Quoting from the news link:
In the matter of just 7 hours, 3.30 inches of rain fell at Phoenix Sky Harbor airport (the normal monsoon season total rainfall is only 2.71 inches) which set the all-time calendar day rainfall record. Other locations around the Phoenix metro received 5 to 6 inches of rain which led to the closure of numerous streets and major interstates. Clearly, the morning of Sept 8th will be remembered for years to come as one of the largest monsoon season rainfall events in the history of the city.
So, the city of Phoenix receives more than 3 month’s worth of average rainfall in under 7 hours, how do you end the month of September? How about another severe thunderstorm and flooding event
Unusually heavy rainfall bring many problems. However, if it partially alleviates an ongoing drought, perhaps there is a silver lining to the dark clouds.