Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 230906
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
306 AM CST MON FEB 23 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...HIGH PRESSURE OF 30.9 INCHES CENTERED OVER THE
MISSOURI RIVER VALLEY THIS MORNING WILL MOVE TO THE OHIO RIVER
VALLEY BY LATE TODAY. STRONG LOW PRESSURE OF 29.3 INCHES WILL THEN
TRACK ACROSS NORTHERN ONTARIO OVERNIGHT AND TUESDAY
MORNING...REACHING WESTERN QUEBEC TUESDAY NIGHT. THIS FEATURE WILL
STEER A COLD FRONT ACROSS THE LAKE DURING TUESDAY
AFTERNOON....WITH HIGHER END GALES EXPECTED IN ADVANCE OF THIS
FRONT AND SOME GALES BEHIND IT AS WELL. IN THE WAKE OF THIS
SYSTEM...HIGH PRESSURE OF 30.7 INCHES WILL BUILD INTO THE MIDWEST
WEDNESDAY NIGHT THROUGH FRIDAY.


LMZ261-362-364-366-563-565-567-868-231630-
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-
306 AM CST MON FEB 23 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH LATE TUESDAY
NIGHT...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM THIS EVENING
THROUGH LATE TUESDAY NIGHT...

.TODAY...WEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT LATE
THIS MORNING...THEN BECOMING SOUTHWEST 15 TO 25 KT EARLY THIS
AFTERNOON AND INCREASING TO 30 KT LATE. SCATTERED SNOW SHOWERS.
WAVES 3 TO 6 FT OCCASIONALLY TO 8 FT.
.TONIGHT...SOUTHWEST GALES TO 35 KT INCREASING TO 45 KT AFTER
MIDNIGHT. HEAVY FREEZING SPRAY. SNOW SHOWERS OVERNIGHT. WAVES 6
TO 9 FT OCCASIONALLY TO 11 FT BUILDING TO 12 TO 16 FT
OCCASIONALLY TO 20 FT.
.TUESDAY...SOUTHWEST GALES TO 35 KT BECOMING NORTHWEST TO 30 KT
WITH OCCASIONAL GALES IN THE AFTERNOON. HEAVY FREEZING SPRAY.
SNOW SHOWERS. WAVES 12 TO 16 FT OCCASIONALLY TO 20 FT SUBSIDING TO
6 TO 9 FT OCCASIONALLY TO 11 FT IN THE AFTERNOON.
.TUESDAY NIGHT...NORTHWEST WINDS TO 30 KT WITH OCCASIONAL GALES
EARLY...THEN DIMINISHING TO 15 TO 25 KT LATE. HEAVY FREEZING
SPRAY IN THE EVENING. SNOW SHOWERS LIKELY. WAVES SUBSIDING TO 4 TO
6 FT OCCASIONALLY TO 8 FT.
.WEDNESDAY...NORTH WINDS 10 TO 20 KT. CHANCE OF SNOW SHOWERS.
WAVES SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 20 KT. SLIGHT CHANCE OF SNOW
SHOWERS. WAVES 2 TO 4 FT.
.THURSDAY...NORTHWEST WINDS 10 TO 15 KT. SLIGHT CHANCE OF SNOW
SHOWERS. WAVES 2 TO 4 FT.
.FRIDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST 10 TO 20 KT
IN THE AFTERNOON. SLIGHT CHANCE OF SNOW SHOWERS. WAVES 2 TO 4 FT.

WAVE FORECAST IS FOR ICE FREE AREAS.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-231630-
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-
306 AM CST MON FEB 23 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH LATE TUESDAY
NIGHT...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM THIS EVENING
THROUGH LATE TUESDAY NIGHT...

.TODAY...NORTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT
BY MID MORNING...THEN BECOMING WEST EARLY THIS AFTERNOON BEFORE
BECOMING SOUTHWEST 15 TO 25 KT LATE. SCATTERED SNOW SHOWERS.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 2 TO 4 FT THIS
AFTERNOON.
.TONIGHT...SOUTHWEST WINDS TO 30 KT INCREASING TO GALES TO 40 KT
FROM LATE EVENING ON. HEAVY FREEZING SPRAY. SLIGHT CHANCE OF SNOW
SHOWERS OVERNIGHT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT
BUILDING TO 10 TO 14 FT OCCASIONALLY TO 18 FT OVERNIGHT.
.TUESDAY...SOUTHWEST GALES TO 45 KT EARLY EASING TO 35 KT BY EARLY
AFTERNOON...THEN BECOMING WEST LATE. HEAVY FREEZING SPRAY. CHANCE
OF SNOW SHOWERS. WAVES 12 TO 16 FT OCCASIONALLY TO 20 FT.
.TUESDAY NIGHT...WEST GALES TO 35 KT BECOMING NORTHWEST TO 30 KT
AFTER MIDNIGHT. HEAVY FREEZING SPRAY IN THE EVENING. CHANCE OF
SNOW SHOWERS. WAVES SUBSIDING TO 7 TO 10 FT OCCASIONALLY TO 13 FT
OVERNIGHT.
.WEDNESDAY...NORTH WINDS 10 TO 20 KT. CHANCE OF SNOW SHOWERS.
WAVES SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 20 KT. SLIGHT CHANCE OF SNOW
SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY...NORTH WINDS 10 TO 20 KT. SLIGHT CHANCE OF SNOW
SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.FRIDAY...WEST WINDS 10 TO 15 KT. SLIGHT CHANCE OF SNOW SHOWERS.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.

WAVE FORECAST IS FOR ICE FREE AREAS.

$$

LMZ761-231630-
MAFOR 2310/
MICHIGAN NORTH...GALE WARNING IN EFFECT...
12620 11610 11530 11540 12552 11562. SCATTERED SNOW SHOWERS TODAY.
SNOW SHOWERS OVERNIGHT. WAVES 3 TO 6 FT OCCASIONALLY TO 8 FT TODAY.
WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT BUILDING TO 12 TO 16 FT
OCCASIONALLY TO 20 FT TONIGHT.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...
12730 11720 11620 11530 11540 12552. SCATTERED SNOW SHOWERS TODAY.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 2 TO 4 FT THIS
AFTERNOON. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT BUILDING TO 10
TO 14 FT OCCASIONALLY TO 18 FT OVERNIGHT.

$$

MTF




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