Headline:
Dense Smoke Advisory issued July 17 at 10:04PM EDT until July 18 at 6:00AM EDT by NWS Marquette MI
Event:
Dense Smoke Advisory
Urgency:
Expected
Effective:
July 17, 2026 - 7:04pm
Expires:
July 18, 2026 - 3:00am
Description:
* WHAT...Dense smoke will reduce visibility to less than one
nautical mile.
* WHERE...Portions of Central, Eastern and Western Lake Superior.
* WHEN...Until 6 AM EDT /5 AM CDT/ Saturday.
* 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; Saxon Harbor WI to Black River MI; Black River To Ontonagon MI; Ontonagon to Upper Entrance of Portage Canal MI; Upper Entrance of Portage Canal to Eagle River MI; Eagle River to Manitou Island MI; Manitou Island to Point Isabelle MI; Point Isabelle to Lower Entrance of Portage Canal MI; 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; 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; Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border
Forcast Office:
NWS Marquette MI
Sender: