Gale Warning
URGENT - MARINE WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
852 PM CST Thu Dec 4 2025
LMZ261-362-364-366-563-565-567-868-051100-
/O.CON.KMKX.GL.W.0034.251205T0300Z-251205T1500Z/
Lake Michigan from Seul Choix Point to Rock Island Passage 5NM
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 5NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to
mid lake-
Lake Michigan from Point Betsie to Manistee MI 5NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM
offshore to mid lake-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid
Lake-
Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid
Lake-
852 PM CST Thu Dec 4 2025
...GALE WARNING REMAINS IN EFFECT UNTIL 9 AM CST FRIDAY...
* WHAT...Southwest winds 25 to 35 kt with gusts up to 40 kt and
waves 8 to 13 ft expected.
* WHERE...Northern Open Waters of Lake Michigan.
* WHEN...Until 9 AM CST Friday.
* IMPACTS...Strong winds will cause hazardous waves which could
capsize or damage vessels and reduce visibility.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.
&&
$$
Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
939 PM CST Thu Dec 4 2025
LMZ740-051145-
/O.CON.KLOT.SC.Y.0108.251205T0600Z-251206T0600Z/
Winthrop Harbor to Wilmette Harbor IL-
939 PM CST Thu Dec 4 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST
FRIDAY NIGHT...
* WHAT...Southwest winds to 25 kt expected.
* WHERE...Winthrop Harbor to Wilmette Harbor IL.
* WHEN...From midnight tonight to midnight CST Friday night.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
939 PM CST Thu Dec 4 2025
LMZ741>745-051145-
/O.CON.KLOT.SC.Y.0108.251205T1800Z-251206T0600Z/
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
939 PM CST Thu Dec 4 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM NOON FRIDAY TO
MIDNIGHT CST FRIDAY NIGHT...
* WHAT...Southwest winds to 25 kt expected.
* WHERE...Calumet Harbor IL to Michigan City IN, and Wilmette
Harbor to Calumet Harbor IL.
* WHEN...From noon Friday to midnight CST Friday night.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
852 PM CST Thu Dec 4 2025
LMZ643>646-051100-
/O.CON.KMKX.SC.Y.0106.251205T0400Z-251206T0600Z/
Sheboygan to Port Washington WI-
Port Washington to North Point Light WI-
North Point Light to Wind Point WI-
Wind Point WI to Winthrop Harbor IL-
852 PM CST Thu Dec 4 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST
FRIDAY NIGHT...
* WHAT...Southwest winds 15 to 25 kt with gusts up to 30 kt
expected.
* WHERE...Nearshore Waters from Sheboygan to Winthrop Harbor IL.
* WHEN...Until midnight CST Friday night.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
820 PM CST Thu Dec 4 2025
LMZ542-543-051030-
/O.CON.KGRB.SC.Y.0093.000000T0000Z-251205T1500Z/
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
820 PM CST Thu Dec 4 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST FRIDAY...
* WHAT...Southwest winds 15 to 25 kt with gusts up to 30 kt and
waves 3 to 6 ft.
* WHERE...Lake Michigan nearshore waters from Sturgeon Bay to
Sheboygan.
* WHEN...Until 9 AM CST Friday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
925 PM CST Thu Dec 4 2025
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-060330-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
925 PM CST Thu Dec 4 2025 /1025 PM EST Thu Dec 4 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
Weather hazards expected...
Limited Excessive Cold Risk.
Limited Freezing Fog Risk mainly east of I-55.
DISCUSSION...
Pockets of locally dense freezing fog may develop tonight,
primarily east of about I-55 which may lead to slippery
conditions.
Wind chills 10 below to 15 below zero are expected tonight into
early Friday morning.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Friday morning...
Limited Excessive Cold Risk.
Early Saturday morning...
Limited Snow or Ice accumulation Risk.
Sunday through Wednesday...
Limited Snow Risk.
DISCUSSION...
Clipper systems parading across the broad region may deliver
periodic opportunities for snow and travel impacts in our local
area.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
$$
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
925 PM CST Thu Dec 4 2025
LMZ740>745-060330-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
925 PM CST Thu Dec 4 2025
This Hazardous Weather Outlook is for portions of the Illinois
nearshore waters of Lake Michigan and the Indiana nearshore
waters of Lake Michigan.
.DAY ONE...Tonight.
Weather hazards expected...
Hazardous conditions for small craft parts of IL nearshore.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Friday...
Hazardous conditions for small craft are likely.
Sunday through Wednesday...
Hazardous conditions for small craft are likely.
$$
Visit us at www.weather.gov/chicago
Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
257 PM CST Thu Dec 4 2025
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-052100-
Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson-Iowa-Johnson-
Cedar-Clinton-Muscatine-Scott-Keokuk-Washington-Louisa-Jefferson-
Henry IA-Des Moines-Van Buren-Lee-Jo Daviess-Stephenson-Carroll-
Whiteside-Rock Island-Henry IL-Bureau-Putnam-Mercer-Henderson-
Warren-Hancock-McDonough-Scotland-Clark-
257 PM CST Thu Dec 4 2025
This Hazardous Weather Outlook is for portions of north central
Illinois...northwest Illinois...west central Illinois...east
central Iowa...northeast Iowa...southeast Iowa and northeast
Missouri.
.DAY ONE...THIS AFTERNOON AND TONIGHT
Another cold night is expected with wind chills in the single
digits and teens below zero.
.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY
Accumulating snow is likely Saturday night into early Sunday
morning which could lead to slippery travel conditions. There is a
moderate to high chance for an inch or more of snowfall across
much of the outlook area.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed through tonight.
$$
ZU
Hazardous Weather Outlook
National Weather Service Green Bay WI
223 PM CST Thu Dec 4 2025
LMZ521-522-541>543-052030-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
223 PM CST Thu Dec 4 2025
This Hazardous Weather Outlook is for portions of northwest Lake
Michigan and the waters of Green Bay.
.DAY ONE...Tonight
A Gale Warning is in effect from 9 pm tonight to 6 am Friday over
the coastal waters of northern Door County where gusts to around
35 knots are possible. Freezing spray will also be likely due to
the high waves and cold temperatures.
.DAYS TWO THROUGH SEVEN...Friday through Thursday
The probability for widespread hazardous weather is low.
$$
Uhlmann
Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
216 PM CST Thu Dec 4 2025
LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-052030-
Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to
mid-line of lake.-
Lake Michigan from Seul Choix Point to Rock Island Passage 5NM
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 5NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to
mid lake-
Lake Michigan from Point Betsie to Manistee MI 5NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM
offshore to mid lake-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid
Lake-
Lake Michigan from Sheboygan to Port Washington WI 5NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor to Michigan City in 5NM
offshore to Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid
Lake-
Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5NM offshore to Mid
lake-
Lake Michigan from St Joseph to South Haven MI 5NM offshore to
Mid Lake-
216 PM CST Thu Dec 4 2025
This Hazardous Weather Outlook is for the open waters of Lake Michigan.
.DAY ONE...Tonight
Moderate freezing spray is expected this evening through tonight.
Southwest gales will develop mid to late evening across the
northern half of the lake. A Gale Warning is in effect.
.DAYS TWO THROUGH SEVEN...Friday through Thursday
A Gale Warning will remain in effect for the northern half of Lake
Michigan through mid morning Friday.
Moderate freezing spray will continue through mid Friday morning.
$$
Sheppard
www.weather.gov/mkx
Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
216 PM CST Thu Dec 4 2025
LMZ643>646-052030-
Sheboygan to Port Washington WI-
Port Washington to North Point Light WI-
North Point Light to Wind Point WI-
Wind Point WI to Winthrop Harbor IL-
216 PM CST Thu Dec 4 2025
This Hazardous Weather Outlook is for the nearshore waters from
Sheboygan Wisconsin to Winthrop Harbor Illinois.
.DAY ONE...Tonight
A Small Craft Advisory is in effect tonight for gusty southwest
winds.
.DAYS TWO THROUGH SEVEN...Friday through Thursday
The Small Craft Advisory remains in effect until late Friday
night.
Additional Small Craft Advisories may be needed Sunday and
onwards.
$$
Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
216 PM CST Thu Dec 4 2025
WIZ046-047-051-052-056>060-062>072-052030-
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
216 PM CST Thu Dec 4 2025
This Hazardous Weather Outlook is for portions of east central
Wisconsin, south central Wisconsin and southeast Wisconsin.
.DAY ONE...Tonight
Wind chills around -5 to -15 are expected this evening into
Tonight.
.DAYS TWO THROUGH SEVEN...Friday through Thursday
There is a chance for a dusting of snow and patchy freezing
drizzle Friday evening.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed.
$$
Hydrologic Outlook
Hydrologic Outlook
ILC007-031-037-043-053-063-075-089-091-093-097-099-103-105-111-141-
197-201-INC007-073-089-111-127-051800-
Hydrologic Outlook
National Weather Service Chicago IL
209 PM CST Thu Dec 4 2025
...Risks for River Ice Formation and Isolated Ice Jams will continue
the next Few Days...
Very cold temperatures tonight will be favorable for additional ice
on rivers and tributaries. Reports from river ice spotters and river
gauges indicate that isolated areas of heavy river ice coverage have
already developed. While not likely, ice jams will be possible in
isolated areas along the Rock, Fox, Des Plaines, and Kankakee
rivers. Ice jams may cause rises on area rivers with little warning.
Despite warmer temperatures expected by this weekend, widespread
melting of river ice is not expected. As a result, most river ice
that develops this week will likely remain in place through early
next week.
This outlook means that elevated water levels and potential impacts
are possible, but not yet certain. Persons with interests along area
rivers should closely monitor the latest forecasts.
This product may be updated by tomorrow afternoon.
$$
WSL/Borchardt
