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⛅ Special Marine Warning issued April 17 at 9:59PM CDT until April 17 at 11:30PM CDT by NWS Chicago IL

weatherbearishSource: NOAA Weather
85%Confidence
0Views
NOAA WeatherSource
2026-04-18Date

Summary

Severe marine weather near Chicago disrupts Great Lakes shipping and port operations, potentially delaying cargo and increasing logistics costs. This poses a localized risk to regional maritime commerce and supply chains.

Actionable: Monitor for potential delays in shipping and logistics for goods moving through Chicago-area ports.

AI Confidence: 85%

Data Points

severitySevere
eventSpecial Marine Warning
areaWinthrop Harbor to Wilmette Harbor IL; Wilmette Harbor to Northerly Island IL; Burns Harbor to Michigan City IN; 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
urgencyImmediate
certaintyLikely

Source

http://www.weather.gov

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