NATIONAL WEATHER SERVICE MARQUETTE MI
3:50 PM Monday October 20
W2SYNOPSIS, AS LOW PRESSURE OF 298 INCHES MOVES FROM LAKE HURON TO LAKE ONTARIO TONIGHT THROUGH TUESDAY MORNING, EXPECT A BROAD HIGH PRESSURE RIDGE OF 301 INCHES TO STRETCH FROM MANITOBA TO THE CENTRAL PLAINS.W2 THIS HIGH WILL BUILD TO 303 INCHES AS IT STRETCHES FROM QUEBEC TO THE UPPER GREAT LAKES BY TUESDAY AFTERNOON.W2 THE RIDGE OVER LAKE SUPERIOR WILL REMAIN NEARLY STATIONARY THROUGH WEDNESDAY AS THE MAIN AREA OF HIGH PRESSURE BUILDS TO 305 INCHES OVER QUEBEC.W2 EXPECT THE RIDGE OVER LAKE SUPERIOR TO WEAKEN TO 300 INCHES BY FRIDAY WHILE LOW PRESSURE OF 294 INCHES SLOWLY MOVES FROM THE MID ATLANTIC COAST TOWARD NOVA SCOTIA.W2 THIS LOW WILL DEEPEN TO 302 INCHES AS IT SHIFTS EASTWARD TO HUDSON BAY ON SATURDAY, PLACING A TROUGH OF 298 INCHES OVER LAKE SUPERIOR.W2 LSZ162-210400.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 waves calm to 2 feet.W2 tonight, northeast winds 10 to 20 knots.W2 waves building to 2 to 4 feet.W2 tuesday, east winds 10 to 20 knots.W2 waves subsiding to 1 to 3 feet.W2 tuesday night, east winds 5 to 15 knots veering south after midnight.W2 waves 1 to 3 feet.W2 wednesday, south winds 10 to 20 knots diminishing to 5 to 15 knots by mid afternoon.W2 waves subsiding to calm to 2 feet.W2 wednesday night, south winds 10 to 20 knots.W2 waves building to 1 to 3 feet.W2 thursday, south winds 5 to 15 knots.W2 a chance of rain showers.W2 waves subsiding to calm to 2 feet.W2 thursday night, south winds 5 to 15 knots veering southwest after midnight.W2 waves calm to 2 feet.W2 friday, southwest winds 5 to 15 knots veering west.W2 waves building to 1 to 3 feet.W2 saturday, west winds 10 to 20 knots diminishing to 5 to 15 knots.W2 waves subsiding to calm to 2 feet, then building to 1 to 3 feet.W2