Great Lakes Forecast
Issued by NWS

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622
FZUS63 KLOT 240911 CCA
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN...CORRECTED
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
311 AM CST FRI FEB 24 2017

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 OF THE HIGHEST 1/3 OF THE WAVE, ALONG WITH THE
AVERAGE HEIGHT OF THE HIGHEST 10% OF THE WAVES WHICH WILL
OCCASIONALLY BE ENCOUNTERED.

.SYNOPSIS...LOW PRESSURE OF 29.4 INCHES OVER WESTERN ILLINOIS
EARLY THIS MORNING WILL MOVE TO THE SOUTHERN PART OF LAKE MICHIGAN
THIS AFTERNOON AND THEN SLOWLY TO LAKE HURON BY LATE TONIGHT. AS
THIS LOW MOVES ONTO QUEBEC AND DEEPENS SATURDAY...RIDGING WITH A
CENTRAL PRESSURE OF 30.2 INCHES WILL MOVE ACROSS THE LAKE SATURDAY
NIGHT. LOW PRESSURE AROUND 29.7 INCHES WILL THEN PROGRESS QUICKLY
EASTWARD ACROSS LAKE SUPERIOR ON SUNDAY BEFORE RIDGING MOVES BACK
OVER THE LAKE ON MONDAY.

LMZ261-362-364-366-563-565-242115-
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-
311 AM CST FRI FEB 24 2017

TWO RIVERS WI TO MANISTEE MI NORTH...

...GALE WARNING IN EFFECT THROUGH THIS EVENING...
...GALE WATCH IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY
AFTERNOON...

.TODAY...NORTHEAST GALES TO 35 KT INCREASING TO 40 KT SHORTLY
AFTER DAYBREAK. SNOW SHOWERS AND THEN A WINTERY MIX THIS AFTERNOON.
WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT BUILDING TO 8 TO 11 FT
OCCASIONALLY TO 14 FT.
.TONIGHT...NORTHEAST GALES TO 40 KT BECOMING NORTH WINDS TO 30 KT
LATE THIS EVENING...AND THEN INCREASING TO GALES TO 35 KT LATE.
SNOW SHOWERS. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT.
.SATURDAY...NORTHWEST GALES TO 35 KT. SNOW SHOWERS IN THE
MORNING,...THEN CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES
7 TO 10 FT OCCASIONALLY TO 13 FT.
.SATURDAY NIGHT...WEST WINDS TO 30 KT DIMINISHING TO 20 TO 25 KT
OVERNIGHT. CHANCE OF SNOW SHOWERS IN THE EVENING. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO 8
FT.
.SUNDAY...SOUTHWEST WINDS TO 30 KT. CHANCE OF SNOW IN THE
MORNING...THEN CHANCE OF SNOW AND RAIN IN THE AFTERNOON. WAVES 4
TO 7 FT OCCASIONALLY TO 9 FT BUILDING TO 5 TO 8 FT OCCASIONALLY TO
10 FT.
.SUNDAY NIGHT...WEST WINDS TO 30 KT DIMINISHING TO 10 TO 20 KT
OVERNIGHT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO
5 FT OCCASIONALLY TO 7 FT.
.MONDAY...SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH 10 TO 20 KT.
WAVES 1 TO 3 FT.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
RAIN AND SNOW LIKELY. WAVES 2 TO 4 FT.

$$

LMZ567-669-671-673-675-868-870-872-874-876-242115-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 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 PENTWATER TO MANISTEE MI 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-
311 AM CST FRI FEB 24 2017

TWO RIVERS WI TO MANISTEE MI SOUTH TO WINTHROP HARBOR IL TO SOUTH
HAVEN MI...

...GALE WARNING IN EFFECT UNTIL NOON CST TODAY...
...GALE WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY
AFTERNOON...

.TODAY...NORTHEAST GALES TO 40 KT EASING TO 35 KT LATE THIS
MORNING AND THEN TO 30 KT EARLY THIS AFTERNOON. AREAS OF FOG. A
WINTERY MIX THIS MORNING BECOMING RAIN SHOWERS BY EARLY THIS
AFTERNOON. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT.
.TONIGHT...NORTH WINDS TO 30 KT BECOMING NORTHWEST LATE. RAIN
SHOWERS LIKELY IN THE EVENING BECOMING SNOW SHOWERS OVERNIGHT.
WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT.
.SATURDAY...NORTHWEST GALES TO 35 KT DIMINISHING TO 30 KT LATE IN
THE DAY. SNOW SHOWERS LIKELY IN THE MORNING...THEN CHANCE OF SNOW
SHOWERS IN THE AFTERNOON. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT.
.SATURDAY NIGHT...WEST WINDS TO 30 KT. WAVES 6 TO 9 FT
OCCASIONALLY TO 11 FT.
.SUNDAY...SOUTHWEST WINDS TO 30 KT. CHANCE OF SNOW IN THE
AFTERNOON. WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT.
.SUNDAY NIGHT...WEST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.MONDAY...SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH 10 TO 20 KT.
WAVES SUBSIDING TO 1 TO 3 FT.
.TUESDAY...SOUTHEAST WINDS 15 TO 25 KT BECOMING SOUTH. RAIN
LIKELY WITH A CHANCE OF SNOW. WAVES 2 TO 4 FT.

$$

LMZ080-777-779-878-242115-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
311 AM CST FRI FEB 24 2017

WINTHROP HARBOR IL TO SOUTH HAVEN MI SOUTH...

.TODAY...NORTHEAST WINDS 20 TO 25 KT BECOMING NORTH 10 TO 20 KT
THIS AFTERNOON. AREAS OF FOG. RAIN SHOWERS LIKELY WITH A CHANCE
OF THUNDERSTORMS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.TONIGHT...WEST WINDS 10 TO 20 KT INCREASING TO 30 KT BY EARLY
OVERNIGHT. CHANCE OF RAIN SHOWERS IN THE EVENING...THEN SNOW
SHOWERS LIKELY AFTER MIDNIGHT. WAVES 3 TO 6 FT OCCASIONALLY TO 8
FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
.SATURDAY...NORTHWEST WINDS TO 30 KT BECOMING WEST. SNOW SHOWERS
LIKELY IN THE MORNING...THEN CHANCE OF SNOW SHOWERS IN THE
AFTERNOON. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT.
.SATURDAY NIGHT...WEST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT.
.SUNDAY...SOUTHWEST WINDS TO 30 KT. WAVES 5 TO 8 FT OCCASIONALLY
TO 10 FT.
.SUNDAY NIGHT...SOUTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO
25 KT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO
5 FT OCCASIONALLY TO 7 FT.
.MONDAY...SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTHEAST. WAVES
SUBSIDING TO 1 TO 3 FT.
.TUESDAY...SOUTH WINDS 15 TO 25 KT. RAIN LIKELY. WAVES 2 TO 4 FT.


$$

LMZ761-242115-
MAFOR 2410/
MICHIGAN NORTH...GALE WARNING IN EFFECT...15157 12247. AREAS OF
FOG. WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT BUILDING TO 8 TO 11 FT
OCCASIONALLY TO 14 FT TODAY. WAVES 7 TO 10 FT OCCASIONALLY TO 13
FT TONIGHT.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...13136 12226 11620 11630
11647. AREAS OF FOG TODAY. CHANCE OF RAIN SHOWERS THIS EVENING.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT TODAY. WAVES 3 TO 6 FT
OCCASIONALLY TO 8 FT THIS EVENING BUILDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT OVERNIGHT.

$$

MTF

EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/LOT/GLFTABLE

GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES



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