Arizona, 2022

Flash Flooding and Heavy Rain in Arizona, July 25, 2022

July 25, 2022 · NWS FGZ · 6 events in 3 counties and zones

Deep monsoon moisture remained across northern Arizona which allowed the formation of strong thunderstorms with heavy rain that produced flash flooding.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
6

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS FGZ wrote it up.

Deep monsoon moisture remained across northern Arizona which allowed the formation of strong thunderstorms with heavy rain that produced flash flooding.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Flagstaff, AZ wrote its last area forecast discussion before the first event at Jul 24, 3:00 PM MST, 18 hours 35 minutes earlier.

Area forecast discussion, Jul 24, 3:00 PM MST, 18 hours 35 minutes before
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The radar

The Flagstaff radar (KFSX), 112 km away, was scanning. The volume nearest the first event began at 16:34 UTC.

Open the radar archive at this moment

Event by event

5 flash flood, 1 heavy rain. Local standard time, as filed.

Heavy Rain, Yavapai

When
July 25, 9:35 AM MST to 12:25 PM MST
Where
Yavapai County, 2.2 mi SE of Whipple to 2.62 mi WNW of Forbing Park
Reported by
Trained Spotter
Coordinates
34.530, -112.420

Trained spotters reported heavy rain in the Prescott area (1 to 2.5 inches).

Flash Flood, Yavapai

When
July 25, 12:10 PM MST to 3:10 PM MST
Where
Yavapai County, 4.47 mi E of Mayer to 7.16 mi SSW of Skull Vly
Cause
Heavy Rain
Reported by
County Official
Coordinates
34.392, -112.152

Flooding was reported in Alberson Wash/Rose Creek, Lynx Creek, and Agua Fria River all the way to Skull Valley.

Flash Flood, Coconino

When
July 25, 3:58 PM MST to 6:00 PM MST
Where
Coconino County, 0.93 mi SW of Flagstaff to 0.89 mi SW of Flagstaff
Cause
Heavy Rain
Reported by
Public
Coordinates
35.191, -111.662

Street flooding on South Milton was reported (videos) on social media.

Flash Flood, Coconino

When
July 25, 6:15 PM MST to 7:15 PM MST
Where
Coconino County, 7.23 mi ENE of Moenkopi to 7.23 mi SSW of Moenave
Cause
Heavy Rain
Reported by
Other Federal Agency
Coordinates
36.155, -111.098

A stream gauge reported a 1.6 foot rise on Moenkopi Wash.

Flash Flood, Navajo

When
July 25, 7:22 PM MST to 9:30 PM MST
Where
Navajo County, 4.94 mi SSE of White Cone to 11.91 mi ESE of Pinon
Cause
Heavy Rain
Reported by
Public
Coordinates
35.532, -110.043

Reports of flooding on the Hopi Nation included First Mesa, Highway 264, Polacca Wash, and other locations.

Flash Flood, Coconino

When
July 25, 7:25 PM MST to 8:30 PM MST
Where
Coconino County, 4.29 mi NNE of Cameron to 6.66 mi WNW of Cameron
Cause
Heavy Rain
Reported by
Storm Chaser
Coordinates
35.940, -111.400

A storm chaser posted a video of flash flooding in the Cameron area on Twitter.

What these are

Heavy Rain
Rainfall totals unusual for the place and season that did not produce a flood.
Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Arizona in 2022Every state in 2022This day in weather historyWarnings in Arizona, July 2022

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-30. Each event’s entry at NCEI: 1048890, 1048907, 1049296, 1049295, 1049298, 1048910.