SCOTTSDALE (3TV/CBS 5) - A powerful monsoon storm hit parts of the Valley hard Thursday night, bringing heavy rain and lots of lightning to Phoenix and Scottsdale. Many folks got emergency weather alerts on their phones, warning of the hazards. "This is a dangerous and life threatening situation," read the alert.

We saw evidence of that danger as ADOT cameras captured video of cars literally being washed away on the flooded I-17 at Greenway Road. 

A Flash Flood Warning was issued for Phoenix, Scottsdale and Paradise Valley until 2 a.m. A tweet from the National Weather Service said" "VERY intense rain is falling over central Scottsdale. A rain gage measured 1/2" of rain in just ten minutes." They also advised drivers to use extreme caution if traveling.

Some delays were reported as rain pounded Sky Harbor Airport. We talked to passenger Conor O'Lowney, who was stuck on a plane at the gate, waiting to get off. He had just flown in from Atlanta , but said the plane had been sitting on the tarmac for about an hour.

Thousands of people were left without power during the storms, including close to 2,000 customers in north Phoenix. You can check for outages on the SRP and APS outage maps.

Viewers shared dozens of pictures and videos of the rain and lightning by email and on our Arizona's Weather Authority Facebook page.


We got reports of damage all around town, including trees down in south Scottsdale. Several accidents were also reported, as the rain led to slick roads and hazardous driving conditions. 

More heavy rain is expected over the next several days in eastern and southeast Arizona. Some of the higher elevations could see up to 5” of rain. A flash flood watch will continue for most of Arizona through Saturday night. 

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