Issued by NWS
000 FZUS63 KMQT 080144 GLFLS OPEN LAKE FORECAST FOR LAKE SUPERIOR NATIONAL WEATHER SERVICE MARQUETTE MI 944 PM EDT TUE OCT 7 2008 FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR .SYNOPSIS...A 30.3 INCH HIGH PRESSURE OVER THE EASTERN GREAT LAKES WILL GRADUALLY MOVE OFF THE EAST COAST OVERNIGHT AND WEAKEN TO 30.2 INCHES. MEANWHILE...A COLD FRONT OVER EASTERN MINNESOTA WILL WORK ITS WAY ACROSS LAKE SUPERIOR OVERNIGHT AND WEDNESDAY. BY THURSDAY...A LOW PRESSURE SYSTEM WILL DEEPEN TO 29.3 INCHES OVER HUDSON BAY WHILE A 30.1 INCH HIGH PRESSURE RIDGE MOVES THROUGH THE CENTRAL PLAINS. THIS RIDGE WILL BUILD INTO THE GREAT LAKES REGION ON FRIDAY. ANOTHER WEAK TROUGH AVERAGING 30.0 INCHES WILL SLIDE ACROSS LAKE SUPERIOR ON SATURDAY AND SATURDAY NIGHT. A 30.5 INCH HIGH WILL TRACK ACROSS NORTHERN ONTARIO ON SUNDAY AND MONDAY...AS THE TROUGH REMAINS ANCHORED OVER LAKE SUPERIOR. LSZ162-080830- LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND PORTAGE MN BEYOND 5NM- 944 PM EDT TUE OCT 7 2008 /844 PM CDT TUE OCT 7 2008/ .REST OF TONIGHT...WEST WINDS 5 TO 15 KNOTS. SHOWERS...BECOMING SCATTERED AFTER MIDNIGHT. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET. .WEDNESDAY...WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS LATE. A SLIGHT CHANCE OF SHOWERS EARLY. WAVES 1 TO 3 FEET. .WEDNESDAY NIGHT...WEST WINDS 15 TO 25 KNOTS INCREASING TO 30 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 4 TO 6 FEET. .THURSDAY...WEST WINDS TO 30 KNOTS. WAVES 4 TO 7 FEET. .THURSDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO 15 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET. .FRIDAY...WEST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST 10 TO 20 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS. WAVES BUILDING TO 2 TO 4 FEET. .FRIDAY NIGHT...EAST WINDS TO 30 KNOTS DIMINISHING TO 10 TO 20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS. WAVES BUILDING TO 4 TO 7 FEET. .SATURDAY...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET. .SUNDAY...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS. A CHANCE OF SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS. WAVES BUILDING TO 2 TO 4 FEET. $$ LSZ263-080830- LAKE SUPERIOR FROM SAXON HARBOR WI TO UPPER ENTRANCE TO PORTAGE CANAL MI 5NM OFF SHORE TO THE US/CANADIAN BORDER INCLUDING ISLE ROYALE NATIONAL PARK- 944 PM EDT TUE OCT 7 2008 ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING... .REST OF TONIGHT...SOUTH WINDS 10 TO 20 KNOTS. NUMEROUS SHOWERS. WAVES 4 TO 6 FEET. .WEDNESDAY...WEST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF SHOWERS THROUGH EARLY AFTERNOON. WAVES SUBSIDING TO 2 TO 4 FEET. .WEDNESDAY NIGHT...WEST WINDS 15 TO 25 KNOTS INCREASING TO 30 KNOTS BY MIDNIGHT. WAVES BUILDING TO 4 TO 7 FEET. .THURSDAY...WEST WINDS TO 30 KNOTS INCREASING TO GALES TO 35 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 7 TO 10 FEET. .THURSDAY NIGHT...WEST WINDS TO 30 KNOTS DIMINISHING TO 10 TO 20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO 3 TO 5 FEET. .FRIDAY...WEST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST 10 TO 20 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET. .FRIDAY NIGHT...EAST WINDS 15 TO 25 KNOTS. A SLIGHT CHANCE OF SHOWERS. WAVES BUILDING TO 4 TO 6 FEET. .SATURDAY...EAST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET. .SUNDAY...EAST WINDS 15 TO 25 KNOTS BECOMING SOUTHEAST 10 TO 20 KNOTS. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES BUILDING TO 3 TO 5 FEET. $$ LSZ264-080830- LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER- 944 PM EDT TUE OCT 7 2008 ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING... .REST OF TONIGHT...SOUTH WINDS TO 30 KNOTS DIMINISHING TO 15 TO 25 KNOTS AFTER MIDNIGHT...THEN BACKING SOUTHEAST LATE. NUMEROUS SHOWERS. WAVES 4 TO 8 FEET. .WEDNESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTHWEST BY MID AFTERNOON. A CHANCE OF SHOWERS THROUGH EARLY AFTERNOON. WAVES SUBSIDING TO 2 TO 4 FEET. .WEDNESDAY NIGHT...WEST WINDS TO 30 KNOTS. WAVES BUILDING TO 4 TO 7 FEET. .THURSDAY...WEST GALES TO 35 KNOTS. WAVES BUILDING TO 7 TO 10 FEET. .THURSDAY NIGHT...WEST WINDS TO 30 KNOTS DIMINISHING TO 15 TO 25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO 4 TO 6 FEET. .FRIDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET. .FRIDAY NIGHT...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS. WAVES BUILDING TO 2 TO 4 FEET. .SATURDAY...EAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO 20 KNOTS. A SLIGHT CHANCE OF SHOWERS. WAVES 2 TO 4 FEET. .SUNDAY...EAST WINDS 15 TO 25 KNOTS VEERING SOUTHEAST. A SLIGHT CHANCE OF SHOWERS. WAVES BUILDING TO 4 TO 6 FEET. $$ LSZ265-080830- LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI BEYOND 5NM FROM SHORE- 944 PM EDT TUE OCT 7 2008 .REST OF TONIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO 20 KNOTS LATE. NUMEROUS SHOWERS. WAVES 4 TO 7 FEET SUBSIDING TO 3 TO 5 FEET. .WEDNESDAY...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING WEST BY EARLY AFTERNOON...THEN INCREASING TO 10 TO 20 KNOTS LATE. A CHANCE OF SHOWERS THROUGH EARLY AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET. .WEDNESDAY NIGHT...WEST WINDS 15 TO 25 KNOTS INCREASING TO 30 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 5 FEET. .THURSDAY...WEST WINDS TO 30 KNOTS. WAVES BUILDING TO 4 TO 7 FEET. .THURSDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO 20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET. .FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING EAST BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET. .FRIDAY NIGHT...EAST WINDS 15 TO 25 KNOTS VEERING SOUTHEAST AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET. .SATURDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET. .SUNDAY...EAST WINDS 10 TO 20 KNOTS BECOMING SOUTHEAST 15 TO 25 KNOTS. A SLIGHT CHANCE OF SHOWERS. WAVES BUILDING TO 2 TO 4 FEET. $$ LSZ266-267-080830- 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- 944 PM EDT TUE OCT 7 2008 .REST OF TONIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS. SHOWERS. WAVES 4 TO 8 FEET. .WEDNESDAY...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS BY LATE MORNING...THEN VEERING WEST BY MID AFTERNOON. A CHANCE OF SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET. .WEDNESDAY NIGHT...WEST WINDS 10 TO 20 KNOTS INCREASING TO 30 KNOTS. WAVES BUILDING TO 4 TO 7 FEET. .THURSDAY...WEST WINDS TO 30 KNOTS. WAVES BUILDING TO 7 TO 10 FEET. .THURSDAY NIGHT...WEST WINDS TO 30 KNOTS DIMINISHING TO 10 TO 20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO 5 TO 8 FEET. .FRIDAY...WEST WINDS 5 TO 15 KNOTS BACKING EAST BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET. .FRIDAY NIGHT...EAST WINDS 10 TO 20 KNOTS BECOMING SOUTHEAST 15 TO 25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET. .SATURDAY...SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO 20 KNOTS. A SLIGHT CHANCE OF SHOWERS. WAVES BUILDING TO 3 TO 5 FEET. .SUNDAY...EAST WINDS 10 TO 20 KNOTS BECOMING SOUTHEAST 15 TO 25 KNOTS. A SLIGHT CHANCE OF SHOWERS. WAVES BUILDING TO 4 TO 6 FEET. $$ LSZ261-080830- MAFOR 0803/ SUPERIOR WEST 11526 11626 13620 13630. SLIGHT CHANCE OF SHOWERS WEDNESDAY MORNING. WAVES 1 TO 4 FEET. 220104. SUPERIOR NORTH CENTRAL 12446 11336 11320 11420 11510 11520 11630. CHANCE OF SHOWERS IN THE WEDNESDAY MORNING...THEN SLIGHT CHANCE OF SHOWERS WEDNESDAY AFTERNOON. WAVES 5 TO 8 FEET OVERNIGHT SUBSIDING TO 2 TO 4 FEET BY WEDNESDAY EVENING. 220508. SUPERIOR SOUTH CENTRAL 11436 12336 11220 11110 12620 11630. CHANCE OF SHOWERS WEDNESDAY MORNING. WAVES 1 TO 5 FEET. 220305. SUPERIOR EAST 11346 11336 12236 11230 11400 12620. CHANCE OF SHOWERS WEDNESDAY AFTERNOON. WAVES 4 TO 6 FEET OVERNIGHT SUBSIDING TO CALM TO 2 FEET BY WEDNESDAY EVENING. 220306. $$ SRF
