PHOENIX — Monsoon storms are making a big comeback this week, and Wednesday could bring heavy rain and flash flooding to the Valley!
A surge of Gulf moisture is moving back into Arizona today. A storm system to our north will give that moisture a lift, setting the stage for two days of rain and storms.
Storms will build over the high country this afternoon. Here in the Valley, there's a 40 percent chance of storms late this afternoon and evening, with chances going up after midnight. A strong storm or two could produce damaging winds.
Wednesday is the peak of this event, and it's now an ABC15 Weather Action Day. A Flood Watch is in effect from midnight tonight through 11 p.m. Wednesday for the Phoenix metro and much of southern Arizona, including Tucson, Casa Grande, Globe, and Safford.
A separate Flood Watch covers northern Arizona, including Flagstaff, Prescott, Sedona, Payson, and Show Low, from midnight tonight through 5 a.m. Thursday.
Widespread showers and scattered storms are likely from sunrise to sunset, with a 50 percent chance in the Valley. Rain could fall at 1 to 2 inches per hour at times, especially during the morning commute.
The Valley could pick up a half inch to an inch of rain. The higher terrain north and east of Phoenix could see 1 to 1.5 inches, with isolated spots near 2 inches.
Watch out for flooded roads and washes, and never drive through flooded roadways.
Storms wind down Wednesday night. A few leftover storms are possible Thursday, mainly over the eastern high country, with a 30 percent chance in the Valley.
This round of rain could help put a dent in our rainfall deficit. In Phoenix, we are a little more than three-quarters of an inch below normal for this point in the monsoon.
The monsoon season officially runs until September 30th.
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