Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 230240
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
940 PM EST WED FEB 22 2017

.SYNOPSIS...LOW PRESSURE OF 29.6 INCHES OVER UPPER MICHIGAN LATE
THIS EVENING WILL REACH SOUTHERN QUEBEC ON THURSDAY. IN ITS
WAKE...A 30.0 INCH HIGH PRESSURE RIDGE WILL BUILD SOUTHEAST TO THE
UPPER GREAT LAKES AS LOW PRESSURE OF 29.2 INCHES ORGANIZES OVER
THE CENTRAL PLAINS. THIS LOW WILL TRACK NORTHEAST...REACHING
GEORGIAN BAY SATURDAY MORNING AND THEN QUEBEC SATURDAY AFTERNOON.
IN ITS WAKE...HIGH PRESSURE OF 30.2 INCHES WILL BUILD OVER THE
PLAINS SATURDAY AND SLIDE THROUGH THE MID MISSISSIPPI VALLEY
SUNDAY. THIS WILL PLACE A 30.0 INCH RIDGE ACROSS THE UPPER GREAT
LAKES LATE SATURDAY NIGHT INTO SUNDAY MORNING. A QUICK MOVING 29.8
INCH LOW PRESSURE SYSTEM WILL THEN CROSS LAKE SUPERIOR SUNDAY
AFTERNOON INTO SUNDAY NIGHT. HIGH PRESSURE WILL THEN SLIDE ACROSS
THE AREA AT 30.1 INCHES ON MONDAY.

LSZ162-231045-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
940 PM EST WED FEB 22 2017 /840 PM CST WED FEB 22 2017/

...GALE WATCH IN EFFECT FROM FRIDAY MORNING THROUGH LATE FRIDAY
NIGHT...

.REST OF TONIGHT...NORTH WINDS 10 TO 20 KNOTS. NUMEROUS RAIN AND
SNOW SHOWERS LATE IN THE EVENING...THEN SCATTERED RAIN AND SNOW
SHOWERS AFTER MIDNIGHT. WAVES 2 TO 4 FEET.
.THURSDAY...NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST IN THE
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO
20 TO 30 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW AFTER
MIDNIGHT. WAVES BUILDING TO 4 TO 7 FEET.
.FRIDAY...NORTHEAST GALES TO 40 KNOTS. FREEZING SPRAY. SNOW
LIKELY...POSSIBLY MIXED WITH FREEZING RAIN. WAVES BUILDING TO
8 TO 11 FEET.
.FRIDAY NIGHT...NORTHEAST GALES TO 35 KNOTS BECOMING NORTH 20 TO
30 KNOTS AFTER MIDNIGHT. FREEZING SPRAY. SNOW LIKELY IN THE
EVENING. A CHANCE OF SNOW AFTER MIDNIGHT. WAVES SUBSIDING TO 4 TO
7 FEET.
.SATURDAY...NORTH WINDS 20 TO 30 KNOTS BACKING NORTHWEST IN THE
AFTERNOON. FREEZING SPRAY IN THE MORNING. A CHANCE OF SNOW. WAVES
SUBSIDING TO 3 TO 5 FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW. WAVES SUBSIDING
TO CALM TO 2 FEET.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS. A CHANCE OF SNOW. WAVES CALM TO 2 FEET.
.MONDAY...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS.
A CHANCE OF SNOW. WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING
TO CALM TO 2 FEET.

$$

LSZ263-231045-
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-
940 PM EST WED FEB 22 2017

...GALE WATCH IN EFFECT FROM FRIDAY MORNING THROUGH LATE FRIDAY
NIGHT...

.REST OF TONIGHT...NORTH WINDS 20 TO 30 KNOTS. SCATTERED SNOW
SHOWERS. NUMEROUS RAIN SHOWERS LATE IN THE EVENING. SCATTERED RAIN
SHOWERS AFTER MIDNIGHT. WAVES 2 TO 4 FEET BUILDING TO 3 TO 6
FEET.
.THURSDAY...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO
15 KNOTS IN THE AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHEAST
20 TO 30 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW AFTER
MIDNIGHT. WAVES BUILDING TO 4 TO 7 FEET.
.FRIDAY...NORTHEAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO 35
KNOTS BY THE AFTERNOON. FREEZING SPRAY. SNOW LIKELY...POSSIBLY
MIXED WITH FREEZING RAIN. WAVES BUILDING TO 8 TO 11 FEET.
.FRIDAY NIGHT...NORTHEAST GALES TO 35 KNOTS BACKING NORTH AFTER
MIDNIGHT. FREEZING SPRAY. SNOW LIKELY. WAVES SUBSIDING TO 5 TO
8 FEET.
.SATURDAY...NORTH WINDS 20 TO 30 KNOTS BACKING NORTHWEST IN THE
AFTERNOON. FREEZING SPRAY. SNOW LIKELY IN THE MORNING. A CHANCE
OF SNOW IN THE AFTERNOON. WAVES SUBSIDING TO 3 TO 6 FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF
SNOW. WAVES SUBSIDING TO 1 TO 3 FEET.
.SUNDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. SNOW LIKELY...THEN A CHANCE OF SNOW. WAVES SUBSIDING TO
CALM TO 2 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 15 TO
25 KNOTS. A CHANCE OF SNOW. WAVES BUILDING TO 1 TO 3 FEET...THEN
SUBSIDING TO CALM TO 2 FEET.

$$

LSZ264-231045-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
940 PM EST WED FEB 22 2017

...GALE WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY
NIGHT...

.REST OF TONIGHT...NORTH WINDS 20 TO 30 KNOTS. SCATTERED RAIN AND
SNOW SHOWERS. WAVES 2 TO 4 FEET BUILDING TO 4 TO 7 FEET.
.THURSDAY...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHEAST
20 TO 30 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 5 FEET.
.FRIDAY...NORTHEAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO 35
KNOTS IN THE AFTERNOON. FREEZING SPRAY. A CHANCE OF SNOW IN THE
MORNING. SNOW LIKELY...POSSIBLY MIXED WITH FREEZING RAIN IN THE
AFTERNOON. WAVES BUILDING TO 7 TO 10 FEET.
.FRIDAY NIGHT...NORTHEAST GALES TO 35 KNOTS BACKING NORTH AFTER
MIDNIGHT. FREEZING SPRAY. SNOW LIKELY. WAVES SUBSIDING TO 5 TO
8 FEET.
.SATURDAY...NORTH WINDS 20 TO 30 KNOTS. FREEZING SPRAY. SNOW
LIKELY IN THE MORNING. A CHANCE OF SNOW IN THE AFTERNOON. WAVES 5
TO 8 FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. A
CHANCE OF SNOW. WAVES SUBSIDING TO 2 TO 4 FEET.
.SUNDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. SNOW LIKELY...THEN A CHANCE OF SNOW. WAVES SUBSIDING TO
CALM TO 2 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 15 TO
25 KNOTS. A CHANCE OF SNOW. WAVES BUILDING TO 2 TO 4 FEET...THEN
SUBSIDING TO 1 TO 3 FEET.

$$

LSZ265-231045-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
940 PM EST WED FEB 22 2017

.REST OF TONIGHT...NORTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS AFTER MIDNIGHT. NUMEROUS RAIN SHOWERS...POSSIBLY MIXED
WITH SNOW. WAVES 1 TO 3 FEET BUILDING TO 4 TO 7 FEET.
.THURSDAY...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHEAST
15 TO 25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO
2 TO 4 FEET.
.FRIDAY...NORTHEAST WINDS 20 TO 30 KNOTS. GALE FORCE GUSTS TO 35
KNOTS IN THE AFTERNOON. SNOW LIKELY...POSSIBLY MIXED WITH
FREEZING RAIN. WAVES BUILDING TO 6 TO 9 FEET.
.FRIDAY NIGHT...NORTHEAST WINDS 20 TO 30 KNOTS BACKING NORTH
AFTER MIDNIGHT. GALE FORCE GUSTS TO 35 KNOTS. SNOW...POSSIBLY
MIXED WITH FREEZING RAIN. FREEZING SPRAY AFTER MIDNIGHT. WAVES
SUBSIDING TO 5 TO 8 FEET.
.SATURDAY...NORTH WINDS 20 TO 30 KNOTS BACKING NORTHWEST IN THE
AFTERNOON. FREEZING SPRAY. SNOW. WAVES 5 TO 8 FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS. FREEZING SPRAY
IN THE EVENING. SNOW LIKELY IN THE EVENING...THEN A CHANCE OF
SNOW AFTER MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.
.SUNDAY...WEST WINDS 15 TO 25 KNOTS VEERING NORTHWEST. SNOW
LIKELY...THEN A CHANCE OF SNOW. WAVES SUBSIDING TO CALM TO
2 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 15 TO
25 KNOTS. A CHANCE OF SNOW. WAVES BUILDING TO 1 TO 3 FEET.

$$

LSZ266-231045-
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-
940 PM EST WED FEB 22 2017

...GALE WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY
NIGHT...

.REST OF TONIGHT...NORTH WINDS 10 TO 20 KNOTS INCREASING TO 20 TO
30 KNOTS AFTER MIDNIGHT. SCATTERED SNOW SHOWERS. NUMEROUS RAIN
SHOWERS LATE IN THE EVENING. SCATTERED RAIN SHOWERS AFTER
MIDNIGHT. WAVES 1 TO 3 FEET BUILDING TO 5 TO 8 FEET.
.THURSDAY...NORTH WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO 1 TO
3 FEET.
.THURSDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW AFTER MIDNIGHT. WAVES
BUILDING TO 2 TO 4 FEET.
.FRIDAY...NORTHEAST GALES TO 35 KNOTS. SNOW LIKELY...POSSIBLY
MIXED WITH FREEZING RAIN. WAVES BUILDING TO 6 TO 9 FEET.
.FRIDAY NIGHT...NORTHEAST GALES TO 35 KNOTS. SNOW. WAVES
SUBSIDING TO 5 TO 8 FEET.
.SATURDAY...NORTH WINDS 20 TO 30 KNOTS BACKING NORTHWEST IN THE
AFTERNOON. FREEZING SPRAY. SNOW. WAVES BUILDING TO 7 TO 10 FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS. FREEZING SPRAY.
SNOW LIKELY IN THE EVENING. A CHANCE OF SNOW AFTER MIDNIGHT.
WAVES SUBSIDING TO 4 TO 7 FEET.
.SUNDAY...WEST WINDS 15 TO 25 KNOTS VEERING NORTHWEST. SNOW
LIKELY...THEN A CHANCE OF SNOW. WAVES SUBSIDING TO CALM TO
2 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 15 TO
25 KNOTS. A CHANCE OF SNOW. WAVES BUILDING TO 2 TO 4 FEET.

$$

LSZ267-231045-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
940 PM EST WED FEB 22 2017

.REST OF TONIGHT...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. RAIN SHOWERS. SCATTERED SNOW SHOWERS
AFTER MIDNIGHT. WAVES CALM TO 2 FEET BUILDING TO 3 TO 5 FEET.
.THURSDAY...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF DRIZZLE AND SNOW IN
THE MORNING. WAVES BUILDING TO 3 TO 6 FEET...THEN SUBSIDING TO
1 TO 3 FEET.
.THURSDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.FRIDAY...EAST WINDS 20 TO 30 KNOTS. SNOW LIKELY IN THE MORNING...
THEN A CHANCE OF FREEZING RAIN AND SNOW IN THE AFTERNOON. WAVES
BUILDING TO 4 TO 7 FEET...THEN SUBSIDING TO 3 TO 6 FEET.
.FRIDAY NIGHT...EAST WINDS 20 TO 30 KNOTS BECOMING NORTHEAST
15 TO 25 KNOTS AFTER MIDNIGHT. SNOW. FREEZING RAIN...POSSIBLY
MIXED WITH RAIN AFTER MIDNIGHT. WAVES SUBSIDING TO 3 TO 5 FEET.
.SATURDAY...NORTH WINDS 20 TO 30 KNOTS BECOMING NORTHWEST GALES
TO 35 KNOTS IN THE AFTERNOON. SNOW. FREEZING SPRAY IN THE
AFTERNOON. WAVES BUILDING TO 6 TO 9 FEET.
.SATURDAY NIGHT...NORTHWEST GALES TO 35 KNOTS DIMINISHING TO
20 TO 30 KNOTS AFTER MIDNIGHT. FREEZING SPRAY. SNOW LIKELY IN THE
EVENING. A CHANCE OF SNOW AFTER MIDNIGHT. WAVES SUBSIDING TO 4 TO
7 FEET.
.SUNDAY...WEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS. FREEZING SPRAY. SNOW LIKELY...THEN A CHANCE OF SNOW.
WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 15 TO
25 KNOTS. A CHANCE OF SNOW. WAVES BUILDING TO 2 TO 4 FEET.

$$
LSZ261-231045-
MAFOR 2304/
SUPERIOR WEST 11837 12830 11820 11810 11100 11800 11120.
SCATTERED RAIN AND SNOW SHOWERS AFTER OVERNIGHT. WAVES 1 TO 5
FEET.

SUPERIOR NORTH CENTRAL 13840 11830 12820 11810 11820. SCATTERED
RAIN AND SNOW SHOWERS LATE THIS EVENING. WAVES 2 TO 4 FEET
BUILDING TO 4 TO 7 FEET OVERNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET
THURSDAY AND THURSDAY EVENING.

SUPERIOR SOUTH CENTRAL 11837 11847 12840 11830 13820. SCATTERED
SNOW AND RAIN SHOWERS LATE OVERNIGHT. WAVES 1 TO 3 FEET BUILDING
TO 5 TO 7 FEET OVERNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET
THURSDAY AND THURSDAY EVENING.

SUPERIOR EAST 11126 11836 12840 11830 13820. SCATTERED RAIN AND
SNOW SHOWERS LATE OVERNIGHT. WAVES 1 FOOT OR LESS BUILDING TO 3
TO 5 FEET OVERNIGHT. WAVES 2 TO 6 FEET THURSDAY AND THURSDAY
EVENING.

$$

KLUBER


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