National Weather Service Chicago/Romeoville IL
9:00 PM Monday July 24.
waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.
synopsis, high pressure of 30.1 inches over lake michigan will
slowly move east reaching the eastern great lakes by tuesday
night. low pressure of 29.5 inches will move east to james bay on
wednesday, with a trailing trough moving over the lake wednesday
night. low pressure around 29.7 inches is expected to develop on
this trough by late wednesday night, shifting a cold front south
across the lake by thursday morning. high pressure of 30.1 inches
will follow, building over the lake for the weekend.