National Weather ServiceArizonaFlood WarningArchive to October 11, 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) | 39 |
| 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 11, 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 11, 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 |
| Coconino | 26 | 17 | October 2, 2026 |
| La Paz | 25 | 8 | August 13, 2026 |
| Navajo | 20 | 13 | October 2, 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 11, 2026.
The latest flood warnings for Arizona in AreaZine's record
NWS FlagstaffWarningOctober 3, 2026
Flood Warning: Coconino and Navajo, AZ
Expired 2:15 a.m. PDT, October 3, 2026
NWS FlagstaffWarningOctober 1, 2026
Flood Warning: Coconino and Navajo, AZ
Expired 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
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).
Every flood warning for Arizona in AreaZine's record
42 notices in AreaZine's record; the latest first below. Every one, oldest first: July 17, 2026 to October 3, 2026.
- Flood Warning: Cochise and Graham, AZ Cochise and Graham expired
- Flood Warning: Greenlee, AZ Greenlee expired
- Flood Warning: Cochise, Graham and Greenlee, AZ Cochise, Graham and Greenlee expired
- Flood Warning: Greenlee, AZ Greenlee expired
- Flood Warning: Pima, AZ Pima expired
- Flood Warning: Cochise, AZ Cochise expired
- Flood Warning: Pima, AZ Pima expired
- Flood Warning: Cochise, Graham, Pima and 1 more, AZ Cochise, Graham, Pima and 1 more expired
- Flood Warning: Pima and Pinal, AZ Pima and Pinal expired
- Flood Warning: Graham, Pima and Pinal, AZ Graham, Pima and Pinal expired
Source: National Weather Service alerts (api.weather.gov). A U.S. Government work, in the public domain.
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.
How does Arizona compare with its neighbours?
California gets the most on Arizona's border: 70 a year in 2021-2025.
| State | A year, 2021-2025 | A year, 2008-2025 | Rank of all states |
|---|---|---|---|
| California | 70 | 48 | 26th |
| Arizona | 45 | 26 | 31st |
| Colorado | 30 | 29 | 39th |
| New Mexico | 12 | 10 | 47th |
| Nevada | 10 | 14 | 48th |
| Utah | 6 | 9 | 50th |
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 11, 2026.
More records for Arizona
- Flood Watches in Arizona7 a year
- Flood Advisories in Arizona380 a year
- Severe Thunderstorm Warnings in Arizona336 a year
- Flash Flood Warnings in Arizona275 a year
- Every warning type in Arizona
- Flood Warnings in every state5,603 a year nationally