Great Lakes Forecast
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FZUS63 KLOT 210306
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
906 PM CST MON FEB 20 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...HIGH PRESSURE OF 30.4 INCHES OVER QUEBEC WILL MOVE
EAST WHILE LOW PRESSURE OF 29.5 INCHES OVER ONTARIO WILL MOVE TO
HUDSON BAY TONIGHT AND DEEPEN TO 29.2 INCHES AS IT DOES. AN
ASSOCIATED COLD FRONT WILL PASS OVER THE LAKE EARLY TUESDAY
MORNING. A WEAK HIGH PRESSURE RIDGE AVERAGING 29.9 INCHES WILL
THEN BUILD OVER THE SOUTHERN MISSISSIPPI VALLEY TUESDAY AFTERNOON.
A LOW OF 29.6 INCHES THEN MOVES OVER THE NORTHERN PLAINS
WEDNESDAY AND DEEPENS TO AROUND 29.4 INCHES AS IT PASSES OVER THE
WESTERN GREAT LAKES WEDNESDAY EVENING. A STRONG LOW PRESSURE OF
AROUND 29.2 INCHES IS THEN FORECAST TO MOVE NORTHEAST INTO THE
LOWER GREAT LAKES FRIDAY NIGHT INTO EARLY SATURDAY.

LMZ261-362-364-366-563-565-567-868-211030-
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-
906 PM CST MON FEB 20 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...SOUTHEAST WINDS TO 30 KT BECOMING SOUTHWEST.
OCCASIONAL GALE FORCE GUSTS. CHANCE OF RAIN SHOWERS THROUGH EARLY
EVENING...THEN RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS
OVERNIGHT. WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT.
.TUESDAY...SOUTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO
15 KT BY EARLY AFTERNOON. CHANCE OF RAIN SHOWERS IN THE MORNING.
WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT BY THE AFTERNOON.
.TUESDAY NIGHT...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST 15 TO
25 KT LATE IN THE EVENING. WAVES 2 TO 4 FT BUILDING TO 3 TO 6 FT
OCCASIONALLY TO 8 FT.
.WEDNESDAY...SOUTHWEST WINDS 10 TO 20 KT BECOMING SOUTH. WAVES
3 TO 5 FT OCCASIONALLY TO 7 FT.
.WEDNESDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KT BECOMING NORTHWEST.
CHANCE OF FREEZING RAIN OVERNIGHT. WAVES 2 TO 4 FT.
.THURSDAY...NORTHWEST WINDS 10 TO 20 KT BECOMING NORTH. WAVES
2 TO 4 FT.
.THURSDAY NIGHT...NORTHEAST WINDS 15 TO 25 KT INCREASING TO
30 KT. CHANCE OF RAIN AND SNOW SHOWERS. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
.FRIDAY...EAST GALES TO 35 KT BECOMING NORTHEAST. RAIN AND SNOW
SHOWERS. WAVES BUILDING TO 7 TO 10 FT OCCASIONALLY TO 13 FT.
.SATURDAY...NORTH GALES TO 40 KT BECOMING NORTHWEST GALES TO
35 KT. SNOW SHOWERS LIKELY. WAVES 6 TO 9 FT OCCASIONALLY TO 11
FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-211030-
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-
906 PM CST MON FEB 20 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...SOUTHEAST WINDS TO 30 KT BECOMING SOUTHWEST.
CHANCE OF RAIN SHOWERS THROUGH EARLY EVENING...THEN RAIN SHOWERS
LIKELY WITH SLIGHT CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 5 TO 8
FT OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO 8
FT.
.TUESDAY...SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST 10 TO 15 KT
EARLY IN THE AFTERNOON. CHANCE OF RAIN SHOWERS IN THE MORNING.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT.
.TUESDAY NIGHT...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST.
WAVES 1 TO 3 FT.
.WEDNESDAY...SOUTHWEST WINDS 10 TO 20 KT BECOMING SOUTH. WAVES
2 TO 4 FT.
.WEDNESDAY NIGHT...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST.
WAVES 2 TO 4 FT.
.THURSDAY...NORTHWEST WINDS 10 TO 20 KT BECOMING NORTH. CHANCE OF
RAIN SHOWERS IN THE AFTERNOON. WAVES 2 TO 4 FT.
.THURSDAY NIGHT...NORTHEAST WINDS 15 TO 25 KT BECOMING EAST TO 30
KT. RAIN SHOWERS. WAVES BUILDING TO 6 TO 9 FT OCCASIONALLY TO 11
FT.
.FRIDAY...EAST WINDS TO 30 KT BECOMING SOUTHEAST. RAIN SHOWERS
WITH A CHANCE OF THUNDERSTORMS. WAVES 7 TO 10 FT OCCASIONALLY TO
13 FT.
.SATURDAY...NORTHWEST GALES TO 35 KT. CHANCE OF RAIN AND SNOW
SHOWERS. WAVES 8 TO 11 FT OCCASIONALLY TO 14 FT.

$$
LMZ761-211030-
MAFOR 2104/
MICHIGAN NORTH 11346 11446 11546 11530 11620 12510 11420. CHANCE
OF RAIN SHOWERS TUESDAY MORNING. WAVES 6 TO 9 FT OCCASIONALLY TO
11 FT OVERNIGHT. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING
TO 3 TO 5 FT OCCASIONALLY TO 7 FT TUESDAY. WAVES 2 TO 4 FT TUESDAY
EVENING.

MICHIGAN SOUTH 11340 11446 11546 11520 12610 11510 11420. CHANCE
OF SHOWERS LATE THIS EVENING AND TUESDAY MORNING. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT
OVERNIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO
4 FT TUESDAY. WAVES 1 TO 3 FT TUESDAY EVENING.

$$


RODRIGUEZ

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

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


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.