National Weather ServiceMissouriDense Fog AdvisoryArchive to October 1, 2026
Dense Fog Advisories in Missouri
The National Weather Service issued 105 dense fog advisories for Missouri in 2025 and 70 a year on average in 2008-2025; in 2021-2025 it had the 12th most of any state. 2026 through September: 50, 13% above the average of 44 for those months in 2008-2025. Pemiscot was covered most often (214 times since 2008).
How many dense fog advisories does Missouri get?
Every dense fog advisory that covered part of Missouri. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 50 |
| 2025 | 105 |
| 2024 | 95 |
| 2023 | 57 |
| 2022 | 43 |
| 2021 | 76 |
| 2020 | 83 |
| 2019 | 117 |
| 2018 | 78 |
| 2017 | 98 |
| 2016 | 77 |
| 2015 | 59 |
| 2014 | 48 |
| 2013 | 64 |
| 2012 | 47 |
| 2011 | 36 |
| 2010 | 55 |
| 2009 | 53 |
| 2008 | 73 |
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
When in the year does Missouri get them?
Sum of 2008-2025; the busiest month is labelled.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
Where in Missouri?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Pemiscot | 214 | 45 | July 16, 2026 |
| Dunklin | 205 | 42 | July 16, 2026 |
| Stone | 194 | 29 | May 24, 2026 |
| Christian | 193 | 31 | May 24, 2026 |
| Taney | 189 | 32 | May 24, 2026 |
| Douglas | 186 | 35 | May 24, 2026 |
| Wright | 177 | 32 | May 24, 2026 |
| Ozark | 176 | 33 | May 24, 2026 |
| Webster | 176 | 30 | May 24, 2026 |
| Howell | 171 | 33 | April 25, 2026 |
| Texas | 171 | 34 | May 9, 2026 |
| Greene | 166 | 28 | May 24, 2026 |
The NWS issues these products for counties or forecast zones; a zone can be part of a county or a mountain range.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
What is a dense fog advisory?
A dense fog advisory means fog will cut visibility to a quarter mile or less over a wide area. An advisory is issued for a hazard less serious than a warning that can still cause inconvenience or danger if people are not careful. The national record · Every warning type in Missouri.