Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 232041
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
241 PM 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
LOWER MISSISSIPPI RIVER VALLEY THIS AFTERNOON WILL EXTEND TO THE
OHIO RIVER VALLEY BY THIS EVENING...THEN SHIFT OVER THE ATLANTIC
COAST BY TUESDAY. FARTHER NORTH...LOW PRESSURE OF 29.3 INCHES
WILL TRACK ACROSS NORTHERN ONTARIO TONIGHT AND INTO TUESDAY
MORNING...REACHING WESTERN QUEBEC BY TUESDAY NIGHT. THIS FEATURE
WILL STEER A COLD FRONT ACROSS THE LAKE LATE TUESDAY
AFTERNOON....WITH HIGHER END GALES EXPECTED IN ADVANCE OF THIS
FRONT AND SOME GALES IN ITS WAKE AS WELL. FOLLOWING THIS
SYSTEM...HIGH PRESSURE OF 30.7 INCHES WILL BUILD INTO THE PLAINS
AND MIDWEST REGION WEDNESDAY NIGHT THROUGH FRIDAY.

LMZ261-362-364-366-563-565-567-868-240500-
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-
241 PM CST MON FEB 23 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

...GALE WARNING IN EFFECT FROM 9 PM CST THIS EVENING THROUGH
TUESDAY EVENING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 9 PM CST THIS
EVENING THROUGH TUESDAY EVENING...

.TONIGHT...SOUTHWEST WINDS 15 TO 25 KT INCREASING TO GALES TO 40 KT
FROM LATE EVENING ON. A FEW GUSTS TO 45 KT GALES POSSIBLE LATE.
HEAVY FREEZING SPRAY. CHANCE OF SNOW SHOWERS OVERNIGHT. WAVES 4 TO
7 FT OCCASIONALLY TO 9 FT BUILDING TO 12 TO 16 FT OCCASIONALLY TO
20 FT OVERNIGHT.
.TUESDAY...SOUTHWEST GALES TO 40 KT BECOMING NORTHWEST TO 35 KT
GALES IN THE AFTERNOON. HEAVY FREEZING SPRAY. SNOW SHOWERS. WAVES
12 TO 16 FT OCCASIONALLY TO 20 FT.
.TUESDAY NIGHT...NORTHWEST GALES TO 35 KT EASING TO 30 KT EARLY IN
THE EVENING...THEN DIMINISHING TO 15 TO 25 KT LATE. HEAVY
FREEZING SPRAY IN THE EVENING. CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
.WEDNESDAY...NORTH WINDS 10 TO 20 KT. SNOW SHOWERS LIKELY IN THE
MORNING...THEN CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES
SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT IN THE AFTERNOON.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 20 KT. CHANCE OF SNOW
SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY...NORTHWEST WINDS 10 TO 20 KT. CHANCE OF SNOW SHOWERS
IN THE MORNING. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY NIGHT...NORTHWEST WINDS 10 TO 15 KT. SLIGHT CHANCE OF
SNOW SHOWERS. WAVES 2 TO 4 FT.
.FRIDAY...WEST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT IN THE
AFTERNOON. WAVES 2 TO 4 FT.
.SATURDAY...SOUTHWEST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT
IN THE AFTERNOON. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.

WAVE FORECAST IS FOR ICE FREE AREAS

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-240500-
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-
241 PM CST MON FEB 23 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

...GALE WARNING IN EFFECT FROM 9 PM CST THIS EVENING THROUGH
TUESDAY EVENING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 9 PM CST THIS
EVENING THROUGH TUESDAY EVENING...

.TONIGHT...SOUTHWEST WINDS 10 TO 20 KT INCREASING TO GALES TO 40
KT LATE THIS EVENING AND OVERNIGHT. HEAVY FREEZING SPRAY. WAVES 3 TO
5 FT OCCASIONALLY TO 7 FT BUILDING TO 10 TO 14 FT OCCASIONALLY TO
18 FT OVERNIGHT.
.TUESDAY...SOUTHWEST GALES TO 40 KT EASING TO 35 KT AND BECOMING
WEST IN THE AFTERNOON. A FEW GUSTS TO 45 KT GALES POSSIBLE IN THE
MORNING. HEAVY FREEZING SPRAY. CHANCE OF SNOW SHOWERS. WAVES 12 TO
16 FT OCCASIONALLY TO 20 FT.
.TUESDAY NIGHT...NORTHWEST GALES TO 35 KT EASING TO 30 KT
IN THE EVENING...THEN DIMINISHING TO 15 TO 25 KT LATE. HEAVY
FREEZING SPRAY IN THE EVENING. CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 6 TO 9 FT OCCASIONALLY TO 11 FT OVERNIGHT.
.WEDNESDAY...NORTH WINDS 10 TO 20 KT. CHANCE OF SNOW SHOWERS.
WAVES SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT IN THE
AFTERNOON.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KT. CHANCE OF SNOW
SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY...NORTH WINDS 10 TO 20 KT. CHANCE OF SNOW SHOWERS IN
THE MORNING...THEN SNOW SHOWERS LIKELY IN THE AFTERNOON. WAVES
3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY NIGHT...NORTHWEST WINDS 10 TO 20 KT. CHANCE OF SNOW
SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.FRIDAY...WEST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT IN THE
AFTERNOON. WAVES 2 TO 4 FT.
.SATURDAY...SOUTHWEST WINDS 10 TO 20 KT BECOMING SOUTH 15 TO
25 KT IN THE AFTERNOON. WAVES 2 TO 4 FT.

WAVE FORECAST IS FOR ICE FREE AREAS

$$

LMZ761-240500-
MAFOR 2322/
MICHIGAN NORTH...GALE WARNING IN EFFECT...
11530 12552 12552 19562 11557 11657 11657 19757. HEAVY FREEZING
SPRAY. CHANCE OF SNOW SHOWERS AFTER MIDNIGHT TONIGHT. WAVES 4 TO
7 FT OCCASIONALLY TO 9 FT BUILDING TO 12 TO 16 FT OCCASIONALLY TO
20 FT TONIGHT AND TUESDAY.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...
11520 11530 19542 13552 12552 19562 11652. HEAVY FREEZING SPRAY.
CHANCE OF SNOW SHOWERS TUESDAY. WAVES 3 TO 5 FT OCCASIONALLY TO 7
FT BUILDING TO 10 TO 14 FT OCCASIONALLY TO 18 FT TONIGHT...AND TO
12 TO 16 FT OCCASIONALLY TO 20 FT TUESDAY.

$$

KJB




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