Arizona, 2022Flash Flooding in Arizona, July 25 to 26, 2022
July 25 to 26, 2022 · NWS PSR · 2 events in 1 county or zone
An MCV situated in western Pima County on the morning of the 25th led to the development of showers/thunderstorms into Maricopa County. Deep monsoonal moisture, with PWATs in excess of 2 across south-central Arizona, allowed for showers/thunderstorms to be efficient rainfall producers leading to isolated flash flooding.
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- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 2
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.
An MCV situated in western Pima County on the morning of the 25th led to the development of showers/thunderstorms into Maricopa County. Deep monsoonal moisture, with PWATs in excess of 2 across south-central Arizona, allowed for showers/thunderstorms to be efficient rainfall producers leading to isolated flash flooding. A trained spotter near Arcacia Dr and 186th Dr reported 0.50 of rain in 20 minutes. To the south, flash flooding was reported in Waterman Wash, making roads impassable and leading to a water rescue. Additional heavy rainfall in the evening resulted in more isolated flash flooding. No injuries were reported.
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 Phoenix, AZ wrote its last area forecast discussion before the first event at Jul 25, 4:31 AM MST, 4 hours 14 minutes earlier.
Area forecast discussion, Jul 25, 4:31 AM MST, 4 hours 14 minutes before
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Special weather statement, Jul 25, 7:06 AM MST, 1 hour 39 minutes before
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</html>Special weather statement, Jul 25, 7:53 AM MST, 52 minutes before
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</html>Flash Flood, Maricopa
- When
- July 25, 8:45 AM MST to 9:45 AM MST
- Where
- Maricopa County, 12.25 mi SSE of Liberty to 12.18 mi SSW of Liberty
- Cause
- Heavy Rain
- Reported by
- Public
- Coordinates
- 33.218, -112.395
Public videos showed Waterman Wash flowing with several feet of water, making Riggs Rd impassable. A water rescue was also reported in this area. Further downstream, ADOT reported that Tuthill Rd between Fairview St and Pecos Rd as well as Narramore Rd between Airport Rd and Dean Rd were closed due to flooding. These roads are unbridged crossings through Waterman Wash.
Flash Flood, Maricopa
- When
- July 25, 11:30 PM MST to July 26, 1:30 AM MST
- Where
- Maricopa County, 5.73 mi SW of New River to 5.77 mi SW of New River
- Cause
- Heavy Rain
- Reported by
- Public
- Coordinates
- 33.859, -112.198
A video on social media showed water flowing across New River Rd, causing the driver taking the video to turn around. A nearby FCDMC at the New River Landfill recorded over 2 of rain in an hour.
- 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.
- Excessive Heat in Oregon, July 25 to 30, 202216 deaths · 2 events
- Rip Current in Puerto Rico, July 25, 20221 death · 1 event
- High Wind and Strong Wind in Alaska, July 25 to 26, 20222 injured · $1.4 million · 53 kt wind · 2 events
- Hail and Damaging Winds in Virginia, July 25, 2022$255,000 · 1.75 in hail · 19 events
- Flash Flooding in New Mexico, July 25, 2022$165,000 · 5 events
- Flash Flooding and Damaging Winds in Nevada, July 25 to 27, 2022$107,000 · 52 kt wind · 6 events
- Damaging Winds and Lightning Strikes in Virginia, July 25, 2022$69,000 · 60 kt wind · 14 events
- Marine Thunderstorm Winds in North Atlantic Coastal Waters, July 25, 202256 kt wind · 34 events
- Damaging Winds in Maryland, July 25, 2022$30,000 · 55 kt wind · 7 events
- Damaging Winds in Virginia, July 25, 2022$22,000 · 50 kt wind · 13 events
- Marine Thunderstorm Winds in Gulf of Mexico, July 25 to 26, 202217 events
- Damaging Winds in North Carolina, July 25, 2022$15,000 · 50 kt wind · 7 events
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 2026-09-24. Each event’s entry at NCEI: 1046742, 1046745.