NATIONAL WEATHER SERVICE MARQUETTE MI
3:57 PM Saturday April 18
W2SYNOPSIS, A 303 INCH HIGH PRESSURE OVER NORTHERN ONTARIO THIS AFTERNOON WILL DRIFT EAST INTO QUEBEC ON SUNDAY.W2 MEANWHILE, 296 INCH LOW PRESSURE MOVING INTO MINNESOTA ON SUNDAY MORNING WILL MERGE WITH ANOTHER 295 INCH LOW PRESSURE SYSTEM LIFTING NORTHEAST INTO THE LOWER GREAT LAKES, RESULTING IN A DEEPER 292 INCH LOW PRESSURE NEAR THE UPPER GREAT LAKES ON MONDAY EVENING.W2 ALTHOUGH THIS LOW WILL SHIFT NORTHEAST TO NEAR JAMES BAY ON TUESDAY, A TROUGH OF LOW PRESSURE AVERAGING 295 INCHES ON ITS SOUTHWEST FLANK WILL EXTEND BACK INTO THE UPPER GREAT LAKES.W2 THESE FEATURES WILL REMAIN NEARLY STATIONARY BUT WEAKEN SLOWLY THROUGH WEDNESDAY, TO THE EAST OF A 301 INCH HIGH PRESSURE RIDGE BUILDING OVER THE NORTHERN PLAINS.W2 THE LOW WILL FINALLY SHIFT EAST ON THURSDAY, ALLOWING A 300 RIDGE TO MOVE INTO WESTERN LAKE SUPERIOR.W2 LSZ162-190400.W2 LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND PORTAGE MN BEYOND 5 NORTHM.W2 late this afternoon, northeast winds 20 to 30 knots.W2 waves 3 to 6 feet.W2 tonight, east winds 15 to 25 knots diminishing to 10 to 20 knots after midnight.W2 a chance of rain after midnight.W2 waves subsiding to 2 to 4 feet.W2 sunday, east winds 10 to 20 knots diminishing to 5 to 15 knots by mid afternoon.W2 rain likely.W2 waves subsiding to 1 to 3 feet.W2 sunday night, west winds less than 10 knots increasing to 5 to 15 knots after midnight.W2 rain likely through midnight, then a chance of rain after midnight.W2 waves subsiding to calm to 2 feet.W2 monday, west winds 10 to 20 knots increasing to 15 to 25 knots by mid afternoon.W2 a chance of rain showers.W2 waves building to 1 to 3 feet.W2 monday night, west winds 15 to 25 knots veering northwest after midnight.W2 a chance of rain showers through midnight.W2 a chance of snow showers.W2 waves 1 to 3 feet.W2 tuesday, northwest winds 20 to 30 knots diminishing to 15 to 25 knots by mid afternoon.W2 a chance of snow showers, possibly mixed with rain.W2 waves building to 2 to 4 feet, then subsiding to calm to 2 feet.W2 tuesday night, northwest winds 15 to 25 knots.W2 waves building to 1 to 3 feet.W2 wednesday, northwest winds 15 to 25 knots diminishing to 10 to 20 knots.W2 waves subsiding to calm to 2 feet.W2 thursday, northwest winds 10 to 20 knots veering north.W2 waves calm to 2 feet.W2