Watches, Warnings & Advisories
2 products found for Marine Zone: LMZ740
Hazardous Weather Outlook
Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 343 AM CST Sun Nov 9 2025 LMZ740>745-100945- 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- 343 AM CST Sun Nov 9 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...Today and Tonight. Weather hazards expected... Gale force winds and very hazardous waves are expected. Limited Thunderstorm Risk tonight. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Monday morning... Gale force winds and very hazardous waves are expected. Limited Thunderstorm Risk. Tuesday through Thursday... Hazardous conditions for small craft are likely. $$ DK Visit us at www.weather.gov/chicago
Gale Warning
URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 340 AM CST Sun Nov 9 2025 LMZ740>742-091745- /O.CON.KLOT.GL.W.0027.000000T0000Z-251110T1200Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 340 AM CST Sun Nov 9 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 6 AM CST MONDAY... * WHAT...Winds to 35 kt and significant waves to 14 ft occasionally to 18 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From midnight tonight to 6 AM CST Monday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$