National Weather ServiceArizonaFlood WarningArchive to October 1, 2026
Flood Warnings in Arizona
The National Weather Service issued 47 flood warnings for Arizona in 2025 and 26 a year on average in 2008-2025; in 2021-2025 it had the 31st most of any state. 2026 through September: 38, 78% above the average of 21 for those months in 2008-2025. Maricopa was covered most often (175 times since 2008).
How many flood warnings does Arizona get?
Every flood warning that covered part of Arizona. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 38 |
| 2025 | 47 |
| 2024 | 4 |
| 2023 | 69 |
| 2022 | 38 |
| 2021 | 66 |
| 2020 | 20 |
| 2019 | 42 |
| 2018 | 26 |
| 2017 | 20 |
| 2016 | 29 |
| 2015 | 13 |
| 2014 | 30 |
| 2013 | 12 |
| 2012 | 16 |
| 2011 | 0 |
| 2010 | 17 |
| 2009 | 1 |
| 2008 | 15 |
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 |
|---|---|---|---|
| Maricopa | 175 | 57 | September 29, 2026 |
| Pima | 92 | 10 | September 29, 2026 |
| Pinal | 75 | 18 | September 29, 2026 |
| Gila | 66 | 19 | September 30, 2026 |
| Mohave | 40 | 8 | August 15, 2026 |
| Yavapai | 34 | 21 | November 23, 2025 |
| La Paz | 25 | 8 | August 13, 2026 |
| Coconino | 25 | 16 | September 30, 2026 |
| Navajo | 19 | 12 | September 30, 2026 |
| Cochise | 17 | 5 | September 30, 2026 |
| Greenlee | 12 | 3 | September 30, 2026 |
| Yuma | 10 | 6 | September 27, 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.
The latest flood warnings for Arizona in AreaZine's record
NWS FlagstaffWarningSeptember 30, 2026
Flood Warning: Coconino and Navajo, AZ
In force until 7:00 a.m. PDT, October 1, 2026
NWS FlagstaffWarningSeptember 30, 2026
Flood Warning: Navajo, AZ
Expired 12:00 p.m. PDT, September 30, 2026
NWS FlagstaffWarningSeptember 29, 2026
Flood Warning: Apache, Gila and Navajo, AZ
Expired 10:45 a.m. PDT, September 30, 2026
NWS TucsonWarningSeptember 29, 2026
Flood Warning: Cochise and Graham, AZ
Expired 3:30 a.m. PDT, September 30, 2026
NWS TucsonWarningSeptember 29, 2026
Flood Warning: Greenlee, AZ
Expired 2:00 p.m. PDT, September 30, 2026
NWS TucsonWarningSeptember 29, 2026
Flood Warning: Cochise, Graham and Greenlee, AZ
Expired 3:00 a.m. PDT, September 30, 2026
NWS FlagstaffWarningSeptember 29, 2026
Flood Warning: Apache, Coconino and Navajo, AZ
Expired 5:45 a.m. PDT, September 30, 2026
NWS TucsonWarningSeptember 29, 2026
Flood Warning: Greenlee, AZ
Expired 12:00 a.m. PDT, September 30, 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 flood warning?
A flood warning means flooding is happening or about to happen. The NWS issues it both for rivers at forecast points (river flood warnings) and for areas where water ponds or runs off (areal flood warnings); AreaZine counts both. 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 Arizona.