A favorable position of the Monsoon high pressure system and increasing moisture resulted in a second consecutive day of strong to severe thunderstorms across much of southern Arizona.

Hail in SANTA CRUZ, ARIZONA
From 05-JUL-11 13:10:00 to 05-JUL-11 13:15:00 (MST-7)
Location: (OLS) NOGALES INTL ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported one inch diameter hail covering the ground with hail depths up to 2 inches in spots.

Thunderstorm Wind in PIMA, ARIZONA
From 05-JUL-11 16:15:00 to 05-JUL-11 16:20:00 (MST-7)
Location: SELLS
Magnitude: 50.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Tohono O'odham Emergency Manager reported structural damage to two homes in Sells with estimated winds near 50 knots (58 mph). The homes both suffered partial roof collapses.

Flash Flood in PIMA, ARIZONA
From 05-JUL-11 17:00:00 to 05-JUL-11 18:00:00 (MST-7)
Location: JAYNES
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Widespread rainfall amounts across the Tucson Metro area ranged from one half to three quarters of an inch with some spots receiving up to two inches. Several washes were running with some spilling over into local streets. This resulted in several streets being closed. There were also a stalled car on East Irvington at the Rodeo Wash near the Tucson International Airport. The driver was able to safely seek higher ground.

Thunderstorm Wind in PIMA, ARIZONA
From 05-JUL-11 16:58:00 to 05-JUL-11 17:30:00 (MST-7)
Location: VAIL
Magnitude: 67.00 MG
Property damage: 750.00K
Crop damage: 0.00K
Reported by: ASOS

Strong thunderstorm winds resulted in significant damage around southern portions of the Tucson Metro area. Davis-Monthan Air Force Base recorded a wind gust of 67 knots (77mph) while the Tucson International Airport recorded a gust of 61 knots (70 mph). The most significant damage was sustained by businesses in South Tucson. Near Ajo Way and County Club, two industrial buildings sustained partial roof collapses with one business losing the entire roof. A Safeway Grocery Store in the Rita Ranch Village suffered a partial roof collapse. Several power poles and power lines were also downed with several blown transformers. Around 27,000 residents were without power at the peak of the storm. Several trees were downed, with trees falling on homes, cars, and into traffic creating road closures. The most significant tree damage was at the McGuire Hills Apartment Complex. Several trees were downed blocking access to many of the apartments.

Thunderstorm Wind in PIMA, ARIZONA
From 05-JUL-11 17:40:00 to 05-JUL-11 18:15:00 (MST-7)
Location: JAYNES
Magnitude: 56.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A strong line of thunderstorms continued to track to the northwest across the Tucson area resulting in more significant wind damage. Several trees were downed along a line from River Road and Interstate 10 to the Gladden Farms neighborhood. In Gladden Farms, aside from trees downed, a twenty foot section of a brick wall was blown down. Additional damage was observed in Oro Valley with several trees down and outbuildings blown apart.

Thunderstorm Wind in PIMA, ARIZONA
From 05-JUL-11 18:30:00 to 05-JUL-11 18:45:00 (MST-7)
Location: MT LEMMON
Magnitude: 56.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter in Saddlebrooke reported significant thunderstorm wind damage. Several large, established trees were downed causing minor roof damage, and brick walls blown down. In Avra Valley, mesquite trees were snapped at the base while large limbs were broke off others.

Thunderstorm Wind in PIMA, ARIZONA
From 05-JUL-11 17:35:00 to 05-JUL-11 18:10:00 (MST-7)
Location: SWEETWATER
Magnitude: 50.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Tohono O'odham Nation Emergency Manager reported thunderstorm winds caused structural damage to two homes in Lukeville. One home suffered minor roof damage while the other home suffered a partial roof collapse. Another home was damaged in the Gu Vo District of the Tohono O'odham. The home had damage to the roof and walls.