NATIONAL WEATHER SERVICE MARQUETTE MI
3:45 PM Thursday July 31
W2SYNOPSIS, A LOW PRESSURE TROUGH AVERAGING 300 INCHES WILL LINGER OVER THE UPPER GREAT LAKES INTO FRIDAY, EXTENDING FROM A BROAD 298 INCH AREA OF LOW PRESSURE NEAR JAMES BAY.W2 A 301 INCH HIGH PRESSURE WILL BUILD OVER LAKE SUPERIOR BEGINNING FRIDAY AFTERNOON AND THEN REMAIN THROUGH SATURDAY.W2 AS THIS HIGH SINKS INTO THE LOWER GREAT LAKES ON SUNDAY, A LOW PRESSURE TROUGH AVERAGING 300 INCHES WILL CROSS THE UPPER GREAT LAKES.W2 HIGH PRESSURE OF 302 INCHES OVER SOUTHERN MANITOBA SUNDAY EVENING WILL SLOWLY MOVE OVER LAKE SUPERIOR MONDAY EVENING INTO TUESDAY, WHILE WEAKENING TO 301 INCHES.W2 LSZ162-010345.W2 LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND PORTAGE MN BEYOND 5 NORTHM.W2 late this afternoon, southwest winds 5 to 15 knots.W2 waves calm to 2 feet.W2 tonight, west winds 5 to 15 knots becoming northeast less than 10 knots after midnight.W2 waves calm to 2 feet.W2 friday, northeast winds 5 to 15 knots veering east by mid afternoon.W2 waves calm to 2 feet.W2 friday night, east winds 5 to 15 knots becoming southwest less than 10 knots after midnight.W2 patchy fog after midnight.W2 waves calm to 2 feet.W2 saturday, southwest winds 5 to 15 knots backing south by mid afternoon.W2 patchy fog.W2 waves calm to 2 feet.W2 saturday night, south winds 5 to 15 knots veering west after midnight.W2 patchy fog.W2 a chance of showers and thunderstorms.W2 waves calm to 2 feet.W2 sunday, west winds 5 to 15 knots veering northwest by mid afternoon.W2 patchy fog.W2 waves calm to 2 feet.W2 sunday night, north winds 5 to 15 knots veering northeast after midnight.W2 patchy fog.W2 waves calm to 2 feet.W2 monday, northeast winds 5 to 15 knots.W2 patchy fog.W2 waves calm to 2 feet.W2 tuesday, northeast winds 5 to 15 knots veering east.W2 waves calm to 2 feet.W2