National Weather Service Chicago/Romeoville IL
2:42 AM Thursday May 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 30.2 inches is over lower michigan
early this morning. the high will shift to the upper ohio valley
today then to the mid atlantic coast tonight. low pressure of 29.5
inches will move from manitoba thursday night into the upper
midwest saturday then to lake michigan sunday at 29.8 inches. a
30.0 inch high will build into the western great lakes monday and