National Weather Service Marquette MI
10:02 PM Wednesday April 25.
waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.
synopsis, a ridge of 30.0 inches will exit the upper great
lakes overnight, followed by a weak trough of 29.8 inches on
thursday. on friday, a low of 29.8 inches will track across the
upper great lakes region. this low will track into quebec and
merge with another area of low pressure, deepening to 29.3 inches
on saturday. behind this low pressure system, high pressure of
30.0 inches will drop into the northern plains. by sunday, this
high pressure will strengthen to 30.3 inches as it tracks across