Minor Dense Smoke Advisory | Effective 07/17/2026 06:57

Headline: 
Dense Smoke Advisory issued July 17 at 9:57AM EDT until July 17 at 10:00PM EDT by NWS Detroit/Pontiac MI
Event: 
Dense Smoke Advisory
Urgency: 
Expected
Effective: 
July 17, 2026 - 6:57am
Expires: 
July 17, 2026 - 7:00pm
Description: 
* WHAT...Dense smoke will reduce visibility to 1 NM or less. * WHERE...Portions of Lake Huron and Lake St Clair. * WHEN...Dense smoke persist today through this evening. * 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 St. Clair Open Lake (U.S. Portion); Port Austin to Harbor Beach MI; Harbor Beach to Port Sanilac MI; Port Sanilac to Port Huron MI; Lake Huron from Port Austin to Harbor Beach 5NM Off Shore to the US/Canadian border; Lake Huron from Harbor Beach to Port Sanilac 5NM Off Shore to US/Canadian border; Lake Huron from Port Sanilac to Port Huron 5NM Off Shore to US/Canadian border
Forcast Office: 
NWS Detroit/Pontiac MI