Great Lakes Forecast
Issued by NWS

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 260850
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
250 AM CST SUN FEB 26 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 30.3 INCHES ACROSS THE LOWER
MISSISSIPPI VALLEY WILL MOVE TO THE MID-ATLANTIC BY THIS EVENING.
MEANWHILE...LOW PRESSURE OF 29.6 INCHES JUST NORTH OF LAKE
SUPERIOR THIS MORNING WILL STEER A COLD FRONT ACROSS THE NORTHERN
PART OF THE LAKE THIS EVENING. THIS LOW WILL MOVE TO CENTRAL
QUEBEC BY OVERNIGHT. A HIGH PRESSURE RIDGE AVERAGING 30.2 INCHES
WILL MOVE OVER THE LAKE EARLY MONDAY MORNING BEFORE SHIFTING EAST.
LOW PRESSURE OF 29.7 INCHES ACROSS THE CENTRAL PLAINS TUESDAY
MORNING WILL MOVE TO SOUTHERN LAKE MICHIGAN BY TUESDAY EVENING.
ANOTHER LOW PRESSURE WILL MOVE FROM THE OZARKS LATE TUESDAY NIGHT
TO THE CENTRAL GREAT LAKES BY MIDDAY WEDNESDAY...MERGING WITH THE
FIRST LOW AND DEEPENING TO 29.3 INCHES BY WEDNESDAY EVENING. THIS
LOW WILL CONTINUE TO DEEPEN TO 29.0 INCHES AS IT MOVES UP THE ST.
LAWRENCE VALLEY INTO EARLY THURSDAY.


LMZ261-362-364-366-563-565-261630-
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-
250 AM CST SUN FEB 26 2017

TWO RIVERS WI TO MANISTEE MI NORTH...

...GALE WARNING IN EFFECT FROM 8 AM CST THIS MORNING THROUGH THIS
EVENING...

.TODAY...SOUTHWEST WINDS TO 30 KT INCREASING TO GALES TO 35
KT LATE THIS MORNING. CHANCE OF SNOW SHOWERS. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT BUILDING TO 6 TO 9 FT OCCASIONALLY TO 11 FT.
.TONIGHT...WEST WINDS TO 30 KT BECOMING NORTHWEST 10 TO 20 KT
AFTER MIDNIGHT. OCCASIONAL GALE FORCE GUSTS EARLY IN THE EVENING.
SLIGHT CHANCE OF SNOW SHOWERS IN THE EVENING. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.MONDAY...SOUTH WINDS 10 TO 15 KT INCREASING TO 15 TO 25 KT BY
EARLY AFTERNOON. WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.MONDAY NIGHT...SOUTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT
AFTER MIDNIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TUESDAY...SOUTHEAST WINDS 15 TO 25 KT BECOMING SOUTH 10 TO
20 KT. CHANCE OF RAIN AND SNOW SHOWERS IN THE MORNING...THEN
CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT.
.TUESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH 15 TO
25 KT. RAIN SHOWERS LIKELY. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.WEDNESDAY...NORTH WINDS TO 30 KT. CHANCE OF SNOW SHOWERS. WAVES
4 TO 7 FT OCCASIONALLY TO 9 FT.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20
KT. CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 2 TO 4 FT.

$$

LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-261630-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
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 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 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-
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
250 AM CST SUN FEB 26 2017

TWO RIVERS WI TO MANISTEE MI SOUTH...

...GALE WARNING IN EFFECT FROM 8 AM CST THIS MORNING THROUGH THIS
AFTERNOON...

.TODAY...SOUTHWEST WINDS 20 TO 25 KT INCREASING TO 30 KT AFTER
SUNRISE...AND THEN INCREASING TO GALES TO 35 KT LATE THIS MORNING.
OCCASIONAL GALES TO 40 KT EARLY THIS AFTERNOON. SCATTERED FLURRIES
THIS MORNING. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT BUILDING TO 6
TO 9 FT OCCASIONALLY TO 11 FT.
.TONIGHT...SOUTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT
AFTER MIDNIGHT AND TO 10 TO 20 KT LATE. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KT BECOMING SOUTH 15 TO 25 KT
LATE IN THE MORNING. WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.MONDAY NIGHT...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHEAST 20 TO
25 KT. CHANCE OF RAIN SHOWERS OVERNIGHT. WAVES 3 TO 6 FT
OCCASIONALLY TO 8 FT.
.TUESDAY...SOUTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.
CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO 2 TO 4 FT.
.TUESDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT VEERING TO NORTH
15 TO 25 KT. CHANCE OF RAIN SHOWERS. WAVES 2 TO 4 FT BUILDING TO 3
TO 5 FT OCCASIONALLY TO 5 FT.
.WEDNESDAY...NORTH WINDS TO 30 KT. RAIN AND SNOW SHOWERS LIKELY.
WAVES BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO
20 KT. CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT.

$$

LMZ761-261630-
MAFOR 2610/
MICHIGAN NORTH...GALE WARNING IN EFFECT...12540 13550 11640 11650
11630 11720. CHANCE OF SNOW SHOWERS TODAY. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT BUILDING TO 6 TO 9 FT OCCASIONALLY TO 11 FT
BY EARLY AFTERNOON. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT EARLY
THIS EVENING SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT OVERNIGHT.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...11530 11540 13550 12540
11530. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT BUILDING TO 6 TO 9 FT
OCCASIONALLY TO 11 FT BY EARLY AFTERNOON. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT THIS EVENING SUBSIDING TO 3 TO 5 FT
OCCASIONALLY TO 7 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


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