National Weather Service Marquette MI
4:04 PM Monday August 21.
occasional wave height is the average of the highest 1/10 of the wave spectrum. synopsis, 30.0 high pressure over northwestern lake superior this evening will move across the upper great lakes tonight. low pressure of 29.8 inches over the central plains will move through northern lake huron by early tuesday. a 30.2 inch high pressure extending from manitoba to nebraska tuesday night will move over wisconsin thursday morning and remain over the great lakes through friday and into saturday.