National Weather ServiceNew YorkDense Fog AdvisoryArchive to October 1, 2026
Dense Fog Advisories in New York
The National Weather Service issued 12 dense fog advisories for New York in 2025 and 20 a year on average in 2008-2025; in 2021-2025 it had the 39th most of any state. 2026 through September: 17, 19% above the average of 14 for those months in 2008-2025. Southeast Suffolk was covered most often (202 times since 2008).
How many dense fog advisories does New York get?
Every dense fog advisory that covered part of New York. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 17 |
| 2025 | 12 |
| 2024 | 22 |
| 2023 | 20 |
| 2022 | 18 |
| 2021 | 11 |
| 2020 | 26 |
| 2019 | 19 |
| 2018 | 31 |
| 2017 | 21 |
| 2016 | 10 |
| 2015 | 34 |
| 2014 | 17 |
| 2013 | 27 |
| 2012 | 19 |
| 2011 | 29 |
| 2010 | 8 |
| 2009 | 17 |
| 2008 | 12 |
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 New York 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 New York?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Southeast Suffolk | 202 | 31 | May 10, 2026 |
| Northeast Suffolk | 192 | 30 | May 10, 2026 |
| Southwest Suffolk | 185 | 30 | May 10, 2026 |
| Northwest Suffolk | 175 | 28 | May 10, 2026 |
| Southern Nassau | 141 | 25 | May 10, 2026 |
| Northern Nassau | 122 | 21 | May 10, 2026 |
| Southern Westchester | 110 | 13 | March 16, 2026 |
| Southern Queens | 94 | 13 | May 10, 2026 |
| Kings (Brooklyn) | 91 | 10 | May 10, 2026 |
| Northern Westchester | 70 | 10 | March 16, 2026 |
| Bronx | 68 | 10 | March 16, 2026 |
| Northern Queens | 68 | 10 | March 16, 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 New York.