Oct 13, 2018
A strong Pacific upper level low pressure system moved into Arizona during the morning hours on October 13th and triggered the development of widespread moderate to heavy showers across the south-central deserts. The heavy rain resulted in numerous episodes of flash flooding during the day. Southerly flow ahead of the low advected in some tropical moisture being shed from Tropical Storm Sergio which recently passed by to the south of Arizona, and this infusion of tropical moisture helped to supp
Source: NOAA National Weather Service Storm Events Database (event 781636). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Pinal County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.