Great Lakes Forecast
Issued by NWS

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846
FZUS63 KMQT 200900
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
400 AM EST FRI JAN 20 2017

.SYNOPSIS...A 29.8 INCH RIDGE WILL EXTEND BACK TO THE UPPER GREAT
LAKES FROM THE EAST COAST TODAY. THE RIDGE WILL DRIFT NORTH ON
SATURDAY AS 29.4 INCH LOW PRESSURE MOVES OUT OVER THE CENTRAL
PLAINS. A WEAK INVERTED TROUGH OF 29.7 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. THE LOW
WEAKENS TO 29.5 INCHES OVER LAKE WINNIPEG MONDAY MORNING.
MEANWHILE...A 29.7 INCH TROUGH MOVES OVER THE NORTHERN GREAT LAKES
AND LINGERS INTO TUESDAY. ON TUESDAY AFTERNOON A 29.1 INCH LOW
ORGANIZES IN THE CENTRAL PLAINS AND TRACKS NORTHEAST.

LSZ162-201700-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
400 AM EST FRI JAN 20 2017 /300 AM CST FRI JAN 20 2017/

.EARLY THIS MORNING...SOUTH WINDS LESS THAN 10 KNOTS. WIDESPREAD
FOG. WAVES CALM TO 2 FEET.
.TODAY...EAST WINDS 5 TO 15 KNOTS. WIDESPREAD FOG IN THE
MORNING...THEN AREAS OF FOG IN THE AFTERNOON. A CHANCE OF RAIN
SHOWERS IN THE MORNING...THEN RAIN SHOWERS LIKELY IN THE
AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
AFTER MIDNIGHT. AREAS OF FOG. RAIN SHOWERS LIKELY IN THE EVENING.
A CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF DRIZZLE IN THE
MORNING. A CHANCE OF RAIN. WAVES BUILDING TO 2 TO 4 FEET.
.SATURDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. RAIN LIKELY. WAVES
BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.SUNDAY...EAST WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN. A CHANCE OF
DRIZZLE IN THE AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN
AND DRIZZLE. WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS. A CHANCE OF SNOW. WAVES CALM TO 2 FEET.

$$

LSZ263-201700-
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-
400 AM EST FRI JAN 20 2017

.EARLY THIS MORNING...SOUTH WINDS LESS THAN 10 KNOTS. WIDESPREAD
FOG. WAVES CALM TO 2 FEET.
.TODAY...SOUTHEAST WINDS LESS THAN 10 KNOTS BACKING EAST IN THE
AFTERNOON. WIDESPREAD FOG IN THE MORNING...THEN AREAS OF FOG IN
THE AFTERNOON. A CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES
CALM TO 2 FEET.
.TONIGHT...EAST WINDS 5 TO 15 KNOTS. AREAS OF FOG. RAIN SHOWERS
LIKELY IN THE EVENING. A SLIGHT CHANCE OF RAIN SHOWERS AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF
DRIZZLE. A CHANCE OF RAIN IN THE AFTERNOON. WAVES BUILDING TO
1 TO 3 FEET.
.SATURDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN.
WAVES BUILDING TO 2 TO 4 FEET.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN. A CHANCE
OF DRIZZLE IN THE AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.SUNDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN AND
DRIZZLE. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...WEST WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN. A CHANCE OF
SNOW. WAVES CALM TO 2 FEET.
.TUESDAY...WEST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS. A CHANCE OF SNOW. WAVES CALM TO 2 FEET.

$$

LSZ264-201700-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
400 AM EST FRI JAN 20 2017

.EARLY THIS MORNING...SOUTH WINDS 5 TO 15 KNOTS. WIDESPREAD FOG.
WAVES CALM TO 2 FEET.
.TODAY...SOUTHEAST WINDS LESS THAN 10 KNOTS. WIDESPREAD FOG IN
THE MORNING...THEN AREAS OF FOG IN THE AFTERNOON. A SLIGHT CHANCE
OF RAIN SHOWERS IN THE AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS. AREAS OF FOG. RAIN
SHOWERS LIKELY IN THE EVENING. A CHANCE OF RAIN SHOWERS AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING EAST 15 TO
25 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF DRIZZLE. A SLIGHT
CHANCE OF RAIN IN THE AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.SATURDAY NIGHT...EAST WINDS 15 TO 25 KNOTS. A CHANCE OF DRIZZLE
IN THE EVENING. A CHANCE OF RAIN. WAVES BUILDING TO 2 TO 4 FEET.
.SUNDAY...EAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO 20 KNOTS
IN THE AFTERNOON. A CHANCE OF RAIN. WAVES SUBSIDING TO 1 TO
3 FEET.
.SUNDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN.
WAVES 1 TO 3 FEET.
.MONDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH. RAIN
LIKELY...THEN A CHANCE OF RAIN AND SNOW. WAVES SUBSIDING TO CALM
TO 2 FEET.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BACKING NORTHEAST. A
CHANCE OF RAIN. A CHANCE OF SNOW. WAVES CALM TO 2 FEET.

$$

LSZ265-201700-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
400 AM EST FRI JAN 20 2017

.EARLY THIS MORNING...SOUTHEAST WINDS LESS THAN 10 KNOTS.
WIDESPREAD FOG. WAVES CALM TO 2 FEET.
.TODAY...SOUTHEAST WINDS LESS THAN 10 KNOTS VEERING SOUTH IN THE
AFTERNOON. WIDESPREAD FOG IN THE MORNING...THEN AREAS OF FOG IN
THE AFTERNOON. A CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES
CALM TO 2 FEET.
.TONIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS. AREAS OF FOG. RAIN
SHOWERS LIKELY IN THE EVENING. A SLIGHT CHANCE OF RAIN SHOWERS
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BACKING EAST IN THE
AFTERNOON. A SLIGHT CHANCE OF RAIN IN THE AFTERNOON. WAVES
BUILDING TO 1 TO 3 FEET.
.SATURDAY NIGHT...EAST WINDS 15 TO 25 KNOTS. A CHANCE OF DRIZZLE
IN THE EVENING...THEN A CHANCE OF RAIN AFTER MIDNIGHT. WAVES
BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN. WAVES
BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.SUNDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN.
WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN. A
CHANCE OF SNOW. WAVES CALM TO 2 FEET.
.TUESDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO
20 KNOTS. A CHANCE OF RAIN. A CHANCE OF SNOW. WAVES CALM TO
2 FEET.

$$

LSZ266-201700-
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-
400 AM EST FRI JAN 20 2017

.EARLY THIS MORNING...SOUTH WINDS 5 TO 15 KNOTS. WIDESPREAD FOG.
WAVES CALM TO 2 FEET.
.TODAY...SOUTH WINDS 5 TO 15 KNOTS. WIDESPREAD FOG IN THE
MORNING...THEN AREAS OF FOG IN THE AFTERNOON. A SLIGHT CHANCE OF
RAIN SHOWERS IN THE AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST AFTER
MIDNIGHT. AREAS OF FOG. A CHANCE OF RAIN SHOWERS. WAVES CALM TO
2 FEET.
.SATURDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF
RAIN AND DRIZZLE IN THE AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.SATURDAY NIGHT...EAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF DRIZZLE. A CHANCE OF RAIN
AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN. WAVES
SUBSIDING TO 1 TO 3 FEET.
.SUNDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN.
WAVES 1 TO 3 FEET.
.MONDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN. A
CHANCE OF SNOW. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO
20 KNOTS. A CHANCE OF RAIN. A CHANCE OF SNOW. WAVES CALM TO
2 FEET.

$$

LSZ267-201700-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
400 AM EST FRI JAN 20 2017

.EARLY THIS MORNING...SOUTH WINDS 10 TO 20 KNOTS. WIDESPREAD FOG.
WAVES CALM TO 2 FEET.
.TODAY...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST IN THE
AFTERNOON. WIDESPREAD FOG. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS. AREAS OF FOG. RAIN
SHOWERS LIKELY IN THE EVENING. A CHANCE OF RAIN SHOWERS AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF
DRIZZLE IN THE AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.SATURDAY NIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS BACKING EAST
AFTER MIDNIGHT. A SLIGHT CHANCE OF DRIZZLE. WAVES 1 TO 3 FEET.
.SUNDAY...EAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO 20 KNOTS
IN THE AFTERNOON. A CHANCE OF DRIZZLE IN THE MORNING. A CHANCE OF
RAIN. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY NIGHT...EAST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN. A
CHANCE OF DRIZZLE AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.MONDAY...SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. RAIN LIKELY...THEN A CHANCE OF RAIN AND SNOW. WAVES
CALM TO 2 FEET.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BACKING EAST. A CHANCE
OF RAIN. A CHANCE OF SNOW. WAVES CALM TO 2 FEET.

$$

LSZ261-201700-
MAFOR 2010/
SUPERIOR WEST 11403 11303 12203 12216 11213 11310. CHANCE OF RAIN
SHOWERS. PATCHY FOG AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.

SUPERIOR NORTH CENTRAL 12403 14303 11306 11300. PATCHY FOG LATE.
CHANCE OF RAIN SHOWERS. WAVES 2 FEET OR LESS.

SUPERIOR SOUTH CENTRAL 11313 13403 11303 11306 11303 11300.
PATCHY FOG OVERNIGHT. CHANCE OF RAIN SHOWERS AFTER MIDNIGHT
TONIGHT. WAVES 2 FEET OR LESS.

SUPERIOR EAST 13413 11303 12313 11316 11310. PATCHY FOG LATE.
CHANCE OF RAIN SHOWERS OVERNIGHT. WAVES 1 TO 2 FEET.

$$

TITUS



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