Dust storm sweeps across southern AZ - WDAM - TV 7 - News, Weather and Sports

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Dust storm sweeps across southern AZ

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Dust storm develops in Pima County. (Source: CBS 5 News) Dust storm develops in Pima County. (Source: CBS 5 News)
(Source: CBS 5 News) (Source: CBS 5 News)
(Source: CBS 5 News) (Source: CBS 5 News)
Aerials of the dust storm from our news helicopter as the video is being fed into the newsroom. (Source: CBS 5 News) Aerials of the dust storm from our news helicopter as the video is being fed into the newsroom. (Source: CBS 5 News)
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TUCSON, AZ (CBS5) -

The first significant dust storm of the 2013 summer season moved up from southern Arizona Wednesday afternoon but fell apart before hitting the Phoenix metro area.  

Pinal and southwest Maricopa counties were under a dust storm warning that expired at 7 p.m.

The storm with gusty thunderstorms formed in Pima County Wednesday afternoon. By 5 p.m., the storm was sending dust into Pinal County.

Storms developed south of Casa Grande and began moving northwest closer to the Phoenix area, said CBS 5 chief meteorologist Chris Dunn.

Just after 5 p.m., the storm was estimated to be about 12 miles south of Casa Grande and heading toward Chandler.

The storm warning included the communities of Casa Grande, Coolidge, Florence, Gila Bend, Maricopa and Sacaton.

The warning also covered the nearby portions of Interstates 8 and 10.

The developing weather marked the first significant surge of activity of our summer thunderstorm season.

Hopes were high it would bring the potential of the first significant rain for the Valley in three months. It has been 93 days since there's been any measurable rain at Sky Harbor International Airport, Dunn said. 

Stay with cbs5az.com and CBS 5 News for updates on this developing story.

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