Nov 20, 2019
Deep moisture, some of it tropical in nature, interacted with a pair of upper level low pressure systems and led to the development of widespread rain and isolated thunderstorms across south-central Arizona during the evening hours on the 20th. Some of the heaviest rain, with measured storm total rainfall amounts generally around 2-4 inches, occurred over higher terrain east of Phoenix including the Woodbury burn scar. Banding and training of storms led to higher rainfall amounts in a shorter pe
Source: NOAA National Weather Service Storm Events Database (event 859862). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Maricopa County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.