Minor Dense Fog Advisory | Effective 07/27/2026 13:43

Headline: 
Dense Fog Advisory issued July 27 at 3:43PM CDT until July 28 at 11:00AM CDT by NWS Duluth MN
Event: 
Dense Fog Advisory
Urgency: 
Expected
Effective: 
July 27, 2026 - 1:43pm
Expires: 
July 28, 2026 - 1:45am
Description: 
* WHAT...For the Small Craft Advisory, waves 2 to 4 ft. For the Dense Fog Advisory, dense fog will reduce visibility to 1/4 to 1/2 NM. * WHERE...Portions of Lake Superior. * WHEN...For the Small Craft Advisory, until 7 PM CDT this evening. For the Dense Fog Advisory, until 11 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult.
Instruction: 
Anyone operating a smaller vessel should avoid navigating in hazardous conditions. 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