Watches, Warnings & Advisories

2 products found for Marine Zone: LMZ741

Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1145 AM CST Fri Mar 6 2026

LMZ740>745-071745-
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-
1145 AM CST Fri Mar 6 2026

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...This Afternoon and Tonight.

Weather hazards expected...

  Elevated Thunderstorm Risk...with an associated:
     Thunderstorm Waterspout Risk
     Level 1 of 5 Thunderstorm Wind Gust Risk...up to 40 knots.
     Level 1 of 5 Hail Risk...up to one inch.
  Elevated Fog Risk.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Saturday...
  Hazardous conditions for small craft are likely.
  Limited Thunderstorm Risk in the morning.
Monday...
  Hazardous conditions for small craft are likely.
Tuesday...
  Hazardous conditions for small craft are likely.
  Limited Thunderstorm Risk
Wednesday and Thursday...
  Hazardous conditions for small craft are likely.

$$

Kluber

Visit us at www.weather.gov/chicago

Dense Fog Advisory

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
950 AM CST Fri Mar 6 2026

LMZ740>742-062100-
/O.CON.KLOT.MF.Y.0002.000000T0000Z-260306T2100Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
950 AM CST Fri Mar 6 2026

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...

* WHAT...Dense fog will reduce visibility to 1/4 NM or less.

* WHERE...Winthrop Harbor to Calumet Harbor IL.

* WHEN...Until 3 PM CST this afternoon.

* IMPACTS...Low visibility will make navigation difficult.

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.

&&

$$