A localized downpour hits an area of Tucson north of downtown. Several small but intense cells dropped rain and brought high winds to the area during the first monsoon storm of the season Thursday.
A monsoon storm cell brings rain to Tucson's southside, seen here at Super Carniceria y Pescaderia "El Ranchito" near 6th Avenue and Bilby Road on July 5 2018, in Tucson, Ariz.
Mike Livermore lowers his two-year-old grandson Michael Baker for a brief cooling-off in the stream near the Reid Park pond on July 5 2018, in Tucson, Ariz. Record-breaking hot weather finally subsided with the arrival of monsoon storms.
Two men carry on their conversation under a ramada as a monsoon cell opens up around them near 6th Avenue and Bilby Road on July 5 2018, in Tucson, Ariz.
A worker from Ashton Contracting and Tucson Dept. of Transportation worker examine a large light sculpture that fell onto the southbound lanes of the Kino Overpass at 22nd Street during monsoon activity on July 5, 2018.
A localized downpour hits an area of Tucson north of downtown. Several small but intense cells dropped rain and brought high winds to the area during the first monsoon storm of the season Thursday.
Kelly Presnell / Arizona Daily Star
Motorists encountered the seasonβs first monsoon rainfall near South Nogales Highway and West Los Reales Road on Tucsonβs south side Thursday.
Mike Christy / Arizona Daily Star
A monsoon storm cell brings rain to Tucson's southside, seen here at Super Carniceria y Pescaderia "El Ranchito" near 6th Avenue and Bilby Road on July 5 2018, in Tucson, Ariz.
Mike Christy / Arizona Daily Star
Mike Livermore lowers his two-year-old grandson Michael Baker for a brief cooling-off in the stream near the Reid Park pond on July 5 2018, in Tucson, Ariz. Record-breaking hot weather finally subsided with the arrival of monsoon storms.
Mike Christy / Arizona Daily Star
A man sprints through monsoon rainfall on Park Ave. near Irvington Road on July 5, 2018.
Rick Wiley / Arizona Daily Star
Two men carry on their conversation under a ramada as a monsoon cell opens up around them near 6th Avenue and Bilby Road on July 5 2018, in Tucson, Ariz.
Mike Christy / Arizona Daily Star
A worker from Ashton Contracting and Tucson Dept. of Transportation worker examine a large light sculpture that fell onto the southbound lanes of the Kino Overpass at 22nd Street during monsoon activity on July 5, 2018.
Rick Wiley / Arizona Daily Star
A monsoon storm cell drops rain somewhere in Tucson as seen from near 36th St. and Kino Parkway on July 5, 2018.
Storm cells arrived in the Tucson area Thursday afternoon, bringing strong winds and slight rains after the day began with warnings of excessive heat.
The strong winds caused a large metal column at the 22nd Street and Kino Parkway overpass to fall into the street, closing both southbound lanes of travel shortly before 4 p.m. There were no reported injuries.
City staffers said a microburst caused the art structure to rip away from its welded areas and topple onto the road. Road crews cleared the column from the street and reopened the traffic lanes around 6 p.m.
The structure might not be salvageable, city officials said. Similar decorative columns along the overpass are not believed to pose safety hazards to drivers, they said.
Dust storms also closed roads due to low visibility, including a portion of Interstate 10 near Picacho Peak that shut down for nearly 40 minutes in the evening.
Before the storm, Thursdayβs temperatures peaked at 111 degrees around 2:45 p.m., the cityβs hottest day of the year so far, according to the weather service.
Tucson Electric Power reported more than 4,000 customers were without power during the peak temperatures in several parts of Tucson and Oro Valley. Power was restored in about 90 minutes.
Officially, .13 inch of rain fell at the airport. It was Tucsonβs first recorded rainfall since June 16.
More thunderstorms are expected to arrive this weekend, bringing increased chances of rain heading into next week.
Rain isnβt in the forecast for Friday, but chances of rain reach 20 percent on Saturday and 40 percent for late Sunday.
But Tucsonans should also expect the triple-digit heat to continue, with temperatures expected to reach 104 degrees Friday, 105 Saturday and 102 on Sunday.
Photos: Monsoon 2018 and other rainstorms in Tucson