Great Lakes Forecast
Issued by NWS

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431
FZUS63 KLOT 122326 AAA
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN...UPDATED
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
526 PM CST FRI FEB 12 2016

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN.

WAVES ARE PROVIDED AS A RANGE OF SIGNIFICANT WAVE HEIGHTS...WHICH
IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES...ALONG
WITH THE AVERAGE HEIGHT OF THE HIGHEST 10 PERCENT OF THE WAVES
WHICH WILL OCCASIONALLY BE ENCOUNTERED.

.SYNOPSIS...A 29.9 INCH LOW OVER SOUTHWEST QUEBEC WILL CONTINUE TO
LIFT NORTHEAST TOWARDS THE CANADIAN MARITIME MIDDAY SATURDAY. THIS
LOW HAD A TRAILING ARCTIC COLD FRONT SLIDING SOUTH ACROSS THE
WESTERN GREAT LAKES REGION THIS AFTERNOON. A STRONG 30.8 INCH
HIGH OVER THE UPPER MIDWEST WILL SLIDE SOUTH TONIGHT INTO THE
CENTRAL PLAINS...THEN SHIFT EAST ACROSS THE WESTERN GREAT LAKES
SATURDAY MORNING. THIS RIDGE OF HIGH PRESSURE WILL THEN WEAKEN
SATURDAY EVENING TO 30.6 INCHES. THE HIGH WILL BECOME CENTERED
OVER THE CENTRAL ATLANTIC COAST BY SUNDAY NIGHT...WHILE A TROUGH
OF LOW PRESSURE AVERAGING 29.8 INCHES MOVES THROUGH THE UPPER
MIDWEST AND WESTERN GREAT LAKES SUNDAY NIGHT INTO MONDAY.

LMZ261-362-364-366-563-565-567-868-130415-
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN SOUTH OF A LINE FROM SEUL CHOIX POINT TO THE
MACKINAC BRIDGE AND NORTH OF A LINE FROM CHARLEVOIX MI TO SOUTH
FOX ISLAND 5 NM OFFSHORE-
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
526 PM CST FRI FEB 12 2016

SHEBOYGAN WI TO PENTWATER MI NORTH

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH LATE TONIGHT...

.TONIGHT...NORTHWEST GALES TO 40 KT DIMINISHING TO 35 KT. HEAVY
FREEZING SPRAY AND SNOW SHOWERS. WATERSPOUTS LIKELY. WAVES 8 TO
11 FT OCCASIONALLY TO 14 FT SUBSIDING TO 6 TO 9 FT OCCASIONALLY TO
11 FT.
.SATURDAY...NORTHWEST TO 30 KT DIMINISHING TO 15 TO 25 KT.
FREEZING SPRAY AND SNOW SHOWERS IN THE MORNING. CHANCE OF SNOW
SHOWERS IN THE AFTERNOON. WATERSPOUTS LIKELY...MAINLY IN THE
MORNING. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO
6 FT OCCASIONALLY TO 8 FT.
.SATURDAY NIGHT...NORTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT AFTER MIDNIGHT AND BECOMING WEST. CHANCE OF SNOW SHOWERS.
WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
.SUNDAY...SOUTH WINDS 15 TO 25 KT INCREASING TO 30 KT. CHANCE OF
SNOW. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT BUILDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.SUNDAY NIGHT...SOUTH WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
CHANCE OF SNOW. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO
4 TO 6 FT OCCASIONALLY TO 8 FT.
.MONDAY...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST. CHANCE OF
SNOW. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.MONDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST. WAVES
2 TO 4 FT.
.TUESDAY...WEST WINDS 10 TO 15 KT BECOMING NORTHWEST 10 TO 20 KT.
CHANCE OF SNOW. WAVES 2 TO 4 FT.
.WEDNESDAY...NORTH WINDS 10 TO 20 KT BECOMING NORTHWEST. WAVES
2 TO 4 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-130415-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
526 PM CST FRI FEB 12 2016

SHEBOYGAN WI TO PENTWATER MI SOUTH

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH LATE TONIGHT...

.TONIGHT...NORTHWEST GALES TO 40 KT DIMINISHING TO 35 KT. HEAVY
FREEZING SPRAY AND SNOW SHOWERS. CHANCE OF WATERSPOUTS. WAVES 10
TO 14 FT OCCASIONALLY TO 18 FT.
.SATURDAY...NORTHWEST WINDS TO 30 KT DIMINISHING TO 10 TO 20 KT.
SNOW SHOWERS. FREEZING SPRAY IN THE MORNING. CHANCE OF
WATERSPOUTS IN THE MORNING. WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT
SUBSIDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
.SATURDAY NIGHT...NORTHWEST WINDS 10 TO 15 KT DIMINISHING TO 5 TO
10 KT LATE IN THE EVENING...THEN BECOMING WEST AFTER MIDNIGHT.
CHANCE OF SNOW SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT
SUBSIDING TO 2 TO 4 FT.
.SUNDAY...SOUTH WINDS 15 TO 25 KT BECOMING SOUTHEAST TO 30 KT.
SNOW. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT BUILDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.SUNDAY NIGHT...SOUTHEAST WINDS TO 30 KT BECOMING SOUTH 15 TO
25 KT. SNOW IN THE EVENING...THEN SNOW LIKELY OVERNIGHT. WAVES
4 TO 7 FT OCCASIONALLY TO 9 FT.
.MONDAY...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST. CHANCE OF
SNOW. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.TUESDAY...WEST WINDS 10 TO 15 KT BECOMING NORTHWEST 10 TO 20 KT.
CHANCE OF SNOW. WAVES 1 TO 3 FT.
.WEDNESDAY...NORTH WINDS 10 TO 20 KT BECOMING NORTHWEST. WAVES
2 TO 4 FT.

$$
LMZ761-130415-
MAFOR 1222/
MICHIGAN NORTH...GALE WARNING IN EFFECT...
14751 12741 12737. WATERSPOUTS LIKELY. WAVES 8 TO 11 FT
OCCASIONALLY TO 14 FT SUBSIDING TO 6 TO 9 FT OCCASIONALLY TO 11 FT
TONIGHT. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO 6
FT OCCASIONALLY TO 8 FT SATURDAY.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...
14751 12747 11737 11727. CHANCE OF WATERSPOUTS TONIGHT AND
SATURDAY MORNING. WAVES 10 TO 14 FT OCCASIONALLY TO 18 FT
TONIGHT. WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT SUBSIDING TO 4 TO 7
FT OCCASIONALLY TO 9 FT SATURDAY.

$$

IZZI



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