National Weather ServiceAlaskaFlood AdvisoryArchive to October 1, 2026
Flood Advisories in Alaska
The National Weather Service issued 63 flood advisories for Alaska in 2025 and 50 a year on average in 2008-2025; in 2021-2025 it had the 38th most of any state. 2026 through September: 40, 6% below the average of 43 for those months in 2008-2025. Middle Tanana Valley was covered most often (85 times since 2008).
How many flood advisories does Alaska get?
Every flood advisory that covered part of Alaska. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 40 |
| 2025 | 63 |
| 2024 | 55 |
| 2023 | 70 |
| 2022 | 59 |
| 2021 | 24 |
| 2020 | 50 |
| 2019 | 39 |
| 2018 | 33 |
| 2017 | 30 |
| 2016 | 48 |
| 2015 | 39 |
| 2014 | 69 |
| 2013 | 63 |
| 2012 | 58 |
| 2011 | 54 |
| 2010 | 49 |
| 2009 | 58 |
| 2008 | 30 |
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 Alaska 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 Alaska?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Middle Tanana Valley | 85 | 4 | September 4, 2023 |
| Upper Tanana Valley and the Fortymile Country | 82 | 2 | June 1, 2023 |
| Susitna Valley | 54 | 10 | January 24, 2025 |
| Juneau Borough and Northern Admiralty Island | 53 | 0 | August 30, 2022 |
| Deltana and Tanana Flats | 52 | 2 | August 29, 2023 |
| Taiya Inlet and Klondike Highway | 51 | 0 | September 3, 2022 |
| Western Prince William Sound | 50 | 4 | January 24, 2025 |
| Anchorage | 44 | 17 | October 2, 2025 |
| Yukon Flats and Surrounding Uplands | 42 | 2 | June 2, 2023 |
| Western Kenai Peninsula | 41 | 7 | January 24, 2025 |
| Copper River Basin | 40 | 7 | July 25, 2024 |
| Southern Inner Channels | 36 | 0 | September 7, 2022 |
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 Alaska.