641 WHUS73 KLOT 192000 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 300 PM CDT Tue May 19 2026 LMZ740>742-200400- /O.CAN.KLOT.SC.Y.0059.000000T0000Z-260519T2100Z/ /O.NEW.KLOT.SC.Y.0060.260520T1500Z-260521T0900Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 300 PM CDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM WEDNESDAY TO 4 AM CDT THURSDAY... * WHAT...North to northeast winds to 25 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 10 AM Wednesday to 4 AM CDT 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. && $$ LMZ743>745-200400- /O.CAN.KLOT.SC.Y.0059.000000T0000Z-260519T2100Z/ /O.NEW.KLOT.SC.Y.0060.260520T1200Z-260521T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 300 PM CDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM WEDNESDAY TO 4 AM CDT THURSDAY... * WHAT...North to northeast winds to 25 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 7 AM Wednesday to 4 AM CDT Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$  055 WHUS71 KBUF 192006 MWWBUF URGENT - MARINE WEATHER MESSAGE National Weather Service Buffalo NY 406 PM EDT Tue May 19 2026 LOZ042-192115- /O.CAN.KBUF.SC.Y.0045.000000T0000Z-260520T0600Z/ Lake Ontario nearshore waters from the Niagara River to Hamlin Beach- 406 PM EDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IS CANCELLED... $$ LOZ043>045-200815- /O.NEW.KBUF.SC.Y.0046.260520T1500Z-260521T0600Z/ Lake Ontario nearshore waters from Hamlin Beach to Sodus Bay- Lake Ontario nearshore waters from Sodus Bay to Mexico Bay- Lake Ontario nearshore waters from Mexico Bay to the Saint Lawrence River- 406 PM EDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM WEDNESDAY TO 2 AM EDT THURSDAY... * WHAT...West winds 15 to 20 knots and waves 3 to 6 feet expected. * WHERE...The nearshore waters of Lake Ontario from Hamlin Beach to the Saint Lawrence River. * WHEN...From 11 AM Wednesday to 2 AM EDT Thursday. * IMPACTS...Winds and/or waves will cause hazardous conditions that could capsize or damage small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$  619 WHUS73 KMKX 192013 MWWMKX URGENT - MARINE WEATHER MESSAGE National Weather Service Milwaukee/Sullivan WI 313 PM CDT Tue May 19 2026 LMZ261-362-364-366-563-565-567-868-192115- /O.EXP.KMKX.MF.Y.0006.000000T0000Z-260519T2000Z/ 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- 313 PM CDT Tue May 19 2026 ...DENSE FOG ADVISORY HAS EXPIRED... Winds will become gusty out of the west behind a cold front late this afternoon. Therefore, the threat for dense fog has diminished. $$ LMZ643-200000- /O.EXT.KMKX.SC.Y.0055.000000T0000Z-260520T0000Z/ Sheboygan to Port Washington WI- 313 PM CDT Tue May 19 2026 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 7 PM CDT THIS EVENING... * WHAT...Westerly winds 15 to 25 kt with gusts up to 30 kt through early evening. * WHERE...Nearshore Waters from Sheboygan to Port Washington. * WHEN...Until 7 PM CDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ644>646-200000- /O.EXT.KMKX.SC.Y.0054.000000T0000Z-260520T0000Z/ Port Washington to North Point Light WI- North Point Light to Wind Point WI- Wind Point WI to Winthrop Harbor IL- 313 PM CDT Tue May 19 2026 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 7 PM CDT THIS EVENING... * WHAT...Westerly winds 15 to 25 kt with gusts up to 30 kt through early evening. * WHERE...Nearshore Waters from Port Washington to Winthrop Harbor IL. * WHEN...Until 7 PM CDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ MRC  085 WHCA72 TJSJ 192024 MWWSJU URGENT - MARINE WEATHER MESSAGE National Weather Service San Juan PR 424 PM AST Tue May 19 2026 AMZ711-201000- /O.CON.TJSJ.SC.Y.0018.000000T0000Z-260520T2200Z/ Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- 424 PM AST Tue May 19 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM AST WEDNESDAY... * WHAT...East winds 15 to 20 kt with gusts up to 30 kt and seas 6 to 7 ft. * WHERE...Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N. * WHEN...Until 6 PM AST Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$