Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 230900
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
400 AM EST MON JAN 23 2017

.SYNOPSIS...EXPECT A LOW PRESSURE TROUGH AVERAGING 29.7 INCHES TO
LINGER OVER THE NORTHWEST GREAT LAKES INTO TUESDAY. A 29.3 INCH LOW
PRESSURE DEVELOPING OVER THE CENTRAL PLAINS ON TUESDAY WILL REACH
LOWER MICHIGAN ON WEDNESDAY. ALTHOUGH THIS LOW WILL DISSIPATE ON
THURSDAY AS IT MOVES INTO QUEBEC...A LOW PRESSURE TROUGH AVERAGING
29.8 INCHES WILL LINGER OVER THE UPPER GREAT LAKES TO THE EAST OF A
30.4 INCH HIGH PRESSURE RIDGE BUILDING INTO THE WESTERN PLAINS. THE
TROUGH OVER THE UPPER GREAT LAKES ON FRIDAY WILL WEAKEN TO 29.9
INCHES AS THE PLAINS HIGH PRESSURE SHIFTS TOWARD THE LOWER
MISSISSIPPI RIVER VALLEY.

LSZ162-231700-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
400 AM EST MON JAN 23 2017 /300 AM CST MON JAN 23 2017/

.EARLY THIS MORNING...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.TODAY...WEST WINDS LESS THAN 10 KNOTS INCREASING TO 5 TO
15 KNOTS IN THE AFTERNOON. PATCHY FOG IN THE MORNING. WAVES CALM
TO 2 FEET.
.TONIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.TUESDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST IN THE
AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS...POSSIBLY MIXED WITH RAIN. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM
TO 2 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS BACKING NORTHWEST
AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 1 TO
3 FEET.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES 1 TO 3 FEET.
.FRIDAY...NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES 1 TO 3 FEET.

$$

LSZ263-231700-
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 MON JAN 23 2017

.EARLY THIS MORNING...WEST WINDS 5 TO 15 KNOTS. PATCHY FOG. WAVES
CALM TO 2 FEET.
.TODAY...WEST WINDS LESS THAN 10 KNOTS BECOMING SOUTHWEST 5 TO
15 KNOTS IN THE AFTERNOON. PATCHY FOG. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.TUESDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST IN THE
AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS INCREASING TO
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS IN THE
EVENING. A CHANCE OF RAIN SHOWERS. SNOW SHOWERS LIKELY AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS IN THE AFTERNOON. SNOW SHOWERS LIKELY IN THE MORNING...
THEN A CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES BUILDING TO
1 TO 3 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 2 TO 4 FEET.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 2 TO
4 FEET.
.FRIDAY...NORTHWEST WINDS 15 TO 25 KNOTS VEERING NORTH. A CHANCE
OF SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET...THEN BUILDING
TO 2 TO 4 FEET.

$$

LSZ264-231700-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
400 AM EST MON JAN 23 2017

.EARLY THIS MORNING...WEST WINDS 5 TO 15 KNOTS. AREAS OF FOG.
WAVES CALM TO 2 FEET.
.TODAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST IN THE
AFTERNOON. PATCHY FOG. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST IN THE
AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN
SHOWERS. SNOW SHOWERS LIKELY AFTER MIDNIGHT. WAVES CALM TO
2 FEET.
.WEDNESDAY...NORTHEAST WINDS 15 TO 25 KNOTS BECOMING NORTH 20 TO
30 KNOTS IN THE AFTERNOON. SNOW SHOWERS LIKELY IN THE MORNING...
THEN A CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES BUILDING TO
2 TO 4 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 3 TO 5 FEET.
.THURSDAY...NORTH WINDS 15 TO 25 KNOTS BACKING NORTHWEST. A
CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET...THEN
BUILDING TO 3 TO 5 FEET.
.FRIDAY...NORTHWEST WINDS 15 TO 25 KNOTS VEERING NORTH. A CHANCE
OF SNOW SHOWERS...THEN SNOW SHOWERS LIKELY. WAVES SUBSIDING TO
2 TO 4 FEET.

$$

LSZ265-231700-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
400 AM EST MON JAN 23 2017

.EARLY THIS MORNING...WEST WINDS 5 TO 15 KNOTS. AREAS OF FOG.
WAVES CALM TO 2 FEET.
.TODAY...WEST WINDS 5 TO 15 KNOTS. PATCHY FOG. WAVES CALM TO
2 FEET.
.TONIGHT...SOUTHWEST WINDS LESS THAN 10 KNOTS BECOMING WEST 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.TUESDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTH IN THE
AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST AFTER
MIDNIGHT. A CHANCE OF SNOW SHOWERS IN THE EVENING. A CHANCE OF
RAIN SHOWERS. SNOW SHOWERS LIKELY AFTER MIDNIGHT. WAVES CALM TO
2 FEET.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTH 15 TO
25 KNOTS IN THE AFTERNOON. SNOW SHOWERS LIKELY. WAVES BUILDING TO
1 TO 3 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS BACKING NORTHWEST
AFTER MIDNIGHT. SNOW SHOWERS LIKELY IN THE EVENING...THEN A
CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO
4 FEET.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO 2 TO
4 FEET.
.FRIDAY...NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW
SHOWERS...THEN SNOW SHOWERS LIKELY. WAVES BUILDING TO 3 TO
5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.

$$

LSZ266-231700-
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 MON JAN 23 2017

.EARLY THIS MORNING...WEST WINDS 5 TO 15 KNOTS. AREAS OF FOG. A
SLIGHT CHANCE OF DRIZZLE. WAVES CALM TO 2 FEET.
.TODAY...WEST WINDS LESS THAN 10 KNOTS BECOMING SOUTHEAST 5 TO
15 KNOTS IN THE AFTERNOON. AREAS OF FOG. A SLIGHT CHANCE OF
DRIZZLE. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. A CHANCE OF DRIZZLE. A CHANCE OF RAIN AFTER MIDNIGHT.
WAVES CALM TO 2 FEET.
.TUESDAY...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST IN THE
AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS IN THE MORNING. WAVES
CALM TO 2 FEET.
.TUESDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF
RAIN SHOWERS IN THE EVENING...THEN SNOW SHOWERS...POSSIBLY MIXED
WITH RAIN AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTH 15 TO
25 KNOTS IN THE AFTERNOON. SNOW SHOWERS LIKELY. WAVES BUILDING TO
2 TO 4 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 3 TO 5 FEET.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 3 TO
6 FEET.
.FRIDAY...NORTHWEST WINDS 15 TO 25 KNOTS VEERING NORTH. A CHANCE
OF SNOW SHOWERS...THEN SNOW SHOWERS LIKELY. WAVES SUBSIDING TO
3 TO 6 FEET.

$$

LSZ267-231700-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
400 AM EST MON JAN 23 2017

.EARLY THIS MORNING...SOUTHEAST WINDS 5 TO 15 KNOTS. PATCHY FOG.
A SLIGHT CHANCE OF DRIZZLE. WAVES CALM TO 2 FEET.
.TODAY...SOUTHEAST WINDS 5 TO 15 KNOTS. PATCHY FOG. A CHANCE OF
DRIZZLE. A CHANCE OF RAIN IN THE AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS. A CHANCE OF DRIZZLE IN
THE EVENING. A CHANCE OF RAIN...POSSIBLY MIXED WITH SNOW. WAVES
CALM TO 2 FEET.
.TUESDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST IN THE
AFTERNOON. A CHANCE OF RAIN SHOWERS. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS BACKING EAST
AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS IN THE EVENING...
THEN SNOW SHOWERS...POSSIBLY MIXED WITH RAIN AFTER MIDNIGHT.
WAVES CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 10 TO 20 KNOTS BACKING NORTH IN THE
AFTERNOON. SNOW SHOWERS LIKELY. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS. SNOW SHOWERS
LIKELY IN THE EVENING...THEN A CHANCE OF SNOW SHOWERS AFTER
MIDNIGHT. WAVES BUILDING TO 3 TO 5 FEET.
.THURSDAY...NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 3 TO 6 FEET.
.FRIDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS. SNOW SHOWERS. WAVES SUBSIDING TO 3 TO 6 FEET.

$$

LSZ261-231700-
MAFOR 2310/
SUPERIOR WEST 12600 11500 12600 12500 11600. PATCHY FOG. WAVES 1
FOOT OR LESS.

SUPERIOR NORTH CENTRAL 11603 12600 14500 11500. PATCHY FOG. WAVES
1 FOOT OR LESS.

SUPERIOR SOUTH CENTRAL 11603 13600 12700 12600. PATCHY FOG. WAVES
1 FOOT OR LESS.

SUPERIOR EAST 11303 11300 11310 14300 11300. PATCHY FOG. CHANCE
OF DRIZZLE LATE TODAY. CHANCE OF RAIN...DRIZZLE AND SNOW TONIGHT.
WAVES 1 FOOT OR LESS.

$$

JLB


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