An abundance of moisture (PWAT 1.5+) and moderate to high instability (MLCAPE of 1000-2000 J/KG) led to the development of terrain and diurnally induced thunderstorm activity. Thunderstorms first began to develop across portions of southwestern Arizona during the early afternoon hours and thereafter, additional storm development occurred across the higher terrain east of Phoenix. Outflow from storms, particularly across the higher terrain east of Phoenix led to the development of more storms across portions of the Phoenix metro, particularly in the area between Chandler and Queen Creek.

Flash Flood in LA PAZ, ARIZONA
From 23-SEP-22 17:30:00 to 23-SEP-22 19:30:00 (MST-7)
Location: BOUSE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A low-water crossing along Highway 72 just northwest of Bouse was impassible due to flooding. No damages or injuries were reported.

Dust Storm in YUMA, ARIZONA
From 23-SEP-22 15:57:00 to 23-SEP-22 16:17:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Photos showed visibility dropping to around 1/4 mile along Highway 95 between Avenue 3E and 7E in blowing dust from thunderstorm outflow. No accidents or injuries were reported.

Flash Flood in MARICOPA, ARIZONA
From 23-SEP-22 13:30:00 to 23-SEP-22 17:00:00 (MST-7)
Location: GLADDEN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Eagle Eye Road was closed between US-60 and Salome Highway due to flooding. Timing estimated from radar. No damages or injuries were reported.

Flash Flood in LA PAZ, ARIZONA
From 23-SEP-22 13:30:00 to 23-SEP-22 15:30:00 (MST-7)
Location: SALOME
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

US-60 near MP 58 in Salome was flooded due to the overflow from Centennial Wash. No damages or injuries were reported.

Flash Flood in LA PAZ, ARIZONA
From 23-SEP-22 15:00:00 to 23-SEP-22 17:00:00 (MST-7)
Location: CIBOLA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

US-95 was impassable at around mile marker 69 due to overflowing water from the washes intersecting the highway. No damages or injuries were reported.

Thunderstorm Wind in LA PAZ, ARIZONA
From 23-SEP-22 13:10:00 to 23-SEP-22 13:10:00 (MST-7)
Location: SALOME
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Report from trained spotter described window broken from north side of the local post office and roof damage at LNWilliams Engineering and Mining Manufacturing Building. Both of these buildings located along US-60 in the town of Salome. Winds were estimated at around 60 mph. Timing estimated from radar. No injuries were reported.

Thunderstorm Wind in MARICOPA, ARIZONA
From 23-SEP-22 17:47:00 to 23-SEP-22 17:47:00 (MST-7)
Location: CHANDLER ARPT
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

A 63 mph wind gust was measured at the Chandler Municipal Airport.

Thunderstorm Wind in YUMA, ARIZONA
From 23-SEP-22 15:42:00 to 23-SEP-22 15:42:00 (MST-7)
Location: FISHERS LNDG
Magnitude: 66.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Yuma Proving Ground Station measured a peak gust of 76 mph.