National Weather ServiceOregonFlood AdvisoryArchive to October 1, 2026
Flood Advisories in Oregon
The National Weather Service issued 33 flood advisories for Oregon in 2025 and 24 a year on average in 2008-2025; in 2021-2025 it had the 43rd most of any state. 2026 through September: 9, 52% below the average of 19 for those months in 2008-2025. Washington was covered most often (95 times since 2008).
How many flood advisories does Oregon get?
Every flood advisory that covered part of Oregon. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 9 |
| 2025 | 33 |
| 2024 | 9 |
| 2023 | 38 |
| 2022 | 24 |
| 2021 | 21 |
| 2020 | 15 |
| 2019 | 31 |
| 2018 | 20 |
| 2017 | 29 |
| 2016 | 13 |
| 2015 | 51 |
| 2014 | 30 |
| 2013 | 8 |
| 2012 | 44 |
| 2011 | 21 |
| 2010 | 21 |
| 2009 | 22 |
| 2008 | 10 |
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 Oregon 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 Oregon?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Washington | 95 | 7 | December 18, 2025 |
| Clackamas | 88 | 7 | March 12, 2026 |
| Yamhill | 85 | 7 | December 19, 2025 |
| Multnomah | 84 | 7 | December 18, 2025 |
| Marion | 68 | 4 | December 19, 2025 |
| Columbia | 68 | 5 | December 18, 2025 |
| Polk | 67 | 6 | December 19, 2025 |
| Tillamook | 65 | 6 | December 18, 2025 |
| Umatilla | 58 | 7 | April 22, 2026 |
| Clatsop | 56 | 6 | December 18, 2025 |
| Benton | 54 | 4 | December 19, 2025 |
| Union | 50 | 5 | April 22, 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 flood advisory?
A flood advisory covers flooding that is less serious than a warning, such as water on roads or in low-lying areas, that is still a hazard to drivers and walkers. 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 Oregon.