Headline:
Dense Smoke Advisory issued July 19 at 10:12PM EDT until July 20 at 8:00AM EDT by NWS Marquette MI
Event:
Dense Smoke Advisory
Urgency:
Expected
Effective:
July 19, 2026 - 7:12pm
Expires:
July 20, 2026 - 5:00am
Description:
* WHAT...Dense smoke will reduce visibility to less than one
nautical mile.
* WHERE...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 and Lake Superior from Grand
Marais MI to Whitefish Point MI 5NM off shore to the
US/Canadian border.
* WHEN...Until 8 AM EDT Monday.
* 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 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: