1 warning is in effect for Maricopa County, AZ. The most serious is a flood warning.
Since 2016 the National Weather Service has issued about 2,242 alerts that included Maricopa County, roughly 224 a year. The most common is the flood advisory (694 from 2016 to 2025). The last tornado warning was issued on November 29, 2019. 75 tornadoes have touched down in the county since 1950.
Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS
FLOOD WARNING FOR THE UPSTREAM RELEASE OF PAINTED ROCK DAM ON THE GILA RIVER REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY
Full alert text
* WHAT...Flooding caused by upstream dam release continues.
* WHERE...Maricopa County in south central Arizona...
Northeastern Yuma County in southwestern Arizona...
* WHEN...Until 1100 AM MST Tuesday.
* IMPACTS...Flooding of rivers, creeks, streams, and other low-lying
and flood-prone locations is expected. Low-water crossings are
likely to become inundated with water and may not be passable.
* ADDITIONAL DETAILS...
- At 724 PM MST, water releases from Painted Rock Dam continue with
flow peaking at 3000 cfs. A streamflow gauge immediately
downstream also indicated a stage of 9.93 feet.
- Flooding is expected along the Gila River.
- Some locations that will experience flooding include...
Farmlands and low-water crossings along the Gila River.
- http://www.weather.gov/safety/flood
What to do: Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
Map data: NWS, OpenFreeMap, OpenStreetMap
Recent alerts in Maricopa County
Issued
Alert
Area
Nov 13, 9:24 PM EST
Flood Warning
Maricopa, AZ; Yuma, AZ
Maricopa County alert history
Alert events that included Maricopa County or its forecast zones, from the NWS warning archive.
75 tornadoes have been recorded in Maricopa County since 1950, injuring 58 people. That ranks 1 of 15 counties in Arizona. The most recent was on November 18, 2025 (rated EF0).