAFOR 0509/ ONTARIO WEST 1/2 11800 11100 14200 12400. A chance of showers and thunderstorms tonight. Waves 1 foot or less. ONTARIO EAST 1/2 11300 11200 13100 11200 11300 11400. A chance of showers and thunderstorms tonight. Waves 1 foot or less. $$