Headline:
Dense Fog Advisory issued September 1 at 12:51AM EDT until September 1 at 11:00AM EDT by NWS Marquette MI
Event:
Dense Fog Advisory
Urgency:
Expected
Effective:
August 31, 2026 - 9:51pm
Expires:
September 1, 2026 - 8:00am
Description:
* WHAT...Dense fog will reduce visibility to less than one
nautical mile.
* WHERE...Lake Superior west of a line from Saxon Harbor WI to
Grand Portage MN beyond 5NM, Upper Entrance of Portage Canal
to Eagle River MI, Eagle River to Manitou Island MI, 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 11 AM EDT /10 AM CDT/ this morning.
* 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 west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM; Upper Entrance of Portage Canal to Eagle River MI; Eagle River to Manitou Island MI; 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