National Weather ServiceMississippiDense Fog AdvisoryArchive to October 1, 2026
Dense Fog Advisories in Mississippi
The National Weather Service issued 113 dense fog advisories for Mississippi in 2025 and 76 a year on average in 2008-2025; in 2021-2025 it had the 6th most of any state. 2026 through September: 57, 37% above the average of 42 for those months in 2008-2025. Hancock was covered most often (346 times since 2008).
How many dense fog advisories does Mississippi get?
Every dense fog advisory that covered part of Mississippi. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 57 |
| 2025 | 113 |
| 2024 | 83 |
| 2023 | 82 |
| 2022 | 82 |
| 2021 | 110 |
| 2020 | 78 |
| 2019 | 89 |
| 2018 | 60 |
| 2017 | 117 |
| 2016 | 62 |
| 2015 | 58 |
| 2014 | 66 |
| 2013 | 56 |
| 2012 | 85 |
| 2011 | 68 |
| 2010 | 53 |
| 2009 | 60 |
| 2008 | 44 |
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 Mississippi 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 Mississippi?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Hancock | 346 | 16 | March 8, 2023 |
| George | 344 | 61 | May 11, 2026 |
| Stone | 337 | 60 | May 11, 2026 |
| Harrison | 329 | 16 | March 8, 2023 |
| Jackson | 327 | 16 | March 8, 2023 |
| Pearl River | 321 | 84 | May 11, 2026 |
| Walthall | 274 | 71 | April 11, 2026 |
| Pike | 272 | 70 | April 11, 2026 |
| Greene | 263 | 50 | May 10, 2026 |
| Perry | 256 | 50 | May 10, 2026 |
| Covington | 247 | 71 | June 25, 2026 |
| Amite | 246 | 63 | April 11, 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 Mississippi.