Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 030323 AAA
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN...UPDATED
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1023 PM CDT SUN AUG 2 2015

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 29.4 INCH LOW OVER HUDSON BAY WILL SLOWLY WEAKEN TO
29.5 INCHES AS IT DRIFTS EASTWARD IN THE COMING DAYS. A TRAILING
COLD FRONT AND TROUGH AXIS WILL CLEAR THE LAKE TONIGHT.
MEANWHILE...HIGH PRESSURE AVERAGING 30.0 INCHES EXTENDS FROM THE
CENTRAL PLAINS THROUGH THE OHIO VALLEY. THIS HIGH WILL THEN SPREAD
OVER THE WESTERN GREAT LAKES MONDAY EVENING AND SHIFT EAST OF THE
LAKE MID NEXT WEEK. A 29.7 INCH LOW WILL PUSH NORTHEAST FROM THE
MISSOURI VALLEY AND THROUGH THE OHIO VALLEY LATER IN THE WEEK.

LMZ261-362-364-366-563-565-567-868-030800-
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-
1023 PM CDT SUN AUG 2 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.REST OF TONIGHT...NORTHWEST WINDS 15 TO 25 KT DIMINISHING TO
10 TO 20 KT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 2
TO 4 FT.
.MONDAY...NORTHWEST WINDS 10 TO 20 KT. CHANCE OF SHOWERS IN THE
AFTERNOON. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
.MONDAY NIGHT...NORTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. WAVES 1 TO 2 FT.
.TUESDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH 10 TO
20 KT. CHANCE OF SHOWERS. WAVES 1 TO 2 FT.
.TUESDAY NIGHT...NORTH WINDS 10 TO 20 KT DIMINISHING TO 5 TO
10 KT OVERNIGHT. WAVES 1 TO 2 FT.
.WEDNESDAY...NORTH WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
.THURSDAY...NORTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.FRIDAY...NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH. WAVES 2 TO
4 FT.

$$

LMZ669-671-673-675-870-872-874-030800-
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 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-
1023 PM CDT SUN AUG 2 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH TO WINTHROP HARBOR IL TO SOUTH
HAVEN MI

.REST OF TONIGHT...NORTHWEST WINDS 15 TO 25 KT DIMINISHING TO
10 TO 20 KT. SLIGHT CHANCE OF THUNDERSTORMS LATE THIS EVENING.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT.
.MONDAY...NORTHWEST WINDS 10 TO 20 KT. CHANCE OF SHOWERS IN THE
AFTERNOON. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
.MONDAY NIGHT...NORTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. WAVES 1 TO 2 FT.
.TUESDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH 10 TO
20 KT. CHANCE OF SHOWERS. WAVES 1 TO 2 FT.
.TUESDAY NIGHT...NORTH WINDS 10 TO 20 KT DIMINISHING TO 5 TO
10 KT OVERNIGHT. WAVES 1 TO 2 FT.
.WEDNESDAY...NORTH WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
.THURSDAY...NORTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.FRIDAY...NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH. WAVES 2 TO
4 FT.

$$

LMZ876-878-030800-
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-
1023 PM CDT SUN AUG 2 2015

WILMETTE HARBOR IL TO ST. JOSEPH MI SOUTH TO ROCK ISLAND PASSAGE
TO CHARLEVOIX MI

...SEVERE THUNDERSTORM WATCH 463 IN EFFECT UNTIL 1 AM CDT
MONDAY...

.REST OF TONIGHT...WEST WINDS TO 30 KT DIMINISHING TO 10 TO 20 KT
AFTER MIDNIGHT...THEN BECOMING NORTHWEST LATE. SHOWERS AND
THUNDERSTORMS LATE THIS EVENING. WAVES 4 TO 6 FT OCCASIONALLY TO
8 FT SUBSIDING TO 2 TO 4 FT.
.MONDAY...NORTHWEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.MONDAY NIGHT...NORTHWEST WINDS 10 TO 15 KT DIMINISHING TO 5 TO
10 KT. WAVES 1 TO 2 FT.
.TUESDAY...NORTHWEST WINDS 5 TO 10 KT BECOMING NORTH. WAVES 1 TO
2 FT.
.TUESDAY NIGHT...EAST WINDS 5 TO 10 KT BECOMING NORTHEAST. WAVES
1 FT OR LESS.
.WEDNESDAY...EAST WINDS 5 TO 10 KT BECOMING NORTHEAST. WAVES 1 TO
2 FT.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KT BECOMING EAST.
WAVES 1 TO 3 FT.
.THURSDAY...NORTHEAST WINDS 10 TO 15 KT INCREASING TO 10 TO
20 KT. CHANCE OF SHOWERS. WAVES 2 TO 4 FT.
.FRIDAY...NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH. WAVES 2 TO
4 FT.

$$

LMZ080-777-779-030800-
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-
1023 PM CDT SUN AUG 2 2015

WINTHROP HARBOR IL TO SOUTH HAVEN MI SOUTH

...SEVERE THUNDERSTORM WATCH 465 IN EFFECT UNTIL 2 AM CDT
MONDAY...

.REST OF TONIGHT...WEST WINDS TO 30 KT DIMINISHING TO 10 TO 20
KT AFTER MIDNIGHT...THEN BECOMING NORTHWEST LATE. SHOWERS AND
THUNDERSTORMS LATE THIS EVENING...THEN SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS OVERNIGHT. WAVES 4 TO 6 FT OCCASIONALLY TO 8
FT SUBSIDING TO 1 TO 3 FT.
.MONDAY...NORTHWEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.MONDAY NIGHT...NORTHWEST WINDS 10 TO 15 KT DIMINISHING TO 5 TO
10 KT. WAVES 1 TO 2 FT.
.TUESDAY...NORTHWEST WINDS 5 TO 10 KT BECOMING NORTH. WAVES 1 TO
2 FT.
.TUESDAY NIGHT...EAST WINDS 5 TO 10 KT BECOMING NORTHEAST. WAVES
1 FT OR LESS.
.WEDNESDAY...EAST WINDS 5 TO 10 KT BECOMING NORTHEAST. WAVES 1 TO
2 FT.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KT BECOMING EAST.
WAVES 1 TO 3 FT.
.THURSDAY...NORTHEAST WINDS 10 TO 15 KT INCREASING TO 10 TO
20 KT. CHANCE OF SHOWERS. WAVES 2 TO 4 FT.
.FRIDAY...NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH. WAVES 2 TO
4 FT.

$$
LMZ761-030800-
MAFOR 0303/
MICHIGAN NORTH 11730 11720 15720. WAVES 3 TO 5 FT OCCASIONALLY
TO 7 FT SUBSIDING TO 2 TO 4 FT TONIGHT AND TO 1 TO 3 FT MONDAY.

MICHIGAN SOUTH 11549 19640 11730 11720 14720 11710. WAVES 4 TO
6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT OVERNIGHT.
WAVES 2 TO 4 FT MONDAY AND MONDAY EVENING.

$$



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