Great Lakes Forecast
Issued by NWS

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545
FZUS63 KMQT 191457
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
957 AM EST THU JAN 19 2017

.SYNOPSIS...HIGH PRESSURE OF 30.2 INCHES CENTERED OVER THE CENTRAL
APPALACHIANS AND OHIO VALLEY WILL WEAKEN TO 30.0 INCHES AS IT
REACHES THE EAST COAST THIS EVENING. A 29.8 INCH RIDGE WILL EXTEND
BACK TO THE UPPER GREAT LAKES THROUGH THE SAME TIME PERIOD. THE
RIDGE WILL DRIFT NORTH ON SATURDAY AS 29.4 INCH LOW PRESSURE MOVES
OUT OVER THE CENTRAL PLAINS. A WEAK INVERTED TROUGH OF 29.8
INCHES WILL LIFT NORTH ACROSS THE NORTHERN PLAINS AND WESTERN
GREAT LAKES SATURDAY AND SUNDAY AS A 29.3 INCH LOW DEVELOPS IN THE
LEE OF THE ROCKIES AND TRACKS FROM THE SOUTHERN PLAINS TO THE
NORTHERN PLAINS. AS THE LOW WEAKENS TO 29.5 INCHES OVER SOUTHERN
MANITOBA MONDAY MORNING...A 29.7 INCH TROUGH WILL MOVE OVER THE
NORTHERN GREAT LAKES.

LSZ162-192300-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
957 AM EST THU JAN 19 2017 /857 AM CST THU JAN 19 2017/

.REST OF TODAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.TONIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH AFTER
MIDNIGHT. A SLIGHT CHANCE OF RAIN AFTER MIDNIGHT. WAVES CALM TO
2 FEET.
.FRIDAY...SOUTH WINDS 5 TO 15 KNOTS BACKING EAST IN THE
AFTERNOON. A CHANCE OF RAIN IN THE MORNING...THEN RAIN LIKELY.
WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN. WAVES
CALM TO 2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN. WAVES
BUILDING TO 1 TO 3 FEET.
.SATURDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN.
WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...EAST WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN. WAVES CALM
TO 2 FEET.
.MONDAY...NORTHEAST WINDS 10 TO 20 KNOTS BACKING NORTH. A CHANCE
OF RAIN AND SNOW. WAVES CALM TO 2 FEET.

$$

LSZ263-192300-
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-
957 AM EST THU JAN 19 2017

.REST OF TODAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.TONIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST IN THE
AFTERNOON. A CHANCE OF RAIN. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST AFTER
MIDNIGHT. RAIN LIKELY IN THE EVENING...THEN A CHANCE OF RAIN.
WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN. WAVES
CALM TO 2 FEET.
.SATURDAY NIGHT...EAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN. WAVES BUILDING TO 1 TO
3 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. A CHANCE OF RAIN. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTH WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN. A CHANCE
OF SNOW. WAVES CALM TO 2 FEET.

$$

LSZ264-192300-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
957 AM EST THU JAN 19 2017

.REST OF TODAY...SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS IN THE AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST IN THE
AFTERNOON. A CHANCE OF RAIN IN THE AFTERNOON. WAVES CALM TO
2 FEET.
.FRIDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. RAIN LIKELY IN THE EVENING...THEN A
CHANCE OF RAIN. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BACKING EAST IN THE
AFTERNOON. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...EAST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN.
WAVES BUILDING TO 1 TO 3 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN. WAVES
SUBSIDING TO CALM TO 2 FEET.
.MONDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BACKING EAST. A CHANCE
OF RAIN AND SNOW. WAVES CALM TO 2 FEET.

$$

LSZ265-192300-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
957 AM EST THU JAN 19 2017

.REST OF TODAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH IN
THE AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTHEAST WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN IN THE
AFTERNOON. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN.
WAVES BUILDING TO 1 TO 3 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN. WAVES
SUBSIDING TO CALM TO 2 FEET.
.MONDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BACKING EAST. A CHANCE
OF RAIN AND SNOW. WAVES CALM TO 2 FEET.

$$

LSZ266-192300-
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-
957 AM EST THU JAN 19 2017

.REST OF TODAY...SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST IN THE
AFTERNOON. A CHANCE OF RAIN IN THE AFTERNOON. WAVES CALM TO
2 FEET.
.FRIDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH
AFTER MIDNIGHT. A CHANCE OF RAIN. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...EAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN. WAVES
SUBSIDING TO CALM TO 2 FEET.
.MONDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BACKING EAST. A CHANCE
OF RAIN AND SNOW. WAVES CALM TO 2 FEET.

$$

LSZ267-192300-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
957 AM EST THU JAN 19 2017

.REST OF TODAY...SOUTH WINDS 10 TO 20 KNOTS. PATCHY FOG LATE IN
THE MORNING. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 10 TO 20 KNOTS BACKING SOUTHEAST IN THE
AFTERNOON. A SLIGHT CHANCE OF RAIN IN THE AFTERNOON. WAVES CALM
TO 2 FEET.
.FRIDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH
AFTER MIDNIGHT. RAIN LIKELY IN THE EVENING...THEN A SLIGHT CHANCE
OF RAIN. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS BACKING EAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN. WAVES
CALM TO 2 FEET.
.MONDAY...SOUTHEAST WINDS 15 TO 25 KNOTS BECOMING EAST 10 TO
20 KNOTS. A CHANCE OF RAIN AND SNOW. WAVES CALM TO 2 FEET.

$$
LSZ261-192300-
MAFOR 1916/
SUPERIOR WEST 12510 11500 12510 11500 12400. CHANCE OF RAIN LATE
FRIDAY MORNING. WAVES 2 FEET OR LESS.

SUPERIOR NORTH CENTRAL 14410 11510 11500 12400. WAVES 2 FEET OR
LESS.

SUPERIOR SOUTH CENTRAL 12400 12410 12400 12300. WAVES 2 FEET OR
LESS.

SUPERIOR EAST 16410. WAVES 1 TO 2 FEET.

$$

JS



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