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National Weather Service Marine Forecast FZUS63 KMKX

FZUS63 KMKX 231447
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
847 AM CST Sat Feb 23 2019

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

Strong low pressure of 29.5 inches developing over the panhandle
of Oklahoma will rapidly move northeast through Kansas this
afternoon to northern Lake Michigan by early Sunday morning,
deepening to 28.9 inches. Strong easterly winds will develop very
quickly late this afternoon and evening, remaining strong through
Sunday night. Winds will shift to westerly as the low lifts
through the lake. Southwest gales are expected late tonight,
remaining at gale force levels as they veer to the west-
northwest on Sunday and northwest Sunday night. It appears
increasingly likely that there will be a period of storm force
winds from late Sunday morning into early Sunday evening, and a
Storm Watch is in effect for this time period. Winds will
diminish by Monday. Heavy freezing spray may also occur Sunday
night into Monday.

High pressure will return by early next week, bringing lighter
wind and wave conditions into the middle part of next week.

LMZ261-362-364-366-563-565-567-868-232230-
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-
847 AM CST Sat Feb 23 2019

SHEBOYGAN WI TO PENTWATER MI NORTH...

...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY
MORNING...
...STORM WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...
...GALE WARNING IN EFFECT FROM SUNDAY EVENING THROUGH LATE SUNDAY
NIGHT...

REST OF TODAY
Southeast winds 10 to 20 kt becoming east to
30 kt. Chance of snow, rain and slight chance of light freezing
rain through mid morning, then rain with possible snow and
freezing rain this afternoon. Waves 2 to 4 ft.

TONIGHT
East winds to 30 kt veering to southwest gales to
35 kt. Patchy fog. Rain with a chance of freezing rain. Waves
3 to 5 ft building to 5 to 8 ft occasionally to 10 ft.

SUNDAY
West gales to 45 kt. Storm force winds to 50 kt possible.
Rain and snow in the morning, then chance of snow and rain in the
afternoon. Waves 7 to 10 ft occasionally to 13 ft building to 12
to 16 ft occasionally to 21 ft.

SUNDAY NIGHT
Northwest gales to 45 kt with possible storm
force gusts to 50 kt diminishing to gales to 40 kt overnight.
Heavy freezing spray. Chance of snow. Waves 12 to 16 ft
occasionally to 21 ft.

MONDAY
Northwest winds to 30 kt diminishing to 15 to 25 kt.
Heavy freezing spray. Waves 6 to 9 ft occasionally to 12 ft
subsiding to 4 to 6 ft occasionally to 8 ft.

MONDAY NIGHT
Northwest winds 15 to 25 kt. Heavy freezing
spray. Waves 2 to 4 ft.

TUESDAY
Northwest winds 10 to 20 kt. Freezing spray. Chance of
snow. Waves 1 to 3 ft.

WEDNESDAY
Southwest winds 15 to 25 kt becoming west. Freezing
spray. Chance of snow. Waves 3 to 5 ft. 

Wave forecast is for ice free areas



LMZ080-669-671-673-675-777-779-870-872-874-876-878-232230-
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-
847 AM CST Sat Feb 23 2019

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY
MORNING...
...STORM WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...
...GALE WARNING IN EFFECT FROM SUNDAY EVENING THROUGH LATE SUNDAY
NIGHT...

REST OF TODAY
Southeast winds 15 to 25 kt. Chance of rain,
snow and slight chance of light freezing rain through mid
morning, then rain with a chance of light freezing rain this
afternoon. Waves 3 to 5 ft.

TONIGHT
Southeast winds 15 to 25 kt veering southwest to 30 kt
after midnight, then increasing to gales to 40 kt late. Patchy
fog. Rain and slight chance of thunderstorms in the evening, then
chance of rain overnight. Waves 4 to 6 ft occasionally to 8 ft
building to 6 to 9 ft occasionally to 12 ft.

SUNDAY
West gales to 45 kt with possible storm force gusts to
50 kt. Chance of rain and snow in the morning. Waves 14 to 18 ft
occasionally to 23 ft.

SUNDAY NIGHT
West gales to 45 kt with possible storm force
gusts to 50 kt, becoming northwest gales to 45 kt overnight.
Freezing spray in the evening, then heavy freezing spray
overnight. Waves 14 to 18 ft occasionally to 23 ft subsiding to 12
to 16 ft occasionally to 21 ft.

MONDAY
Northwest gales to 35 kt diminishing to 15 to 25 kt in
the afternoon. Heavy freezing spray in the morning, then freezing
spray in the afternoon. Waves 8 to 12 ft occasionally to 16 ft
subsiding to 4 to 7 ft occasionally to 9 ft.

MONDAY NIGHT
Northwest winds 15 to 25 kt. Freezing spray.
Waves 2 to 4 ft.

TUESDAY
North winds 10 to 20 kt. Freezing spray. Chance of
snow. Waves 2 to 4 ft.

WEDNESDAY
West winds 15 to 25 kt becoming northwest. Chance of
snow. Waves 3 to 5 ft. 

Wave forecast is for ice free areas



&&STORM

LMZ761-232230-
MAFOR 2316/
MICHIGAN NORTH...GALE WARNING IN EFFECT...12237 11247 12246 11346
11656 11667. Chance of snow and rain late this morning. Chance of
freezing rain tonight. Waves 3 to 5 ft building to 5 to 8 ft
occasionally to 10 ft tonight. Waves 8 to 11 ft occasionally to 14
ft Sunday morning. Wave heights are for ice free areas.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...14336 11436 11540 12660.
Chance of light freezing rain this afternoon. Chance of rain
overnight. Chance of rain and snow Sunday morning. Waves 3 to 5 ft
this afternoon. Waves 4 to 7 ft occasionally to 9 ft building to
7 to 10 ft occasionally to 13 ft tonight. Waves 10 to 14 ft
occasionally to 18 ft Sunday morning.



Cronce

Experimental modernized open lake forecast is available online at
weather.gov/mkx/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes