Dense Fog Advisory Extended for Adams, Brown and Pike Counties in Illinois and Parts of Missouri
The National Weather Service St Louis MO has pushed the end time of a dense fog advisory back, saying it now runs longer than first issued.
4 reports on this incident · first at Sep 10, 2026, 11:09 p.m. ET
Earlier reports
Sep 10, 2026, 11:18 p.m. ET
Dense Fog Advisory for Adams, Brown and Pike Counties in Illinois and Parts of Missouri Until 10 AM CDT Friday
The National Weather Service St Louis MO has issued a Dense Fog Advisory for portions of west central Illinois and central and northeast Missouri, according to the advisory record. The advisory took effect at 9:56 p.m. CDT on Thursday, September 10, 2026, and expires at 10 a.m. CDT on Friday, September 11, 2026.
The advisory covers 11 zones across the two states, including Adams, Brown and Pike counties in Illinois and Knox, Lewis, Shelby, Marion, Monroe, Ralls, Pike and Audrain counties in Missouri. Cities listed in the advisory include Mexico, Mount Sterling, Hannibal, Quincy, Pittsfield and Bowling Green.
Visibility of one quarter to one half mile is expected in dense fog, according to the advisory. The weather service warns that low visibility could make driving conditions hazardous.
Drivers are advised to slow down, use headlights and leave plenty of distance ahead, the advisory states.
Sep 10, 2026, 11:14 p.m. ET
Dense Fog Advisory Issued for Parts of Illinois and Missouri Until 10 AM CDT Friday
The National Weather Service St Louis MO has issued a Dense Fog Advisory for portions of west central Illinois and central and northeast Missouri, warning that low visibility could make driving conditions hazardous. The advisory is in effect until 10 AM CDT Friday, September 11, 2026, according to the agency's advisory record.
The Weather Service states that visibility will be reduced to one quarter to one half mile in dense fog. The advisory covers 11 zones across the two states, including Adams, Brown and Pike counties in Illinois and Knox, Lewis, Shelby, Marion, Monroe, Ralls, Pike and Audrain counties in Missouri. Cities named in the advisory include Mexico, Mount Sterling, Hannibal, Quincy, Pittsfield and Bowling Green.
The advisory was issued at 9:56 PM CDT on Thursday, September 10, 2026. The Weather Service advises drivers to slow down, use their headlights, and leave plenty of distance ahead of them.
Sep 10, 2026, 11:09 p.m. ETFirst report
Dense Fog Advisory for Adams, Brown and Pike Counties in Illinois and Parts of Missouri Until 10 AM CDT Friday
The National Weather Service St Louis MO has issued a Dense Fog Advisory for portions of west central Illinois and central and northeast Missouri, according to the agency's advisory. The advisory took effect at 9:56 PM CDT on Thursday, September 10, 2026, and is scheduled to expire at 10:00 AM CDT on Friday, September 11, 2026.
Visibility is expected to drop to one quarter to one half mile in dense fog, the advisory states. The affected areas include Adams, Brown and Pike counties in Illinois, and Knox, Lewis, Shelby, Marion, Monroe, Ralls, Pike and Audrain counties in Missouri — 11 zones in total. Cities named in the advisory include Mexico, Mount Sterling, Hannibal, Quincy, Pittsfield and Bowling Green.
The advisory notes that low visibility could make driving conditions hazardous. Drivers are urged to slow down, use headlights, and leave plenty of distance ahead of them.
The advisory remains in effect until 10:00 AM CDT Friday.
Was this report accurate and useful?
Sources
Revision history
- Version 111 Sept 2026, 03:23current
First published.
- Version 111 Sept 2026, 03:14current
First published.
- Version 111 Sept 2026, 03:09current
First published.
- Version 111 Sept 2026, 03:18current
First published.
How we work
This site models an investigative reporter rather than a wire desk. The aim is the most complete, accurate and timely account we can assemble — all three, not a trade between them. Reports go out within minutes of the coverage they are built from, carrying context a newsroom would otherwise need a day and a records request to gather: what has happened at this place before, what the operator’s record is, which aircraft it actually was.
Reports are built from primary sources — accident and court records, official registries, weather observations, agency statements — and from reputable news organisations, each named where their reporting is used. Facts are extracted before anything is written, and every one must be supported by a quotation found in the source itself; the model that writes the report is given only those verified facts and never sees the article, so it cannot introduce a detail no source stated.
Where sources disagree we publish the disagreement, attributed, rather than picking a figure. Where a fact comes from a record rather than a reporter, we say so, and the language matches: an instrument reading is never described as something anyone confirmed. Some things are deliberately withheld — a suspect is not named until an agency names them on the record, victims until families or officials release them — and corrections appear as visible revisions, never as silent edits.
None of that makes a report true. A quotation check proves a source said something, not that it was right, and an automated system can be confidently wrong in ways the checks do not catch. If something here is wrong, the feedback above is how it gets found. The full methodology, including what we refuse to publish.