NATIONAL WEATHER SERVICE MARQUETTE MI
9:46 PM Tuesday July 29
W2SYNOPSIS, A 298 INCH LOW OVER SOUTHERN QUEBEC WILL ENABLE A 299 INCH TROUGH OF LOW PRESSURE TO MOVE INTO THE LOWER LAKES BY WEDNESDAY MORNING.W2 THIS TROUGH WILL BE REPLACED BY A RIDGE EXTENDING FROM A LARGER AREA OF 302 INCH HIGH PRESSURE ACROSS THE NORTHERN PLAINS.W2 ANOTHER WEAK 299 INCH TROUGH WILL SLIP ACROSS LAKE SUPERIOR FROM THE NORTH LATE WEDNESDAY THROUGH THURSDAY.W2 LOOK FOR A 301 INCH HIGH PRESSURE SYSTEM TO BUILD OVER LAKE SUPERIOR LATE FRIDAY THROUGH SATURDAY, AS THE TROUGH DRIFTS TOWARD THE UPPER GREAT LAKES.W2 ANOTHER WEAK 300 INCH TROUGH OF LOW PRESSURE WILL SINK ACROSS LAKE SUPERIOR ON SUNDAY.W2 LSZ162-301000.W2 LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND PORTAGE MN BEYOND 5 NORTHM.W2 rest of tonight, northwest winds 5 to 15 knots backing west after midnight.W2 isolated showers through midnight.W2 waves calm to 2 feet.W2 wednesday, west winds 5 to 15 knots backing southwest by mid afternoon.W2 a slight chance of showers and thunderstorms by mid afternoon.W2 waves calm to 2 feet.W2 wednesday night, northwest winds less than 10 knots becoming north 5 to 15 knots after midnight.W2 waves calm to 2 feet.W2 thursday, west winds less than 10 knots backing south by mid afternoon.W2 a slight chance of showers and thunderstorms by mid afternoon.W2 waves calm to 2 feet.W2 thursday night, east winds less than 10 knots backing northeast after midnight.W2 waves calm to 2 feet.W2 friday, northeast winds less than 10 knots veering east by mid afternoon.W2 waves calm to 2 feet.W2 friday night, southwest winds 5 to 15 knots veering west after midnight.W2 waves calm to 2 feet.W2 saturday, west winds 5 to 15 knots backing southwest.W2 waves calm to 2 feet.W2 sunday, west winds 5 to 15 knots veering north.W2 waves calm to 2 feet.W2