National Weather Service Marquette MI
4:02 PM Wednesday June 28.
occasional wave height is the average of the highest 1/10 of the wave spectrum. synopsis, 29.5 inch low pressure over central minnesota this afternoon will track eastward across lake superior late tonight through thursday morning. a 29.7 inch trough will then linger over the upper great lakes into saturday night. the trough will lift to the northeast on sunday ahead of a 30.0 inch ridge building across the upper mississippi valley and western great lakes monday into tuesday.