National Weather ServiceFloridaDense Fog AdvisoryArchive to October 1, 2026
Dense Fog Advisories in Florida
The National Weather Service issued 176 dense fog advisories for Florida in 2025 and 120 a year on average in 2008-2025; in 2021-2025 it had the 3rd most of any state. 2026 through September: 109, 43% above the average of 76 for those months in 2008-2025. Washington was covered most often (365 times since 2008).
How many dense fog advisories does Florida get?
Every dense fog advisory that covered part of Florida. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 109 |
| 2025 | 176 |
| 2024 | 103 |
| 2023 | 120 |
| 2022 | 138 |
| 2021 | 168 |
| 2020 | 90 |
| 2019 | 86 |
| 2018 | 92 |
| 2017 | 158 |
| 2016 | 77 |
| 2015 | 118 |
| 2014 | 144 |
| 2013 | 90 |
| 2012 | 140 |
| 2011 | 155 |
| 2010 | 72 |
| 2009 | 113 |
| 2008 | 127 |
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 Florida 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 Florida?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Washington | 365 | 99 | September 5, 2026 |
| Holmes | 359 | 96 | September 5, 2026 |
| Calhoun | 356 | 103 | September 5, 2026 |
| Jackson | 353 | 94 | September 5, 2026 |
| Gadsden | 352 | 91 | September 5, 2026 |
| Leon | 349 | 87 | September 5, 2026 |
| Coastal Bay | 319 | 94 | May 22, 2026 |
| Liberty | 318 | 56 | March 11, 2025 |
| Madison | 316 | 81 | April 25, 2026 |
| Central Walton | 306 | 96 | September 5, 2026 |
| Inland Bay | 306 | 98 | May 22, 2026 |
| North Walton | 301 | 92 | September 5, 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 Florida.