Headline:
Dense Fog Advisory issued June 7 at 10:39AM EDT until June 7 at 3:00PM EDT by NWS Marquette MI
Event:
Dense Fog Advisory
Urgency:
Expected
Effective:
June 7, 2026 - 7:39am
Expires:
June 7, 2026 - 12:00pm
Description:
* WHAT...Dense fog will reduce visibility to less than one
nautical mile.
* WHERE...Lower Entrance of Portage Canal To Huron Islands MI
Including Keweenaw and Huron Bays, Lake Superior from Saxon
Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore
to the US/Canadian border including Isle Royale National Park
and Lake Superior from Upper Entrance to Portage Canal to
Manitou Island MI 5NM off shore to the US/Canadian Border.
* WHEN...Until 3 PM EDT this afternoon.
* 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:
Portage Lake to Huron Island MI to Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays; Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park; Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border
Forcast Office:
NWS Marquette MI
Sender:
w-nws.webmaster@noaa.gov