A series of strong thunderstorms produced damaging microburst winds over portions of south central Arizona, including the greater Phoenix area, on August 24th. Strong winds caused damage to buildings, trees, and power poles.

Hail in MARICOPA, ARIZONA
From 24-AUG-10 18:55:00 to 24-AUG-10 19:00:00 (MST-7)
Location: SENTINEL
Magnitude: 1.50 
Crop damage: 0.00K
Reported by: Newspaper

Yuma Daily Sun reported that motorists on Interstate 8 had hail damage to windows. The size and time of the apparent microburst were estimated. One woman had a minor injury due to the glass that blew in.

Thunderstorm Wind in PINAL, ARIZONA
From 24-AUG-10 18:45:00 to 24-AUG-10 19:00:00 (MST-7)
Location: COOLIDGE
Magnitude: 60.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained weather spotter reported numerous power poles downed in the town of Coolidge. Thunderstorm downburst winds were estimated to be in excess of 60kt.

Thunderstorm Wind in MARICOPA, ARIZONA
From 24-AUG-10 16:30:00 to 24-AUG-10 17:00:00 (MST-7)
Location: PHOENIX DEER VLY ARP
Magnitude: 70.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Damaging thunderstorm microburst winds, estimated to be in excess of 70kt, caused damage to portions of the Mayo Clinic Hospital.

Thunderstorm Wind in MARICOPA, ARIZONA
From 24-AUG-10 16:45:00 to 24-AUG-10 17:00:00 (MST-7)
Location: SCOTTSDALE MUNI
Magnitude: 50.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Strong thunderstorms over Scottsdale generated microburst winds which toppled several power poles. Winds were estimated in excess of 50kt.

Thunderstorm Wind in PINAL, ARIZONA
From 24-AUG-10 17:50:00 to 24-AUG-10 18:00:00 (MST-7)
Location: BON
Magnitude: 50.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported several power poles downed about 14 miles west of Casa Grande. The strong thunderstorm microburst winds that downed the poles also generated dense blowing dust, lowering visibility to one quarter mile.

Thunderstorm Wind in YUMA, ARIZONA
From 24-AUG-10 18:10:00 to 24-AUG-10 18:20:00 (MST-7)
Location: AZTEC
Magnitude: 60.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

A trained weather spotter reported that 2 semi-trucks were blown off of Interstate 8 about 6 miles west of Sentinel. The strong thunderstorm downburst winds were estimated to be in excess of 60 knots.

Thunderstorm Wind in MARICOPA, ARIZONA
From 24-AUG-10 17:10:00 to 24-AUG-10 17:30:00 (MST-7)
Location: MORRISTOWN
Magnitude: 50.00 EG
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Utility Company

APS, reported that power poles, and power lines, were downed near highway 60, approximately one mile east of highway 74 in the town of Morristown. Downburst winds were estimated to be in excess of 50kt.

Thunderstorm Wind in MARICOPA, ARIZONA
From 24-AUG-10 17:50:00 to 24-AUG-10 18:10:00 (MST-7)
Location: BUCKHORN
Magnitude: 65.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Strong microburst winds blew the roof off of a mobile home in Mesa, near the intersection of University and Lindsey roads.

Thunderstorm Wind in MARICOPA, ARIZONA
From 24-AUG-10 18:15:00 to 24-AUG-10 19:00:00 (MST-7)
Location: EL MIRAGE
Magnitude: 75.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported multiple trees down along with extensive wind damage west of El Mirage, in the area between Greenway Road and Thunderbird, and 131st Avenue and Litchfield. In addition to trees blown over, limbs 6 inches in diameter and larger were blown off of trees. The damage was a result of microburst winds estimated to be in excess of 75kt. Emergency crews were reported to be in the area.

Thunderstorm Wind in MARICOPA, ARIZONA
From 24-AUG-10 16:44:00 to 24-AUG-10 17:00:00 (MST-7)
Location: SCOTTSDALE MUNI
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong thunderstorm winds caused steel gates to be blown down; in addition there were reports of tree limbs 6 inches in diameter broken off and lying in the streets.