Isolated to scattered thunderstorms developed across the central deserts during the afternoon and evening hours on September 1 and some of them impacted the greater Phoenix metropolitan area. For the most part wind speeds stayed below 60 mph however winds were strong enough to cause damage. Utility companies reported power lines blown down by strong wind in Mesa and Scottsdale. Several reports were received regarding large trees as well as large branches downed by the outflow winds. At about 1700MST a dust storm was reported at Phoenix Mesa-Gateway airport as visibility was measured down to just one eighth of a mile. No injuries were reported due to strong winds or falling trees.

Thunderstorm Wind in MARICOPA, ARIZONA
From 01-SEP-19 17:02:00 to 01-SEP-19 17:09:00 (MST-7)
Location: MESA
Magnitude: 48.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Utility Company

Isolated to scattered thunderstorms developed across the eastern portions of the greater Phoenix metropolitan area during the afternoon hours on September 1. Some of the stronger storms generated gusty and damaging outflow winds that affected communities such as Mesa and Scottsdale. According to a local utility company, at 1702MST gusty winds estimated to be at least 55 mph downed power lines about 1 mile northwest of Mesa. Shortly thereafter, at 1709MST power lines were reported to be blown down 1 miles southeast of Scottsdale. There were no injuries reported due to the downed power lines.

Thunderstorm Wind in MARICOPA, ARIZONA
From 01-SEP-19 17:10:00 to 01-SEP-19 17:10:00 (MST-7)
Location: PAPAGO AAF ARPT
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Isolated to scattered thunderstorms developed across northeast portions of the greater Phoenix metropolitan area during the afternoon hours on September 1. Gusty outflow winds from the stronger storms led to some damage in the community of Scottsdale. According to a report from local broadcast media, at 1710MST gusty winds estimated up to 60 mph knocked over a large tree onto Camelback Road near 54th Street. The diameter of the tree was estimated at 2 feet. No injuries were reported due to the downed tree.

Dust Storm in SOUTHEAST VALLEY/QUEEN CREEK, ARIZONA
From 01-SEP-19 16:45:00 to 01-SEP-19 18:15:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Isolated to scattered thunderstorms developed across the southeast portions of the greater Phoenix metropolitan area during the afternoon hours on September 1. Some of the stronger storms generated gusty outflow winds reaching or even exceeding 50 mph. The gusty winds stirred up significant amounts of dust which resulted in a dust storm that impacted Phoenix Mesa-Gateway airport. According to the official AWOS weather station at the airport, at 1655MST visibility lowered to one eighth of a mile in a dust storm. Shortly thereafter a Dust Storm Warning was issued at 1708MST, and at 1710MST a wind gust to 52 mph was reported. No accidents were reported due to the sharply reduced visibility.

Thunderstorm Wind in MARICOPA, ARIZONA
From 01-SEP-19 17:20:00 to 01-SEP-19 17:20:00 (MST-7)
Location: SUNNYSLOPE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorms developed across the northern and central portions of the greater Phoenix area, including the community of Glendale, during the afternoon hours on September 1. Some of the storms produced gusty damaging outflow winds estimated to be up to 60 mph in strength. According to a report from the public, at 1720MST large tree limbs up to 16 inches in diameter were snapped near 7th Avenue and Northern Avenue, about 6 miles east of Glendale. Gusty thunderstorm outflow winds estimated at 60 mph downed the branches.

Thunderstorm Wind in MARICOPA, ARIZONA
From 01-SEP-19 17:00:00 to 01-SEP-19 17:00:00 (MST-7)
Location: TWIN KNOLLS
Magnitude: 48.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: NWS Employee

Isolated to scattered thunderstorms developed across the eastern portions of the greater Phoenix area during the afternoon hours on September 1. Some of the stronger storms produced gusty and damaging winds in the Mesa and East Mesa communities. According to a National Weather Service employee located about 3 miles east of East Mesa, at 1700MST gusty winds estimated to be at least 55 mph blew down a Palo Verde tree with a diameter of 18 inches. The tree was about 25 feet tall. The tree was downed just northeast of the intersection of East Main Street and Ellsworth Drive. No injuries were reported.