Weather Alerts-

Make preparations per the instructions

Chicago - IL, US, National Weather Service

Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Burns Harbor IN

...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 6 AM CST FRIDAY... WHAT...Periods of dense fog with visibility less than 1 mile expected. WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Burns Harbor IN. WHEN...Until 6 AM CST Friday. IMPACTS...Low visibility will make navigation difficult. ADDITIONAL DETAILS...Fog will become dense after midnight tonight. There may be occasional breaks in fog during the Dense Fog Advisory. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass.