Great Lakes Forecast
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000
FZUS63 KMKX 120830
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
230 AM CST Tue Feb 12 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...

Low pressure of 29.8 inches over Illinois this morning will lift
to southern Lake Huron by early evening, while strengthening to 29.3
inches. Northeast gales are expected today across northern Lake
Michigan, with gales then expanding to include the entire lake
tonight as winds become northwesterly. Gales will continue into
Wednesday morning. High pressure of 29.9 inches will then move
across Lake Michigan Wednesday night into Thursday morning with
much lighter winds expected.

Another low of 29.4 inches is then expected to develop over the
region Thursday night, as a cold front sweeps across the lake.
Winds will again be gusty from the northwest behind this front,
but should remain just under gales. Freezing spray will also be a
concern as colder air builds into the area.

LMZ261-362-364-366-563-565-567-868-121615-
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-
230 AM CST Tue Feb 12 2019

SHEBOYGAN WI TO PENTWATER MI NORTH...

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

.TODAY...East gales to 35 kt becoming northeast. Heavy freezing
spray. Snow with a chance of freezing rain this morning, then
snow with a chance of light freezing drizzle this afternoon.
Waves 5 to 8 ft occasionally to 10 ft.
.TONIGHT...Northeast winds to 30 kt becoming northwest gales to
40 kt. Freezing spray. Snow in the evening, then snow likely
overnight. Waves 6 to 9 ft occasionally to 12 ft.
.WEDNESDAY...Northwest gales to 35 kt becoming west 15 to 25 kt.
Heavy freezing spray in the morning, then freezing spray in the
afternoon. Snow likely in the morning, then chance of snow in the
afternoon. Waves 7 to 10 ft occasionally to 13 ft subsiding to
4 to 6 ft occasionally to 8 ft.
.WEDNESDAY NIGHT...Southwest winds 10 to 20 kt becoming south to
30 kt overnight. Waves 3 to 5 ft.
.THURSDAY...South winds 15 to 25 kt diminishing to 10 to 20 kt.
Chance of snow in the morning, then chance of snow and rain in
the afternoon. Waves 3 to 5 ft.
.THURSDAY NIGHT...Northwest winds 15 to 25 kt. Freezing spray.
Chance of snow. Waves 3 to 5 ft.
.FRIDAY...Northwest winds 15 to 25 kt. Freezing spray. Chance of
snow. Waves 3 to 5 ft.
.SATURDAY...North winds 10 to 20 kt diminishing to 10 to 15 kt.
Freezing spray. Waves 2 to 4 ft subsiding to 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-121615-
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-
230 AM CST Tue Feb 12 2019

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...GALE WARNING IN EFFECT FROM THIS AFTERNOON THROUGH WEDNESDAY
MORNING...

.TODAY...East winds to 30 becoming northwest gales to 35 kt late.
Snow, light freezing rain, chance of drizzle and light freezing
drizzle this morning, then snow with a chance of light freezing
drizzle this afternoon. Waves 5 to 8 ft occasionally to 10 ft
subsiding to 4 to 6 ft occasionally to 8 ft.
.TONIGHT...Northwest gales to 40 kt. Freezing spray. Snow likely
in the evening, then chance of snow overnight. Waves 6 to 9 ft
occasionally to 12 ft building to 8 to 12 ft occasionally to
16 ft.
.WEDNESDAY...Northwest gales to 40 kt becoming west 15 to 25 kt.
Freezing spray. Chance of snow. Waves 10 to 14 ft occasionally to
18 ft subsiding to 6 to 9 ft occasionally to 12 ft.
.WEDNESDAY NIGHT...Southwest winds 15 to 25 kt becoming south to
30 kt. Waves 4 to 7 ft occasionally to 9 ft.
.THURSDAY...South winds to 30 kt diminishing to 15 to 25 kt.
Chance of rain in the afternoon. Waves 4 to 6 ft occasionally to
8 ft.
.THURSDAY NIGHT...Southwest winds 15 to 25 kt becoming northwest
to 30 kt. Chance of snow and rain. Waves 3 to 5 ft.
.FRIDAY...Northwest winds to 30 kt diminishing to 15 to 25 kt.
Freezing spray. Chance of snow. Waves 3 to 5 ft.
.SATURDAY...Northeast winds 10 to 20 kt. Waves 2 to 4 ft.

$$

LMZ761-121615-
MAFOR 1210/
MICHIGAN NORTH...GALE WARNING IN EFFECT...14257 11157 12847
11757. Chance of freezing rain this morning. Chance of light
freezing drizzle this afternoon. Waves 4 to 7 ft occasionally to
9 ft building to 6 to 9 ft occasionally to 12 ft today. Waves 6
to 9 ft occasionally to 12 ft tonight. Wave heights are for ice
free areas.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...12247 11347 11647 12757 12750.
Chance of freezing rain, then chance of light freezing drizzle
this morning early this morning. Chance of snow after midnight
tonight. Waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to 7
ft occasionally to 9 ft today. Waves 7 to 10 ft occasionally to
13 ft building to 8 to 12 ft occasionally to 16 ft tonight.

$$


Boxell

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

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


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