National Weather Service United States Department of Commerce
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Last Map Update: Sat, Oct 31, 2026 at 1:02:35 pm MST

A Flood Watch will be in effect for much of AZ Sunday, including Maricopa County, Northwest Pinal County, and Southern Gila County. Widespread light to moderate showers will overspread the area tonight through Sunday. Isolated thunderstorms may develop as well and lead to higher rain-rates and areas of flash flooding. The long duration rainfall with rainfall in excess of 1 inch in many areas will also lead to slower response flooding in washes, creeks, streams, and rivers.
A longer duration and widespread rain event is expected Saturday night through Sunday, with moderate to at times heavy rain. Although the thunderstorm potential will be low, there could be some embedded convection and lightning during this event. Rainfall will be most persistent over southwest-facing slopes and higher terrain areas, which could receive upwards of 2"-4"+ over 24-36 hours. Rises in area washes, creeks, streams, and rivers can be expected at a minimum.
There is a high chance (60-99%) that much of southcentral AZ will receive >0.50"-1.00" tonight through Sunday. There is even around a 50-90% chance that some areas NE of Phoenix could receive 3.00"+.

 

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