National Weather Service Chicago/Romeoville IL
8:03 AM Monday April 23.
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 30.4 inches over new england has
ridging extending west across the great lakes. low pressure of
29.7 inches is over western tennessee and will meander over the
area through tuesday then shift to the mid atlantic coast by early
wednesday. a cold front will move across lake michigan tuesday
night. another 30.4 inch high will build across the central plains
tuesday night with a ridge extending into the western great
lakes, which will shift to the ohio valley thursday. low pressure
of 29.5 inches will move from hudson bay wednesday night to
northern quebec thursday night as a trailing cold front pushes
across lake michigan.