Severe Weather History


Hazard archive · 1950 — present

Flood in Maricopa County, Arizona

81

Recorded events

4

Direct deaths

0

Direct injuries

$9.5M

Property damage

Flood in Maricopa County, Arizona: 81 recorded events between 1998 and 2025. The strongest on record measured 0. That places the county #100 nationally and #1 statewide for this hazard.

Decade by decade

Flood in Maricopa County, Arizona: events per decade

Flood in Maricopa County, Arizona: recorded events per decade
Flood in Maricopa County, Arizona: recorded events per decade

Reporting practice changed over time — early decades are undercounted, not calmer.

The busiest decade for flood in Maricopa County is the 2020s, when 43 of the county's 81 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.

Within the Maricopa County archive, flood makes up 2.9% of all recorded severe weather across 9 hazard types. Nationally the county sits at #100 for this hazard and #1 within Arizona, putting it in the 96.7 percentile of all U.S. counties.

Seasonality

Events by month

6Jan
2Feb
28Mar
7Apr
1May
1Jun
9Jul
13Aug
5Sep
4Oct
3Nov
2Dec

Mar is the peak month for flood in Maricopa County with 28 recorded events, while May is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.

Significant events

Deadliest on record

DateLocationScaleDeathsInjuriesDamage
Apr 1, 2023GOMEZ ARPT020$0
Mar 4, 2023SKYWAY VLG010$0
Mar 8, 2013SCOTTSDALE010$0
Source: NOAA/NCEI Storm Events · dates UTC

Most recent

Latest recorded events

DateLocationMagnitudeDamage
Nov 19, 2025GILLESPIE0$0
Oct 14, 2025PARADISE VLY0$0
Sep 4, 2025PARADISE VLY0$0
Aug 27, 2025PHOENIX TURF ARPT0$0
Aug 26, 2025STANWIX0$0
Aug 23, 2024SCOTTSDALE0$5K
Apr 1, 2024PARADISE VLY0$0
Jan 23, 2024GILA BEND0$0
May 1, 2023SADDLE0$0
Apr 1, 2023SADDLE0$0
Source: NOAA/NCEI Storm Events · dates UTC · recent entries may be preliminary

Other hazards here

More from Maricopa County

County overview →

From the record

What the reports say

Written by National Weather Service staff at the time of the event · public domain

Quick answers

Frequently asked

How many flood events are on record in Maricopa County, Arizona?

81 flood events are recorded in Maricopa County between 1998 and 2025, causing 4 direct deaths.

What is the strongest flood recorded in Maricopa County?

The strongest flood on record in Maricopa County measured 0.

Where does the flood data for Maricopa County come from?

All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.

Cite this page

“Flood in Maricopa County, Arizona.” Severe Weather History. severeweatherhistory.com/county/arizona/maricopa-county/flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.


Historical reference only — for official alerts visit weather.gov