Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
586 FZUS53 KLOT 220301 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 1001 PM CDT Tue May 21 2024 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>742-220930- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 1001 PM CDT Tue May 21 2024 ...GALE WARNING IN EFFECT UNTIL 4 AM CDT WEDNESDAY... .REST OF TONIGHT...South gales to 35 kt becoming southwest winds to 30 kt late. Chance of showers and thunderstorms. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. .WEDNESDAY...Southwest winds 15 to 25 kt becoming west 15 to 20 kt. Partly cloudy in the morning then clearing. Waves 1 to 3 ft. .WEDNESDAY NIGHT...West winds 10 to 15 kt diminishing to 5 to 10 kt. Mostly clear. Waves around 1 ft. .THURSDAY...Southwest winds 5 to 10 kt becoming southeast 10 to 15 kt in the afternoon. Sunny. Waves around 1 ft. $$ LMZ743>745-220930- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 1001 PM CDT Tue May 21 2024 ...GALE WARNING IN EFFECT UNTIL 4 AM CDT WEDNESDAY... .REST OF TONIGHT...Southwest gales to 35 kt becoming southwest winds to 30 kt. Chance of showers and thunderstorms. Waves 2 to 4 ft. .WEDNESDAY...Southwest winds 10 to 20 kt becoming west. Partly cloudy in the morning then clearing. Waves 1 to 3 ft. .WEDNESDAY NIGHT...West winds 10 to 15 kt diminishing to 5 to 10 kt. Mostly clear. Waves around 1 ft. .THURSDAY...South winds 5 to 10 kt becoming southeast in the afternoon. Sunny. Waves 1 ft or less. $$ KMD