Headline:
Dense Fog Advisory issued July 25 at 9:50PM EDT until July 26 at 11:00AM EDT by NWS Marquette MI
Event:
Dense Fog Advisory
Urgency:
Expected
Effective:
July 25, 2026 - 6:50pm
Expires:
July 26, 2026 - 8:00am
Description:
* WHAT...Dense fog will reduce visibility to less than one
nautical mile.
* WHERE...Lake Superior from Upper Entrance to Portage Canal to
Manitou Island MI 5NM off shore to the US/Canadian Border,
Lake Superior East of a line from Manitou Island to Marquette
MI and West of a line from Grand Marais MI to the US/Canadian
Border Beyond 5NM from shore and Lake Superior from Grand
Marais MI to Whitefish Point MI 5NM off shore to the
US/Canadian border.
* WHEN...Until 11 AM EDT Sunday.
* IMPACTS...Low visibility will make navigation difficult.
Instruction:
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.
Area Description:
Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border; Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore; Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border
Forcast Office:
NWS Marquette MI
Sender:
w-nws.webmaster@noaa.gov