Headline:
Dense Fog Advisory issued October 22 at 10:29AM EDT until October 22 at 2:00PM EDT by NWS Marquette MI
Event:
Dense Fog Advisory
Urgency:
Expected
Effective:
October 22, 2026 - 7:29am
Expires:
October 22, 2026 - 11:00am
Description:
* WHAT...Dense fog will reduce visibility to less than one
nautical mile.
* WHERE...Huron Islands to Marquette MI, Marquette to Munising
MI, Munising to Grand Marais MI, Lake Superior West of Line
from Manitou Island to Marquette MI Beyond 5NM from shore and
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.
* WHEN...Until 2 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:
Huron Islands to Marquette MI; Marquette to Munising MI; Munising to Grand Marais MI; Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore; 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
Forcast Office:
NWS Marquette MI
Sender:
w-nws.webmaster@noaa.gov