ANTHEM, Ariz. -- So how do we know more than 5 inches of rain fell in Anthem? Well, because of Jim Manley and a rain gauge, which is part of the Cocorah System.
That's a network of thousands of volunteers around the country that make daily weather observations.
So while rain was soaking streets outside, Manley could see his rain gauge filling up very quickly.
We noticed something interesting about his rain gauge. It only goes up to an inch. But since we got more than an inch of rain during that July storm, how does that work?
Manley told us that the inner tube measure 1/100ths of an inch up to 1 inch. And at that point, it spills over from the inner tube and starts filling the outer tube.
So all that rain ended up putting a lot of water in Manley's rain gauge. It was an observation confirmed by WeatherBug equipment at a nearby Anthem school.