Minor Dense Smoke Advisory | Effective 07/17/2026 23:12

Headline: 
Dense Smoke Advisory issued July 18 at 1:12AM CDT until July 18 at 5:00AM CDT by NWS Duluth MN
Event: 
Dense Smoke Advisory
Urgency: 
Expected
Effective: 
July 17, 2026 - 11:12pm
Expires: 
July 18, 2026 - 3:00am
Description: 
* WHAT...Dense smoke will reduce visibility to less than 1 NM. * WHERE...Portions of Lake Superior. * WHEN...Until 5 AM CDT early 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: 
Chequamegon Bay-Bayfield to Oak Point WI; Silver Bay Harbor to Two Harbors MN; Two Harbors to Duluth MN; Duluth MN to Port Wing WI; Port Wing to Sand Island WI; Sand Island to Bayfield WI; Oak Point to Saxon Harbor WI; Outer Apostle Islands Beyond 5 NM from Mainland
Forcast Office: 
NWS Duluth MN