Thunderstorms on the 19th initiated across southeast Arizona and along the Mogollon Rim during the late morning/early afternoon hours before pushing into the lower elevations of south-central Arizona. A couple of upper level features, which included an area of low pressure over northern Sonora and a shortwave trough over the Great Basin, aided in ascent over the region in an environment characterized by high instability (MUCAPE 2,000 J/kg) and anomalously high moisture (PWATs 1.8-2.2). Given the moisture in place, thunderstorms were able to become efficient rainfall producers, leading to multiple reports of flash flooding across the area. No injuries were reported.

Flash Flood in LA PAZ, ARIZONA
From 19-AUG-22 21:24:00 to 19-AUG-22 22:24:00 (MST-7)
Location: SALOME
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

A video showed a wash flowing across a low water crossing south of Salome on Harquahala Road, making the roadway impassable. No damage or injuries were reported.

Flash Flood in MARICOPA, ARIZONA
From 19-AUG-22 16:53:00 to 19-AUG-22 17:03:00 (MST-7)
Location: FOUNTAIN HILLS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

An image showed Ashbrook Wash running across a low water crossing along El Pueblo Boulevard north of Grande Boulevard, making the road impassable. No damage or injuries were reported.

Flash Flood in MARICOPA, ARIZONA
From 19-AUG-22 21:54:00 to 19-AUG-22 23:06:00 (MST-7)
Location: TONOPAH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A FCDMC streamflow gage along Delaney Wash exceeded alarm stage, impacting a downstream low water crossing along 411th Avenue. At 2139MST, the gage peaked at a depth of 2.94 feet and a flow of 426 CFS. No damage or injuries were reported.

Flash Flood in MARICOPA, ARIZONA
From 19-AUG-22 18:03:00 to 19-AUG-22 18:49:00 (MST-7)
Location: CAVE CREEK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A FCDMC streamflow gage along Cave Creek exceeded alarm stage, impacting downstream low water crossings such as Canyon Creek Road. At 1809MST, the gage peaked at a depth of 6.89 feet and a flow of 3,670 CFS. No damage or injuries were reported.

Flash Flood in MARICOPA, ARIZONA
From 19-AUG-22 18:54:00 to 19-AUG-22 19:54:00 (MST-7)
Location: MATTHIE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

A video showed Flying E Wash flowing across a low water crossing along Vulture Mine Road, making the roadway impassable. An upstream FCDMC streamflow gage along the wash exceeded alarm stage, peaking at a depth of 1.77 feet and a flow of 269 CFS at 1858MST. No damage or injuries were reported.

Flood in YUMA, ARIZONA
From 20-AUG-22 00:00:00 to 20-AUG-22 13:00:00 (MST-7)
Location: HORN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A video taken at sunrise on the 20th showed Hoodoo Wash flowing across a low water crossing along Palomas Road, making the road impassable. This was the result of heavy rain that occurred during the night of the 19th. No damage or injuries were reported.

Flash Flood in MARICOPA, ARIZONA
From 20-AUG-22 00:10:00 to 20-AUG-22 02:26:00 (MST-7)
Location: CAMEL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A FCDMC streamflow gage along Columbus Wash exceeded alarm stage, impacting downstream low water crossings along Highline Road and 579th Avenue. At 0110MST, the gage peaked at a depth of 3.57 feet and a flow of 322 CFS. No damage or injuries were reported.

Thunderstorm Wind in MARICOPA, ARIZONA
From 19-AUG-22 18:46:00 to 19-AUG-22 18:46:00 (MST-7)
Location: BUMSTEAD
Magnitude: 39.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A large tree was uprooted in a neighborhood near Bullard Avenue and Larkspur Drive, crashing through a cinder block wall and causing damage to the backyard of a home. No injuries were reported.

Flash Flood in MARICOPA, ARIZONA
From 19-AUG-22 18:00:00 to 19-AUG-22 19:00:00 (MST-7)
Location: CAVE CREEK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A low water crossing on Pima Road south of Legend Trail Parkway became impassable due to a wash flowing approximately one foot in depth over the roadway. No damage or injuries were reported.

Flash Flood in MARICOPA, ARIZONA
From 19-AUG-22 21:30:00 to 19-AUG-22 23:30:00 (MST-7)
Location: TONOPAH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

MCDOT reported that Centennial Road between 517th Avenue and 555th Avenue was closed due to flooding in Centennial Wash. Timing estimated from radar. No damage or injuries were reported.

Flash Flood in MARICOPA, ARIZONA
From 19-AUG-22 18:30:00 to 19-AUG-22 19:30:00 (MST-7)
Location: ESTRELLA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

ADOT reported that SR 238 was closed due to flooding between mileposts 7-23. No damage or injuries were reported.

Flash Flood in MARICOPA, ARIZONA
From 19-AUG-22 21:20:00 to 19-AUG-22 23:20:00 (MST-7)
Location: GLADDEN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

MCDOT reported that Salome Road was closed between I-10 and milepost 22 due to flooding. No damage or injuries were reported.