Minor Dense Fog Advisory | Effective 09/01/2026 08:01
* WHAT...Dense fog will reduce visibility to less than one
nautical mile at times.
* WHERE...Grand Marais to Whitefish Point MI and Lake Superior
from Grand Marais MI to Whitefish Point MI 5NM off shore to
the US/Canadian border.
* WHEN...Until 2 PM EDT this afternoon.
* IMPACTS...Low visibility will make navigation difficult.
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.