Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
329 FZUS53 KLOT 301947 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 247 PM CDT Tue Apr 30 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>742-010300- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 247 PM CDT Tue Apr 30 2024 ...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM CDT THIS EVENING THROUGH WEDNESDAY EVENING... .TONIGHT...Southeast winds 10 to 15 kt becoming south 20 to 25 kt by midnight then southwest overnight. A few gale gusts to 35 kt possible after midnight. Chance of showers and slight chance of thunderstorms after midnight. Waves 1 to 2 ft building to 2 to 4 ft. .WEDNESDAY...Southwest winds 20 to 25 kt becoming west in the morning. Mostly sunny. Waves 2 to 4 ft subsiding to 1 to 3 ft. .WEDNESDAY NIGHT...North winds 5 to 10 kt becoming northeast overnight. Chance of showers and slight chance of thunderstorms overnight. Waves 1 to 2 ft. .THURSDAY...East winds 10 to 20 kt. Chance of showers. Chance of thunderstorms in the afternoon. Waves building to 2 to 4 ft. $$ LMZ743>745-010300- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 247 PM CDT Tue Apr 30 2024 ...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM CDT THIS EVENING THROUGH WEDNESDAY AFTERNOON... .TONIGHT...East winds around 10 kt becoming southeast 10 to 20 kt this evening then southwest 20 to 25 kt after midnight. Slight chance of showers and thunderstorms after midnight. Waves around 1 ft building to 1 to 3 ft. .WEDNESDAY...Southwest winds 20 to 25 kt becoming west 10 to 20 kt by early afternoon then north 10 to 15 kt by late afternoon. Partly cloudy in the morning then clearing. Waves 1 to 3 ft. .WEDNESDAY NIGHT...North winds 5 to 10 kt becoming northeast overnight. Slight chance of showers and thunderstorms overnight. Waves 1 to 2 ft. .THURSDAY...East winds 10 to 15 kt becoming southeast 15 to 20 kt in the afternoon. Chance of showers. Chance of thunderstorms in the afternoon. Waves 1 to 3 ft. $$