The pattern for July was very strong and provided much needed, always needed, rain to most of Arizona. There were still some dry spots, but otherwise, July was wet. The middle of the US was not so lucky and is suffering an intense and extended drought.
Very intense high pressure has dominated the middle of the country. In the Northern Hemisphere, high pressure systems have a clockwise flow. This strong high pressure has ensured a constant flow of moisture from the tropics into Arizona. This wet pattern is now projected to continue into the fall.
Here is an animated gif from the Climate Prediction Center showing the precipitation outlook for the 6-10 day, 8-14 day, 1 month and 3 month periods. Notice in the fall, a slight shift to the southwest occurs. I think this is probably due to the mild El Nino effect. This is not a strong El Nino and may not have a large, lasting effect. Currently, we are in a lull with much less storm activity since the heavy storms on Tuesday evening. This shouldn't last and we will have more rain on the way.
On a separate note, my weather station software is not interfacing with my WMR200 very nicely. I may need to shift to a new software. Messing with the weather station has used up my free time and limited my time for the blog. Hopefully, I will get it resolved soon.