Dec 22, 2023
A potent upper-level low pressure system situated across southern California transported a plume of deep subtropical moisture across the Desert Southwest, with PWAT values peaking as high as 1-1.2 across portions of southern Arizona. PWATs this high in late December is near the 99th percentile of climatology. The anonymously high moisture content in combination with the strong dynamics associated with the low pressure system itself resulted in the development of widespread rainfall activity acro
Source: NOAA National Weather Service Storm Events Database (event 1153341). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Yuma County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.