LMZ741 Expires:202405211530;;591139 Fzus53 Klot 210918 Nshlot
nearshore marine forecast national weather service chicago/romeoville il 418 am 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.
lmz740-741-211530- winthrop harbor to wilmette harbor il- wilmette harbor to northerly island il- 418 am cdt Tue may 21 2024
.dense fog advisory in effect until 11 am cdt this morning...
.small craft advisory in effect from 3 pm cdt this afternoon through late tonight...
Today..Southeast winds 5 to 10 kt increasing to 10 to 15 kt this morning, then becoming south 20 to 25 kt late this afternoon. Dense fog this morning with visibilities one quarter mile or less. Becoming partly cloudy this afternoon. Waves around 1 ft building to 1 to 3 ft.
Tonight..South winds to 30 kt with occasional gale force gusts to 35 kt becoming southwest after midnight, then diminishing to 15 to 25 kt toward Sunrise. Showers and Thunderstorms in the evening. Some Thunderstorms may be severe with wind gusts over 50 kt. Waves 3 to 5 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. Mostly clear. Waves around 1 ft.