National Weather ServiceArizonaFlood AdvisoryArchive to October 1, 2026
Flood Advisories in Arizona
The National Weather Service issued 286 flood advisories for Arizona in 2025 and 380 a year on average in 2008-2025; in 2021-2025 it had the 10th most of any state. 2026 through September: 349, in line with the average of 357 for those months in 2008-2025. Pima was covered most often (1,487 times since 2008).
How many flood advisories does Arizona get?
Every flood advisory that covered part of Arizona. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 352 |
| 2025 | 286 |
| 2024 | 213 |
| 2023 | 221 |
| 2022 | 641 |
| 2021 | 475 |
| 2020 | 166 |
| 2019 | 329 |
| 2018 | 544 |
| 2017 | 368 |
| 2016 | 376 |
| 2015 | 455 |
| 2014 | 524 |
| 2013 | 510 |
| 2012 | 450 |
| 2011 | 364 |
| 2010 | 401 |
| 2009 | 205 |
| 2008 | 307 |
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 Arizona 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 Arizona?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Pima | 1,487 | 239 | September 30, 2026 |
| Maricopa | 1,262 | 156 | September 30, 2026 |
| Pinal | 936 | 106 | September 29, 2026 |
| Cochise | 902 | 177 | September 30, 2026 |
| Yavapai | 629 | 80 | August 30, 2026 |
| Coconino | 604 | 56 | September 16, 2026 |
| Mohave | 596 | 139 | September 30, 2026 |
| Gila | 589 | 62 | September 30, 2026 |
| Santa Cruz | 516 | 70 | September 29, 2026 |
| La Paz | 481 | 48 | September 29, 2026 |
| Graham | 338 | 37 | October 1, 2026 |
| Navajo | 337 | 40 | September 17, 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 Arizona.