A trough of low pressure dropping into our region will interact with deep tropical moisture today bringing widespread rain and thunderstorm chances to Arizona.

There is a chance for heavy rain today and tomorrow, with a Flash Flood Watch in effect for much of the state, including the Valley, from 5 a.m. today until 11 a.m. tomorrow. This means flash flooding is possible.

Look for a high of 90 degrees today in the Valley. Rainfall totals could approach an inch or more in the Valley, with higher amounts north and east of town. Strong storms with large hail and damaging winds are possible this afternoon and evening, with rain and storm chances continuing into Tuesday as well. Today is also the first day of fall.

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