Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
232 PM CST Thu Dec 4 2025
LMZ740-050445-
/O.NEW.KLOT.SC.Y.0108.251205T0600Z-251206T0600Z/
Winthrop Harbor to Wilmette Harbor IL-
232 PM CST Thu Dec 4 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
232 PM CST Thu Dec 4 2025
LMZ741>743-050445-
/O.NEW.KLOT.SC.Y.0108.251205T1800Z-251206T0600Z/
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
232 PM CST Thu Dec 4 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON FRIDAY TO MIDNIGHT
CST FRIDAY NIGHT...
* WHAT...Southwest winds to 25 kt expected.
* WHERE...Wilmette Harbor to Calumet Harbor IL, and Calumet
Harbor IL to Gary IN.
* WHEN...From noon Friday to midnight CST Friday night.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
232 PM CST Thu Dec 4 2025
LMZ744-745-050445-
/O.EXP.KLOT.SC.Y.0106.000000T0000Z-251204T2100Z/
/O.NEW.KLOT.SC.Y.0108.251205T1800Z-251206T0600Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
232 PM CST Thu Dec 4 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON FRIDAY TO MIDNIGHT
CST FRIDAY NIGHT...
* WHAT...Southwest winds to 25 kt expected.
* WHERE...Gary to Michigan City IN.
* 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
156 PM CST Thu Dec 4 2025
LMZ643>646-050400-
/O.EXT.KMKX.SC.Y.0106.251205T0400Z-251206T0600Z/
Sheboygan to Port Washington WI-
Port Washington to North Point Light WI-
North Point Light to Wind Point WI-
Wind Point WI to Winthrop Harbor IL-
156 PM CST Thu Dec 4 2025
...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 10 PM THIS EVENING TO
MIDNIGHT CST FRIDAY NIGHT...
* WHAT...Southwest winds 15 to 25 kt with gusts up to 30 kt
expected.
* WHERE...Nearshore Waters from Sheboygan to Winthrop Harbor IL.
* WHEN...From 10 PM this evening to midnight CST Friday night.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
Sheppard
URGENT - MARINE WEATHER MESSAGE
National Weather Service Grand Rapids MI
246 PM EST Thu Dec 4 2025
LMZ844>848-050500-
/O.CAN.KGRR.SC.Y.0105.000000T0000Z-251205T0000Z/
/O.NEW.KGRR.SC.Y.0106.251205T0300Z-251207T0000Z/
St Joseph to South Haven MI-South Haven to Holland MI-
Holland to Grand Haven MI-Grand Haven to Whitehall MI-
Whitehall to Pentwater MI-
246 PM EST Thu Dec 4 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 7 PM
EST SATURDAY...
...SMALL CRAFT ADVISORY IS CANCELLED...
* WHAT...Southwest winds 20 to 30 knots with occasional gusts up
to 35 knots and waves 7 to 10 feet expected.
* WHERE...St Joseph to Pentwater.
* WHEN...From 10 PM this evening to 7 PM EST Saturday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Northern Indiana
236 PM EST Thu Dec 4 2025
LMZ043-050545-
/O.CAN.KIWX.SC.Y.0073.000000T0000Z-251205T0000Z/
/O.NEW.KIWX.SC.Y.0074.251205T2000Z-251206T1600Z/
New Buffalo MI to St Joseph MI-
236 PM EST Thu Dec 4 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM FRIDAY TO 11 AM EST
SATURDAY...
* WHAT...Southwest winds 15 to 20 knots with gusts up to 25 knots
and waves 3 to 5 feet expected.
* WHERE...New Buffalo MI to St Joseph MI.
* WHEN...From 3 PM Friday to 11 AM EST Saturday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Northern Indiana
236 PM EST Thu Dec 4 2025
LMZ046-050545-
/O.CAN.KIWX.SC.Y.0073.000000T0000Z-251205T0000Z/
/O.NEW.KIWX.SC.Y.0074.251205T2000Z-251206T0900Z/
Michigan City IN to New Buffalo MI-
236 PM EST Thu Dec 4 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM FRIDAY TO 4 AM EST
SATURDAY...
* WHAT...Southwest winds 15 to 20 knots with gusts up to 25
knots expected.
* WHERE...Michigan City IN to New Buffalo MI.
* WHEN...From 3 PM Friday to 4 AM EST Saturday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Northern Indiana
407 PM EST Thu Dec 4 2025
INZ005>009-012>015-017-018-020-022>027-032>034-103-104-116-203-204-
216-MIZ078>081-177-277-OHZ001-002-004-005-015-016-024-025-052115-
Elkhart-Lagrange-Steuben-Noble-De Kalb-Starke-Pulaski-Marshall-
Fulton IN-Whitley-Allen IN-White-Cass IN-Miami-Wabash-Huntington-
Wells-Adams-Grant-Blackford-Jay-Northern La Porte-
Eastern St. Joseph IN-Northern Kosciusko-Southern La Porte-
Western St. Joseph IN-Southern Kosciusko-Cass MI-St. Joseph MI-
Branch-Hillsdale-Northern Berrien-Southern Berrien-Williams-
Fulton OH-Defiance-Henry-Paulding-Putnam-Van Wert-Allen OH-
407 PM EST Thu Dec 4 2025 /307 PM CST Thu Dec 4 2025/
This Hazardous Weather Outlook is for northern Indiana, southwest
Michigan and northwest Ohio.
.DAY ONE...This afternoon and tonight.
Cold temperatures near zero and wind chill readings below zero are
expected tonight into early Friday.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Cold temperatures near zero and wind chill readings below zero are
expected Friday morning and again Monday and Tuesday morning.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
Hazardous Weather Outlook
National Weather Service Northern Indiana
407 PM EST Thu Dec 4 2025
LMZ043-052115-
New Buffalo MI to St Joseph MI-
407 PM EST Thu Dec 4 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM FRIDAY TO 11 AM EST
SATURDAY...
This Hazardous Weather Outlook is for the nearshore waters of
southeastern Lake Michigan.
.DAY ONE...This afternoon and tonight.
No hazardous weather is expected.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.
Small Craft Advisory.
Small Craft Advisory.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
Hazardous Weather Outlook
National Weather Service Northern Indiana
407 PM EST Thu Dec 4 2025
LMZ046-052115-
Michigan City IN to New Buffalo MI-
407 PM EST Thu Dec 4 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM FRIDAY TO 4 AM EST
SATURDAY...
This Hazardous Weather Outlook is for the nearshore waters of
southeastern Lake Michigan.
.DAY ONE...This afternoon and tonight.
No hazardous weather expected.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.
Small Craft Advisory.
Small Craft Advisory.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
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.
$$
ZU
Hazardous Weather Outlook
National Weather Service Indianapolis IN
353 PM EST Thu Dec 4 2025
INZ021-028>031-035>049-051>057-060>065-067>072-052100-
Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery-Boone-
Tipton-Hamilton-Madison-Delaware-Randolph-Vermillion-Parke-Putnam-
Hendricks-Marion-Hancock-Henry-Vigo-Clay-Owen-Morgan-Johnson-Shelby-
Rush-Sullivan-Greene-Monroe-Brown-Bartholomew-Decatur-Knox-Daviess-
Martin-Lawrence-Jackson-Jennings-
353 PM EST Thu Dec 4 2025
This hazardous weather outlook is for central Indiana.
.DAY ONE...Through Tonight.
Patchy freezing fog is possible tonight across portions of central
Indiana, especially north and west.
Near or below zero wind chills are possible again for parts of the
area tonight into Friday morning.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Additional light snow is possible Sunday and Tuesday.
.SPOTTER INFORMATION STATEMENT...
Spotters are encouraged to report snowfall amounts tonight.
&&
More information, along with other weather, hydrological and climate
information can be found at http://weather.gov/ind
$$
Hazardous Weather Outlook
National Weather Service Grand Rapids MI
327 PM EST Thu Dec 4 2025
LMZ844>849-050845-
St Joseph to South Haven MI-South Haven to Holland MI-
Holland to Grand Haven MI-Grand Haven to Whitehall MI-
Whitehall to Pentwater MI-Pentwater to Manistee MI-
327 PM EST Thu Dec 4 2025
This hazardous weather outlook is for the nearshore waters from
St Joseph to Manistee.
.DAY ONE...Tonight
Winds and waves will create hazardous conditions.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday
Winds and waves will create hazardous conditions at times through
next Wednesday.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed.
$$
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.
$$
Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
216 PM CST Thu Dec 4 2025
WIZ046-047-051-052-056>060-062>072-052030-
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
216 PM CST Thu Dec 4 2025
This Hazardous Weather Outlook is for portions of east central
Wisconsin, south central Wisconsin and southeast Wisconsin.
.DAY ONE...Tonight
Wind chills around -5 to -15 are expected this evening into
Tonight.
.DAYS TWO THROUGH SEVEN...Friday through Thursday
There is a chance for a dusting of snow and patchy freezing
drizzle Friday evening.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed.
$$
Hazardous Weather Outlook
National Weather Service Lincoln IL
213 PM CST Thu Dec 4 2025
ILZ027>031-036>038-040>057-061-052015-
Knox-Stark-Peoria-Marshall-Woodford-Fulton-Tazewell-McLean-Schuyler-
Mason-Logan-De Witt-Piatt-Champaign-Vermilion-Cass-Menard-Scott-
Morgan-Sangamon-Christian-Macon-Moultrie-Douglas-Coles-Edgar-Shelby-
213 PM CST Thu Dec 4 2025
This Hazardous Weather Outlook is for central Illinois, east
central Illinois and west central Illinois.
.DAY ONE...Tonight.
Temperatures in the single digits or slightly below zero can be
expected tonight, with wind chills from zero to minus 15.
Areas of freezing fog, with visibility below a half mile, are
possible late tonight into Friday morning. This could result in
patchy slick spots, especially on elevated surfaces.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
There is a chance (30 to 50 percent) for snow on Saturday night and
Sunday. There is another slight chance (20 percent) for snow on
Tuesday.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not anticipated tonight.
$$
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
203 PM CST Thu Dec 4 2025
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-052015-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
203 PM CST Thu Dec 4 2025 /303 PM EST Thu Dec 4 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...This Afternoon and Tonight.
Weather hazards expected...
Limited Excessive Cold Risk.
DISCUSSION...
Wind chills 10 below to 15 below zero are expected tonight into
early Friday morning.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Friday morning...
Limited Excessive Cold Risk.
Early Saturday morning...
Limited Snow or Ice accumulation Risk.
Sunday through Wednesday...
Limited Snow Risk.
DISCUSSION...
Clipper systems parading across the broad region may deliver
periodic opportunities for snow and travel impacts in our local
area.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
$$
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
203 PM CST Thu Dec 4 2025
LMZ740>745-052015-
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-
203 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...This Afternoon and Tonight.
Weather hazards expected...
Hazardous conditions for small craft.
.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.
$$
Borchardt
Visit us at www.weather.gov/chicago
Hydrologic Outlook
Hydrologic Outlook
ILC007-031-037-043-053-063-075-089-091-093-097-099-103-105-111-141-
197-201-INC007-073-089-111-127-051800-
Hydrologic Outlook
National Weather Service Chicago IL
209 PM CST Thu Dec 4 2025
...Risks for River Ice Formation and Isolated Ice Jams will continue
the next Few Days...
Very cold temperatures tonight will be favorable for additional ice
on rivers and tributaries. Reports from river ice spotters and river
gauges indicate that isolated areas of heavy river ice coverage have
already developed. While not likely, ice jams will be possible in
isolated areas along the Rock, Fox, Des Plaines, and Kankakee
rivers. Ice jams may cause rises on area rivers with little warning.
Despite warmer temperatures expected by this weekend, widespread
melting of river ice is not expected. As a result, most river ice
that develops this week will likely remain in place through early
next week.
This outlook means that elevated water levels and potential impacts
are possible, but not yet certain. Persons with interests along area
rivers should closely monitor the latest forecasts.
This product may be updated by tomorrow afternoon.
$$
WSL/Borchardt
