


Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
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
009 FZUS53 KLOT 040803 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 303 AM CDT Fri Apr 4 2025 For waters within five nautical miles of shore on Lake Michigan Waves are provided as a range of significant wave heights, which is the average of the highest 1/3 of the waves, along with the average height of the highest 10 percent of the waves which will occasionally be encountered. LMZ740>742-042145- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 303 AM CDT Fri Apr 4 2025 .TODAY...Northeast winds less than 10 kt in the early morning becoming east 10 to 15 kt by late morning. Waves around 1 ft building to 1 to 3 ft. .TONIGHT...Northeast winds 15 to 20 kt becoming north late. Showers with isolated thunderstorms. Waves 2 to 4 ft. .SATURDAY...North winds 15 to 20 kt. Isolated showers in the morning. Waves 2 to 4 ft. .SATURDAY NIGHT...North winds 15 to 20 kt. Mostly cloudy. Waves 2 to 4 ft. $$ LMZ743>745-042145- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 303 AM CDT Fri Apr 4 2025 .TODAY...Northeast winds less than 10 kt in the early morning increasing to 10 to 15 kt by late morning. Waves 1 to 2 ft. .TONIGHT...Northeast winds 15 to 20 kt becoming north late. Showers with isolated thunderstorms. Waves 1 to 3 ft building to 2 to 4 ft. .SATURDAY...North winds 10 to 15 kt. Isolated showers. Waves 2 to 4. .SATURDAY NIGHT...North winds 15 to 25 kt. Slight chance of showers in the evening. Waves 3 to 5 ft. A small craft advisory may be needed. $$ Borchardt