Under a classic setup for storm motion from the Northern Arizona high terrain to Southern Arizona lower deserts, with the monsoon 500mb high positioned over Nevada and Utah, a few multicell storm clusters developed and progressed west-southwest through the lower deserts in the afternoon and evening hours of the 2nd. Increased east-northeast steering flow resulted in relatively high shear values for the monsoon (Sfc-6km shear around 25-30 kts) and very steep mid-level lapse rate (8-8.5 C/km) supported the organized multicellular storm mode with robust updrafts. Inversely, very high DCAPE values, up to 1500-1800 J/kg, supported very strong downbursts. Moisture levels were also above normal which, in combination with the strong updrafts, supported high rainfall rates (1.5-2 inches per hour average). There were a few multicell clusters that moved through Southern Arizona. One through the southeast parts of the greater Phoenix area, another that developed in Yavapai County before descending southwest along US-60 in Maricopa and La Paz Counties, and a third that developed off the Kofa Wilderness terrain south of Quartzsite before being caught by the cluster descending along US-60. Each cluster produced damaging winds, dense blowing dust, small to severe hail, and localized flash flooding.

Dust Storm in SOUTHEAST VALLEY/QUEEN CREEK, ARIZONA
From 02-SEP-22 18:05:00 to 02-SEP-22 18:25:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

Near zero visibility reported at the Phoenix-Mesa Gateway Airport in blowing dust from thunderstorm outflow. No accidents or injuries were reported.

Hail in MARICOPA, ARIZONA
From 02-SEP-22 18:12:00 to 02-SEP-22 18:12:00 (MST-7)
Location: BOYS RANCH
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in PINAL, ARIZONA
From 02-SEP-22 17:45:00 to 02-SEP-22 17:45:00 (MST-7)
Location: PALM SPGS
Magnitude: 56.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: NWS Employee

Several 6-8 inch diameter trees snapped off. Several other newer small trees uprooted. Minor roof damage to some homes under construction. In a nearby subdivision a large willow tree blown over and uprooted. No injuries were reported.

Thunderstorm Wind in PINAL, ARIZONA
From 02-SEP-22 17:55:00 to 02-SEP-22 17:55:00 (MST-7)
Location: MAGMA
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated thunderstorm wind gusts around 60 mph and some minor tree damage. No injuries were reported.

Thunderstorm Wind in PINAL, ARIZONA
From 02-SEP-22 17:55:00 to 02-SEP-22 17:55:00 (MST-7)
Location: MAGMA
Magnitude: 52.00 EG
Property damage: 8.00K
Crop damage: 0.00K
Reported by: Public

A photo on social media shows part of a destroyed metal carport lodged in the side of a home near the intersection of Gantzel Road and Ocotillo Road. Timing and wind speed estimated from radar. No injuries were reported.

Dust Storm in SOUTHEAST VALLEY/QUEEN CREEK, ARIZONA
From 02-SEP-22 18:15:00 to 02-SEP-22 18:35:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Visibility of less than a quarter mile reported along the South Cooper and East Riggs Road in Chandler in blowing dust from thunderstorm outflow. No accidents or injuries were reported.

Dust Storm in NORTHWEST PINAL COUNTY, ARIZONA
From 02-SEP-22 17:50:00 to 02-SEP-22 18:05:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A photo on social media showed near zero visibility in a dust storm in Queen Creek along Ironwood Road north of Ocotillo Road. No damages or injuries were reported.

Dust Storm in SOUTHEAST VALLEY/QUEEN CREEK, ARIZONA
From 02-SEP-22 18:00:00 to 02-SEP-22 18:15:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A video on social media shot while driving south on Higley Road between Pecos Road and Chandler Heights Road shows a large wall of dust moving west across the area. Visibility fell to less than 1/4 mile in the dust. No damages or injuries were reported.

Flash Flood in MARICOPA, ARIZONA
From 02-SEP-22 19:50:00 to 02-SEP-22 21:00:00 (MST-7)
Location: MATTHIE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Wickenburg Police Department reported Vulture Mine Road at Sols Wash was closed due to flooding. The road was reported closed at 2005MST, but flooding impacts likely began around 1950MST based on radar and an upstream streamflow gage. The streamflow gage is roughly 2 miles upstream and measured 1.69 inches in 1 hour ending at 1900MST. Streamflow exceeded alarm stage at 1930MST. The gage peaked at 4.10 feet and 4815 cfs at 2010MST. Flow fell back below alarm stage at 2100MST.  No damages or injuries were reported.

Dust Storm in SOUTHEAST VALLEY/QUEEN CREEK, ARIZONA
From 02-SEP-22 17:57:00 to 02-SEP-22 18:17:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Near zero visibility reported near Elliot and South Meridian Roads in blowing dust from thunderstorm outflow. No accidents or injuries were reported.

Hail in PINAL, ARIZONA
From 02-SEP-22 17:45:00 to 02-SEP-22 17:45:00 (MST-7)
Location: QUEEN VLY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Lightning in PINAL, ARIZONA
From 02-SEP-22 22:42:00 to 02-SEP-22 22:42:00 (MST-7)
Location: BAPCHULE
Property damage: 1.50M
Crop damage: 0.00K
Reported by: Broadcast Media

Local media reported a home was struck by lightning near Hunt Highway and Peace Pipe Place. The home caught fire and was fully destroyed. No injuries were reported.

Flash Flood in LA PAZ, ARIZONA
From 02-SEP-22 21:30:00 to 02-SEP-22 23:30:00 (MST-7)
Location: QUARTZSITE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Flooding with water 3-4 feet deep was reported along US-95 about 14 miles south of Quartzsite. No damages or injuries were reported.

Dust Storm in SOUTHEAST VALLEY/QUEEN CREEK, ARIZONA
From 02-SEP-22 17:55:00 to 02-SEP-22 18:15:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Near zero visibility was reported along E Twin Acres Drive in Queen Creek in blowing dust from thunderstorm outflow. No accidents or injuries were reported.

Thunderstorm Wind in YUMA, ARIZONA
From 02-SEP-22 20:44:00 to 02-SEP-22 20:44:00 (MST-7)
Location: MARTINEZ LAKE
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A Yuma Proving Ground Station measured a 66 mph wind gust.

Thunderstorm Wind in MARICOPA, ARIZONA
From 02-SEP-22 19:30:00 to 02-SEP-22 19:30:00 (MST-7)
Location: LIBERTY
Magnitude: 52.00 EG
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Public

Social media pictures showed mobile home and metal shed destroyed in Rainbow Valley from damaging thunderstorm winds. Timing estimated from radar. No injuries were reported.

Thunderstorm Wind in MARICOPA, ARIZONA
From 02-SEP-22 18:10:00 to 02-SEP-22 18:10:00 (MST-7)
Location: QUEEN CREEK
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Multiple downed trees reported in the Villages of Queen Creek Subdivision. Wind speeds estimated around 60 mph. No injuries were reported.

Thunderstorm Wind in MARICOPA, ARIZONA
From 02-SEP-22 18:10:00 to 02-SEP-22 18:10:00 (MST-7)
Location: BOYS RANCH
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Report on social media of lost roof tiles from home and tree down near the area of South Meridian Road and East Pima Road. Winds were estimated at around 60 mph. Timing estimated from radar. No injuries were reported.

Dust Storm in NORTHWEST PINAL COUNTY, ARIZONA
From 02-SEP-22 18:38:00 to 02-SEP-22 18:58:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Visibility of 1/4 mile reported along the intersection of 1-10 with SR-387 in blowing dust from thunderstorm outflow. No accidents or injuries were reported.

Thunderstorm Wind in PINAL, ARIZONA
From 02-SEP-22 17:41:00 to 02-SEP-22 17:41:00 (MST-7)
Location: FLORENCE JCT
Magnitude: 56.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Utility Company

Downed powerlines leaving 2005 people without power was reported in the area between Apache Junction, Gold Canyon, and Queen Valley. A spotter said there were several wooden poles snapped or toppled along US-60. Another spotter in the Gold Canyon area also shared pictures of an aluminum carport/awning that was torn from a home. Winds were estimated to be between 60-70 mph. No injuries were reported.