Southwest flow aloft was present across south central Arizona on September 14th, but disturbances in the flow acted upon significant amounts of late summer monsoon moisture and produced isolated to scattered thunderstorms during the evening hours. Some of the storms affected the greater Phoenix metropolitan area, and the stronger storms generated gusty and damaging winds that were sufficient to blow down numerous trees as well as cause roof damage at Phoenix Sky Harbor International Airport. Wind gusts were measured to nearly 60 mph at both Scottsdale airport and Phoenix Sky Harbor airport. No injuries resulted from the damaging thunderstorm winds.

Thunderstorm Wind in MARICOPA, ARIZONA
From 14-SEP-15 19:38:00 to 14-SEP-15 19:38:00 (MST-7)
Location: SCOTTSDALE MUNI
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Scattered thunderstorms affected the greater Phoenix metropolitan area during the evening hours on September 14th, and some of them affected the community of Scottsdale. At 1938MST, the official ASOS weather station at Scottsdale airport measured a wind gust to 59 mph.

Thunderstorm Wind in MARICOPA, ARIZONA
From 14-SEP-15 19:00:00 to 14-SEP-15 19:10:00 (MST-7)
Location: (PHX)SKY HARBOR ARPT
Magnitude: 61.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: State Official

Scattered thunderstorms developed across the greater Phoenix metropolitan area during the evening hours on September 14th, and due to elevated upper level wind fields as well as moisture and instability values, the stronger storms produced gusty and damaging microburst winds which hit Phoenix Sky Harbor International Airport. At around 1900MST, gusty winds estimated to be as high as 70 mph damaged the roof at Terminal 2 near gate 11. The damage was reported by a state official. In addition, the winds blew debris upon the concourse between gate 11 and gate 17.

Thunderstorm Wind in MARICOPA, ARIZONA
From 14-SEP-15 19:20:00 to 14-SEP-15 19:25:00 (MST-7)
Location: PHOENIX
Magnitude: 52.00 EG
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Scattered thunderstorms developed across the greater Phoenix metropolitan area during the evening hours, and due to elevated moisture, instability and wind fields the stronger storms produced damaging outflow winds of at least 60 mph. Some of the winds produced damage in downtown Phoenix including the Arizona State Fairgrounds. According to a local broadcast media report, at 1925MST damaging winds blew down 7 power poles near 16th Street and Indian School Road, about 3 miles east of the fairgounds. Associated power lines then fell down and landed on a passing vehicle. Fortunately, no injuries were reported.

Thunderstorm Wind in MARICOPA, ARIZONA
From 14-SEP-15 19:40:00 to 14-SEP-15 19:40:00 (MST-7)
Location: SCOTTSDALE MUNI
Magnitude: 56.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorms developed across the northern portion of the greater Phoenix metropolitan area during the evening hours on September 14th, and some of the stronger storms generated gusty and damaging outflow winds in excess of 60 mph. According to a trained weather spotter located 3 miles south of the Desert Ridge Marketplace, gusty winds estimated to be nearly 65 mph blew down trees along Tatum Boulevard between Greenway and Cactus Roads. The trees had diameters of about 12 inches.

Thunderstorm Wind in MARICOPA, ARIZONA
From 14-SEP-15 19:20:00 to 14-SEP-15 19:30:00 (MST-7)
Location: PHOENIX
Magnitude: 56.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Scattered thunderstorms affected the greater Phoenix metropolitan area during the evening hours on September 14th, and due to elevated moisture, instability, and wind fields, some of the stronger storms produced gusty and damaging outflow winds in excess of 60 mph. According to a local broadcast media report, gusty winds estimated to be at least 65 mph blew down a large palm tree with a diameter of 2 feet. The palm tree then fell upon a parked car. No injuries were reported. The tree fell in central Phoenix near the intersection of Camelback Road and 16th Street. Additionally and at about the same time, a trained spotter 2 miles northeast of downtown Phoenix reported that gusty winds blew off an awning.