Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
258 AM CST Tue Nov 11 2025
LMZ740>742-111700-
/O.EXP.KLOT.SC.Y.0099.000000T0000Z-251111T0900Z/
/O.CON.KLOT.SC.Y.0100.251111T1500Z-251113T0300Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
258 AM CST Tue Nov 11 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING
TO 9 PM CST WEDNESDAY...
* WHAT...West winds to 30 kt with a few gale force gusts to 35 kt
and significant waves to 5 ft expected.
* WHERE...Winthrop Harbor to Calumet Harbor IL.
* WHEN...From 9 AM this morning to 9 PM CST Wednesday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
258 AM CST Tue Nov 11 2025
LMZ743>745-111700-
/O.CON.KLOT.SC.Y.0099.000000T0000Z-251113T0900Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
258 AM CST Tue Nov 11 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST
THURSDAY...
* WHAT...West winds to 30 kt with a few gale force gusts to 35 kt
and significant waves to 7 ft occasionally to 9 ft.
* WHERE...Calumet Harbor IL to Michigan City IN.
* WHEN...Until 3 AM CST Thursday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
240 AM CST Tue Nov 11 2025
LMZ643>646-111645-
/O.CON.KMKX.SC.Y.0098.251111T1500Z-251113T0300Z/
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-
240 AM CST Tue Nov 11 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING
TO 9 PM CST WEDNESDAY...
* WHAT...Southwest winds 20 to 25 kt today with gusts up to 30 kt
expected. Then west winds 15 to 25 knots with gusts up to 30 kt
for tonight and Wednesday.
* WHERE...Nearshore Waters from Sheboygan to Winthrop Harbor IL.
* WHEN...From 9 AM today to 9 PM CST Wednesday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Northern Indiana
319 AM EST Tue Nov 11 2025
LMZ043-046-111630-
/O.EXT.KIWX.SC.Y.0068.000000T0000Z-251113T1500Z/
New Buffalo MI to St Joseph MI-Michigan City IN to New Buffalo MI-
319 AM EST Tue Nov 11 2025
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 10 AM EST THURSDAY...
* WHAT...Southwest winds 15 to 25 knots with gusts up to 30 knots
becoming west. Waves 5 to 8 feet.
* WHERE...Michigan City IN to St Joseph MI.
* WHEN...Until 10 AM EST Thursday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Grand Rapids MI
318 AM EST Tue Nov 11 2025
LMZ844>849-111630-
/O.CON.KGRR.SC.Y.0096.000000T0000Z-251111T1800Z/
/O.CON.KGRR.GL.W.0023.251111T1800Z-251112T0300Z/
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-
318 AM EST Tue Nov 11 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...
...GALE WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO
10 PM EST THIS EVENING...
* WHAT...For the Small Craft Advisory, west winds 15 to 25 knots
with gusts up to 30 knots and waves 4 to 7 feet. For the Gale
Warning, southwest winds 20 to 30 knots with gusts up to 40
knots and waves 6 to 11 feet expected.
* WHERE...St Joseph to Manistee.
* WHEN...For the Small Craft Advisory, until 1 PM EST this
afternoon. For the Gale Warning, from 1 PM this afternoon to
10 PM EST this evening.
* 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 hazardous conditions.
&&
$$
