National Weather ServiceRhode IslandDense Fog AdvisoryArchive to October 1, 2026
Dense Fog Advisories in Rhode Island
The National Weather Service issued 2 dense fog advisories for Rhode Island in 2025 and 13 a year on average in 2008-2025; in 2021-2025 it had the 43rd most of any state. 2026 through September: 0, 100% below the average of 10 for those months in 2008-2025. Newport was covered most often (207 times since 2008).
How many dense fog advisories does Rhode Island get?
Every dense fog advisory that covered part of Rhode Island. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 0 |
| 2025 | 2 |
| 2024 | 9 |
| 2023 | 16 |
| 2022 | 19 |
| 2021 | 11 |
| 2020 | 18 |
| 2019 | 18 |
| 2018 | 23 |
| 2017 | 27 |
| 2016 | 4 |
| 2015 | 20 |
| 2014 | 9 |
| 2013 | 16 |
| 2012 | 11 |
| 2011 | 14 |
| 2010 | 4 |
| 2009 | 5 |
| 2008 | 7 |
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 Rhode Island 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 Rhode Island?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Newport | 207 | 23 | July 1, 2025 |
| Washington | 203 | 22 | July 1, 2025 |
| Block Island | 178 | 17 | March 31, 2025 |
| Bristol | 149 | 17 | July 1, 2025 |
| Eastern Kent | 137 | 15 | July 1, 2025 |
| Southeast Providence | 122 | 17 | March 31, 2025 |
| Western Kent | 120 | 15 | July 1, 2025 |
| Northwest Providence | 112 | 18 | March 31, 2025 |
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 Rhode Island.