Issued by NWS
000 FZUS63 KMQT 060146 GLFLS OPEN LAKE FORECAST FOR LAKE SUPERIOR NATIONAL WEATHER SERVICE MARQUETTE MI 946 PM EDT SUN OCT 5 2008 FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR .SYNOPSIS...THERE ARE TWO MAIN SYSTEMS OF IMPORTANCE...A 30.4 INCH HIGH PRESSURE OVER WESTERN JAMES BAY...AND 29.5 INCH LOW PRESSURE OVER WESTERN SOUTH DAKOTA. THE HIGH WILL FILL TO 30.5 AS IT MOVES TO LAKE ONTARIO BY TUESDAY MORNING. IN THE MEANTIME...THE LOW PRESSURE SYSTEM WILL WEAKEN TO 29.9 INCHES OVER MINNESOTA AND IOWA. EXPECT A SECONDARY LOW PRESSURE SYSTEM OF 29.5 INCHES OVER SASKATCHEWAN EARLY WEDNESDAY TO DRAG A 29.7 INCH TROUGH OF LOW PRESSURE OVER LAKE SUPERIOR DURING THE DAY WEDNESDAY. ON THURSDAY...THE LOW WILL HAVE DEEPENED TO 29.3 INCHES OVER WESTERN HUDSON BAY. A 30.1 INCH HIGH PRESSURE OVER THE CENTRAL PLAINS WILL THEN BUILD INTO THE GREAT LAKES REGION FRIDAY. LSZ162-060830- LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND PORTAGE MN BEYOND 5NM- 946 PM EDT SUN OCT 5 2008 /846 PM CDT SUN OCT 5 2008/ .REST OF TONIGHT...EAST WINDS TO 30 KNOTS. A CHANCE OF SHOWERS. WAVES 5 TO 9 FEET. .MONDAY...SOUTHEAST WINDS TO 30 KNOTS DIMINISHING TO 15 TO 25 KNOTS BY EARLY AFTERNOON...THEN BACKING EAST LATE. A CHANCE OF SHOWERS. WAVES SUBSIDING TO 4 TO 7 FEET. .MONDAY NIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO 20 KNOTS BY MIDNIGHT...THEN VEERING SOUTH LATE. A SLIGHT CHANCE OF SHOWERS. WAVES SUBSIDING TO 3 TO 5 FEET. .TUESDAY...SOUTH WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 5 TO 15 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS THROUGH EARLY AFTERNOON...THEN SHOWERS LIKELY BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET. .TUESDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES CALM TO 2 FEET. .WEDNESDAY...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS. WAVES CALM TO 2 FEET. .WEDNESDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET. .THURSDAY...WEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET. .FRIDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES CALM TO 2 FEET. $$ LSZ263-060830- LAKE SUPERIOR FROM SAXON HARBOR WI TO UPPER ENTRANCE TO PORTAGE CANAL MI 5NM OFF SHORE TO THE US/CANADIAN BORDER INCLUDING ISLE ROYALE NATIONAL PARK- 946 PM EDT SUN OCT 5 2008 .REST OF TONIGHT...EAST WINDS TO 30 KNOTS VEERING SOUTHEAST AFTER MIDNIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES 5 TO 8 FEET. .MONDAY...SOUTHEAST WINDS TO 30 KNOTS DIMINISHING TO 15 TO 25 KNOTS LATE. A CHANCE OF SHOWERS. WAVES 5 TO 8 FEET. .MONDAY NIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS VEERING SOUTH LATE. A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES 5 TO 8 FEET. .TUESDAY...SOUTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO 20 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS THROUGH EARLY AFTERNOON...THEN SHOWERS LIKELY BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET. .TUESDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET. .WEDNESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS. WAVES CALM TO 2 FEET. .WEDNESDAY NIGHT...WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 5 FEET. .THURSDAY...WEST WINDS 15 TO 25 KNOTS. WAVES 3 TO 6 FEET. .FRIDAY...WEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET. $$ LSZ264-060830- LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER- 946 PM EDT SUN OCT 5 2008 .REST OF TONIGHT...EAST WINDS TO 30 KNOTS VEERING SOUTHEAST AFTER MIDNIGHT. WAVES 2 TO 4 FEET BUILDING TO 4 TO 6 FEET. .MONDAY...SOUTHEAST WINDS TO 30 KNOTS. A SLIGHT CHANCE OF SHOWERS BY MID AFTERNOON. WAVES BUILDING TO 6 TO 9 FEET. .MONDAY NIGHT...SOUTHEAST WINDS TO 30 KNOTS VEERING SOUTH LATE. WAVES 5 TO 9 FEET. .TUESDAY...SOUTH WINDS 15 TO 25 KNOTS. A CHANCE OF SHOWERS. WAVES 5 TO 8 FEET. .TUESDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 5 TO 15 KNOTS AFTER MIDNIGHT. SHOWERS LIKELY THROUGH MIDNIGHT...THEN A CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET. .WEDNESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET. .WEDNESDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO 25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 5 FEET. .THURSDAY...WEST WINDS 15 TO 25 KNOTS INCREASING TO 30 KNOTS. WAVES BUILDING TO 4 TO 6 FEET. .FRIDAY...WEST WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET. $$ LSZ265-060830- LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI BEYOND 5NM FROM SHORE- 946 PM EDT SUN OCT 5 2008 .REST OF TONIGHT...EAST WINDS 15 TO 25 KNOTS BECOMING SOUTHEAST TO 30 KNOTS AFTER MIDNIGHT. WAVES 2 TO 4 FEET BUILDING TO 4 TO 6 FEET. .MONDAY...SOUTHEAST WINDS TO 30 KNOTS. A SLIGHT CHANCE OF SHOWERS. WAVES BUILDING TO 4 TO 7 FEET. .MONDAY NIGHT...SOUTHEAST WINDS TO 30 KNOTS VEERING SOUTH AFTER MIDNIGHT. WAVES BUILDING TO 5 TO 8 FEET. .TUESDAY...SOUTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO 20 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS BY MID AFTERNOON. WAVES SUBSIDING TO 4 TO 7 FEET. .TUESDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 5 TO 15 KNOTS AFTER MIDNIGHT. SHOWERS LIKELY THROUGH MIDNIGHT...THEN A CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET. .WEDNESDAY...SOUTHWEST WINDS LESS THAN 10 KNOTS INCREASING TO 5 TO 15 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS. WAVES CALM TO 2 FEET. .WEDNESDAY NIGHT...WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS THROUGH MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET. .THURSDAY...WEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 2 TO 4 FEET. .FRIDAY...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET. $$ LSZ266-267-060830- LAKE SUPERIOR EAST OF A LINE FROM MANITOU ISLAND TO MARQUETTE MI AND WEST OF A LINE FROM GRAND MARAIS MI TO THE US/CANADIAN BORDER BEYOND 5NM FROM SHORE- LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF SHORE TO THE US/CANADIAN BORDER- 946 PM EDT SUN OCT 5 2008 .REST OF TONIGHT...EAST WINDS 15 TO 25 KNOTS BECOMING SOUTHEAST TO 30 KNOTS LATE. WAVES 2 TO 4 FEET BUILDING TO 4 TO 6 FEET. .MONDAY...SOUTHEAST WINDS TO 30 KNOTS DIMINISHING TO 15 TO 25 KNOTS LATE. A SLIGHT CHANCE OF SHOWERS BY MID AFTERNOON. WAVES BUILDING TO 5 TO 8 FEET. .MONDAY NIGHT...SOUTHEAST WINDS TO 30 KNOTS VEERING SOUTH LATE. WAVES BUILDING TO 6 TO 9 FEET. .TUESDAY...SOUTH WINDS TO 30 KNOTS DIMINISHING TO 15 TO 25 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS BY MID AFTERNOON. WAVES SUBSIDING TO 5 TO 8 FEET. .TUESDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES SUBSIDING TO 3 TO 5 FEET. .WEDNESDAY...SOUTH WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET. .WEDNESDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS VEERING WEST AFTER MIDNIGHT. A CHANCE OF SHOWERS THROUGH MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET. .THURSDAY...WEST WINDS TO 30 KNOTS DIMINISHING TO 15 TO 25 KNOTS. WAVES BUILDING TO 4 TO 6 FEET. .FRIDAY...SOUTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET. $$ LSZ261-060830- MAFOR 0603/ SUPERIOR WEST 12240 13340 13330. CHANCE OF SHOWERS OVERNIGHT AND MONDAY. SLIGHT CHANCE OF SHOWERS MONDAY EVENING. WAVES 5 TO 10 FEET OVERNIGHT AND MONDAY. WAVES 4 TO 6 FEET MONDAY EVENING. 220609. SUPERIOR NORTH CENTRAL 11230 15340 11340. WAVES 2 TO 6 FEET OVERNIGHT. WAVES 5 TO 9 FEET MONDAY AND MONDAY EVENING. 210204 210305. SUPERIOR SOUTH CENTRAL 11230 11330 15340. SLIGHT CHANCE OF SHOWERS MONDAY AFTERNOON. WAVES 2 TO 6 FEET OVERNIGHT. WAVES 4 TO 7 FEET MONDAY AND MONDAY EVENING. 220205. SUPERIOR EAST 12230 11330 14340 11340. WAVES 2 TO 6 FEET. 220204. $$ SRF
