National Weather Service Marquette MI
3:47 PM Wednesday August 16.
occasional wave height is the
average of the highest 1/10 of the wave spectrum.
synopsis, low pressure of 29.6 inches over the central plains
will track across the upper great lakes on thursday and reach
southwest quebec friday night. in its wake, high pressure of 30.0
inches will shift east to the western great lakes late friday and
then expand over the great lakes region saturday into sunday.