NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
4:47 PM Wednesday July 23
W2.UPDATED NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL for waters beyond five nautical miles of shore on lake michigan.W2 waves are provided as a range of significant wave heights, which is the average height of the highest 1/3 of the waves, along with the average height of the highest 10 percent of the waves which will occasionally be encountered.W2 synopsis, high pressure of 303 inches over the canadian prairies extends south into the northern plains.W2 the high will begin building over lake michigan by late tonight and then move to the south of lake michigan by thursday night.W2 meanwhile, another low of 294 inches will move across the canadian prairies thursday night, weakening to 297 inches saturday as it drifts over the northern lakes, then spreads into the eastern great lakes on sunday.W2 high pressure of 302 inches builds back into the northern plains on monday.W2 lmz261-362-364-366-563-565-240315- lake michigan from seul choix point to rock island passage 5 nautical miles offshore to mid lake- lake michigan south of a line from seul choix point to the mackinac bridge and north of a line from charlevoix mi to south fox island 5 nautical miles offshore- lake michigan from charlevoix to point betsie mi 5 nautical miles offshore to mid lake- lake michigan from point betsie to manistee mi 5 nautical miles offshore to mid lake- lake michigan from rock island passage to sturgeon bay wi- lake michigan from sturgeon bay to two rivers wi 5 nautical miles offshore to mid lake- 4:47 pm wednesday july 23 two rivers wi to manistee mi north tonight, north winds 10 to 15 knots becoming northwest 5 to 10 knots.W2 waves 2 to 4 feet subsiding to 1 to 3 feet.W2 thursday, northwest winds 5 to 10 knots backing to southwest 10 to 20 knots.W2 waves 1 to 3 feet.W2 thursday night, southwest winds 10 to 15 knots.W2 waves 1 to 3 feet.W2 friday, southwest winds 15 to 25 knots.W2 waves 2 to 4 feet.W2 friday night, south winds 10 to 20 knots.W2 slight chance of showers and thunderstorms.W2 waves 2 to 4 feet.W2 saturday, southwest winds 10 to 15 knots.W2 chance of showers and thunderstorms.W2 waves 1 to 2 feet.W2 saturday night, southwest winds 5 to 10 knots.W2 chance of showers and thunderstorms.W2 waves 1 to 2 feet.W2 sunday, west winds 10 to 15 knots becoming northwest 10 to 20 knots.W2 showers and thunderstorms likely.W2 waves 1 to 3 feet.W2 monday, north winds 15 to 25 knots.W2 waves 2 to 4 feet.W2