The U.S. National Weather Service issued Dense Fog Advisories and a Special Weather Statement between September 27 and 29, 2026, affecting South Dakota, Minnesota, Michigan, and Wisconsin. Visibility reductions to one-quarter mile or less were reported or forecast in Lyon County SD, Alger County MI, and various Wisconsin coastal areas including the Apostle Islands.
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Patchy fog will linger. However, dense fog, with visibilities to a quarter mile or less, is no longer expected.
* WHAT...Visibility one quarter mile or less at times in dense fog. * WHERE...Lyon County. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
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Dense Fog Advisory issued September 28 at 1:35AM CDT until September 28 at 10:00AM CDT by NWS Sioux Falls SD * WHAT...Visibility one quarter mile or less at times in dense fog. * WHERE...Lyon County. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Low visibilit... #Fog #wx Read the full active National Weather Service alerts for Minnesota.
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this outlet adds: special, statement, 57am, aberdeen, patchy, continue, impact, portions
this outlet adds: 20am, duluth, crow, wing, pine, south, aitkin, counties
this outlet adds: 16am, crosse, dodge, olmsted, wabasha, counties, wisconsin, clark
this outlet adds: 37am, aberdeen, stone, traverse, counties, south, dakota, grant
Flood Advisory issued September 28 at 3:16AM CDT until September 28 at 6:00AM CDT by NWS Norman OK * WHAT...Flooding caused by excessive rainfall is expected. * WHERE...West Central Carter County in southern Oklahoma... * WHEN...Until 600 AM CDT. * IMPACTS...Minor... #Flood #wx #OKwx Read the full active National Weather Service alerts for Oklahoma.
* WHAT...Visibility of one quarter mile or less in dense fog. * WHERE...In Illinois, Ford, Iroquois, Eastern Will, Kankakee, and Southern Will Counties. In Indiana, Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...Until 10 AM CDT /11 AM EDT/ this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
Dense Fog Advisory issued September 28 at 3:44AM CDT until September 28 at 10:00AM CDT by NWS Chicago IL * WHAT...Visibility of one quarter mile or less in dense fog. * WHERE...In Illinois, Ford, Iroquois, Eastern Will, Kankakee, and Southern Will Counties. In India... #Fog #wx #ILwx Read the full active National Weather Service alerts for Illinois.
* WHAT...Visibility of one quarter mile or less in dense fog. * WHERE...Pulaski, Southern La Porte, Starke, and White Counties. * WHEN...Until 10 AM EDT /9 AM CDT/ this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
Special Weather Statement issued September 28 at 4:49AM EDT by NWS Northern Indiana Fog and locally dense fog is possible this morning. Observations have been fluctuating between above and below 2 miles, indicating a potential for shallow or transient fog as opposed ... #Fog #wx Read the full active National Weather Service alerts for Michigan.
Coastal Flood Advisory issued September 28 at 4:48AM EDT until September 28 at 2:00PM EDT by NWS Wakefield VA * WHAT...Up to one foot of inundation above ground level in low-lying areas near shorelines and tidal waterways. * WHERE...Accomack and Northampton Counties... #Flood #wx Read the full active National Weather Service alerts for Virginia.
* WHAT...Visibility one-quarter mile or less in dense fog. * WHERE...Champaign, Douglas, Edgar, and Vermilion Counties. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Minnesota, Crow Wing, Pine, and South Aitkin Counties. In Wisconsin, Price, Ashland, Bayfield, Burnett, Douglas, Iron, Sawyer, and Washburn Counties. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Visibility as low as one quarter of a mile in dense fog. * WHERE...Carroll, Fountain, Tippecanoe, Vermillion, and Warren Counties. * WHEN...Until 10 AM EDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Portions of southwest and west central Kansas. * WHEN...Until 10 AM CDT /9 AM MDT/ this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Langlade, Lincoln, Oneida, Vilas, Florence, and Forest Counties. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Minnesota, Pine County. In Wisconsin, Price, Ashland, Bayfield, Burnett, Douglas, Iron, Sawyer, and Washburn Counties. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Oklahoma, Beaver and Texas Counties. In Texas, Hansford, Lipscomb, and Ochiltree Counties. * WHEN...Until 11 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Minnesota, Dodge, Olmsted, and Wabasha Counties. In Wisconsin, Clark, Taylor, Buffalo, Jackson, and Trempealeau Counties. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Visibility less than one half mile in dense fog. * WHERE...Portions of central, east central, and south central Nebraska. * WHEN...Until 11 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Piatt, Coles, and Moultrie Counties. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Minnesota, Big Stone and Traverse Counties. In South Dakota, Grant and Roberts Counties. * WHEN...Until 11 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Portions of southwest and west central Kansas. * WHEN...Until 10 AM CDT /9 AM MDT/ this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
this outlet adds: ford, hodgeman, ness, trego, counties
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Hutchinson, Moore, Roberts, and Sherman Counties. * WHEN...Until 11 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Visibility of one quarter mile or less in dense fog. * WHERE...Livingston and Grundy Counties. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Visibility of one quarter mile or less in dense fog. * WHERE...Portions of northwest and west central Kansas and southwest Nebraska. * WHEN...From 8 AM CDT /7 AM MDT/ to 10 AM CDT /9 AM MDT/ Tuesday. * IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Oklahoma, Beaver and Texas Counties. In Texas, Hansford, Hutchinson, Lipscomb, Moore, Ochiltree, Roberts, and Sherman Counties. * WHEN...Until 11 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
this outlet adds: carson, dallam, deaf, smith, gray, hartley, oldham, palo
Dense Fog Advisory issued September 28 at 7:20AM CDT until September 28 at 11:00AM CDT by NWS Amarillo TX * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Oklahoma, Beaver and Texas Counties. In Texas, Hansford, Hutchinson, Lipscomb, Moore, Oc... #Fog #wx #TXwx Read the full active National Weather Service alerts for Texas.
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* WHAT...Visibility one quarter to one half mile in dense fog. * WHERE...Portions of the Panhandle of Oklahoma and the Panhandle of Texas. * WHEN...Until 11 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
this outlet adds: miles, hemphill, county
* WHAT...visibility one quarter mile or less in dense fog. * WHERE...In Kansas, Cheyenne KS County. In Nebraska, Dundy and Hitchcock Counties. * WHEN...From 8 AM CDT /7 AM MDT/ to 10 AM CDT /9 AM MDT/ Tuesday. * IMPACTS...Low visibility could make driving conditions hazardous.
this outlet adds: first, second, portions, northwest, west, central, southwest, morning
* WHAT...For the first Dense Fog Advisory, visibility one quarter mile or less in dense fog. For the second Dense Fog Advisory, visibility one quarter mile or less in dense fog. * WHERE...Portions of northwest and west central Kansas and southwest Nebraska. * WHEN...For the first Dense Fog Advisory, until 10 AM CDT /9 AM MDT/ this morning. For the second Dense Fog Advisory, from 8 AM CDT /7 AM MDT
Dense fog has ended. Patchy low clouds and fog will end by noon.
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Taylor County. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Dense fog will reduce visibility to 1/4 to 2 NM. * WHERE...Port Wing to Sand Island WI, Sand Island to Bayfield WI, Oak Point to Saxon Harbor WI and Outer Apostle Islands Beyond 5 NM from Mainland. * WHEN...Until noon CDT today. * IMPACTS...Low visibility will make navigation difficult.
The fog continues to dissipate this morning.
* WHAT...Visibility less than one mile in dense fog. * WHERE...Portions of southwest and west central Kansas. * WHEN...Until 11 AM CDT /10 AM MDT/ this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
Automated observations and webcams were showing an improvement in visibility across the region as fog continued to dissipate.
The threat has ended.
Dense fog has lifted across the area. Although visibility is still impacted, it is generally 1-2 miles or better at most locations. The dense fog advisory is allowed to expire.
* WHAT...Dense fog will reduce visibility to less than one nautical mile. * WHERE...Saxon Harbor WI to Black River MI and Black River to Ontonagon MI. * WHEN...Until 2 AM EDT /1 AM CDT/ Tuesday. * IMPACTS...Low visibility will make navigation difficult.
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* WHAT...Dense fog will reduce visibility to less than one nautical mile. * WHERE...Ontonagon to Upper Entrance of Portage Canal MI and Upper Entrance of Portage Canal to Eagle River MI. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Low visibility will make navigation difficult.
The Flood Advisory will expire at 3 PM CDT /2 PM MDT/ this afternoon for a portion of south central North Dakota, including the following areas, Emmons and Sioux. The heavy rain has ended. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures.
* WHAT...Dense fog will reduce visibility to 1 to 2 NM. * WHERE...Chequamegon Bay-Bayfield to Oak Point WI, Port Wing to Sand Island WI and Sand Island to Bayfield WI. * WHEN...Until 1 AM CDT Tuesday. * IMPACTS...Low visibility will make navigation difficult.
this outlet adds: less, saxon, harbor, outer, apostle, islands, beyond, mainland
* WHAT...Dense fog will reduce visibility to less than one nautical mile. * WHERE...Munising to Grand Marais MI, Grand Marais to Whitefish Point MI, 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 bord
this outlet adds: eagle, river, isabelle, lower, entrance, portage, canal
Webcameras and satellite imagery show marine dense fog has begun moving onshore in Alger County. Locally dense fog could reduce visibility to less than 1/4 miles at times, particularly along M-28. Expect the locally dense fog to persist through early Tuesday morning, likely expanding further inland tonight. Remember to use low-beam headlights and allow for extra travel time.
* WHAT...Dense fog will reduce visibility to 3 to 4 NM. * WHERE...Oak Point to Saxon Harbor WI and Outer Apostle Islands Beyond 5 NM from Mainland. * WHEN...Until 1 AM CDT Tuesday. * IMPACTS...Low visibility will make navigation difficult.