NATIONAL WEATHER SERVICE MARQUETTE MI
3:58 PM Tuesday July 29
W2SYNOPSIS, A WEAK 299 INCH TROUGH OF LOW PRESSURE ACROSS EASTERN LAKE SUPERIOR WILL BE REPLACED BY A RIDGE EXTENDING FROM A LARGER AREA OF 301 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 LSZ162-300400.W2 LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND PORTAGE MN BEYOND 5 NORTHM.W2 late this afternoon, north winds 5 to 15 knots.W2 scattered showers and isolated thunderstorms.W2 waves calm to 2 feet.W2 tonight, northwest winds 5 to 15 knots backing west after midnight.W2 scattered showers and isolated thunderstorms 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