National Weather ServiceOregonFlash Flood WarningArchive to October 1, 2026
Flash Flood Warnings in Oregon
The National Weather Service issued 8 flash flood warnings for Oregon in 2025 and 5 a year on average in 2008-2025; in 2021-2025 it had the 50th most of any state. 2026 through September: 5, 5% below the average of 5 for those months in 2008-2025. Malheur was covered most often (29 times since 2008).
How many flash flood warnings does Oregon get?
Every flash flood warning that covered part of Oregon. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 5 |
| 2025 | 8 |
| 2024 | 7 |
| 2023 | 13 |
| 2022 | 3 |
| 2021 | 4 |
| 2020 | 1 |
| 2019 | 4 |
| 2018 | 2 |
| 2017 | 8 |
| 2016 | 5 |
| 2015 | 6 |
| 2014 | 7 |
| 2013 | 9 |
| 2012 | 2 |
| 2011 | 5 |
| 2010 | 9 |
| 2009 | 4 |
| 2008 | 0 |
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 |
|---|---|---|---|
| Malheur | 29 | 15 | August 15, 2026 |
| Baker | 26 | 11 | August 15, 2026 |
| Grant | 12 | 5 | August 30, 2025 |
| Morrow | 10 | 1 | August 30, 2025 |
| Umatilla | 10 | 1 | August 30, 2025 |
| Wallowa | 8 | 4 | August 23, 2023 |
| Wasco | 6 | 1 | May 20, 2023 |
| Deschutes | 4 | 1 | May 21, 2023 |
| Harney | 4 | 2 | September 10, 2025 |
| Jefferson | 4 | 2 | December 19, 2025 |
| Multnomah | 4 | 0 | January 13, 2021 |
| Hood River | 3 | 0 | October 21, 2017 |
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.
The latest flash flood warnings for Oregon in AreaZine's record
NWS BoiseWarningAugust 15, 2026
Flash Flood Warning: Baker, OR
Expired 6:15 p.m. PDT, August 15, 2026
NWS BoiseWarningAugust 15, 2026
Flash Flood Warning: Owyhee and Malheur, ID and OR
Expired 4:45 p.m. MDT, August 15, 2026
NWS BoiseWarningAugust 14, 2026
Flash Flood Warning: Baker, OR
Expired 5:00 p.m. PDT, August 14, 2026
NWS BoiseWarningJuly 14, 2026
Flash Flood Warning: Malheur, OR
Expired 7:00 p.m. MDT, July 14, 2026
NWS BoiseWarningJuly 14, 2026
Flash Flood Warning: Malheur, OR
Expired 6:30 p.m. MDT, July 14, 2026
This list is AreaZine's record of the NWS alert feed, kept since April 6, 2026; the counts above come from the complete IEM archive.
Source: National Weather Service alerts (api.weather.gov).
What is a flash flood warning?
A flash flood warning means flash flooding is happening or about to happen: water rising fast in streams, streets or dry washes, usually within six hours of heavy rain or a dam or levee failure. A warning means the hazard is happening, about to happen, or very likely: act now to protect people and property. The national record · Every warning type in Oregon.