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A flood watch is in effect for the Phoenix area due to a 70% chance of storms.

An unseasonably strong low-pressure system is bringing moisture and instability to Arizona.

Storm chances will continue into the weekend, with cooler-than-normal temperatures expected.

The monsoon is going out with a bang, as storm chances in Phoenix have jumped to 70% on Friday, Sept. 26, triggering a flood watch for most of the metro area.

The National Weather Service is forecasting localized heavy rainfall and the potential for flash flooding, damaging winds, hail and blowing dust. The flood watch runs from 8 a.m. to 11 p.m. on Sept. 26, covering Phoenix and surrounding areas where storms could unleash downpours, flooding washes and low-water crossings.

An unseasonably strong low-pre

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