Jan 20, 2021
A nearly stationary upper level low pressure system parked off the northern Baja California coast spread deep moisture northward and into Imperial County on January 20th. The deep moisture combined with modest instability to produce widespread light to moderate showers; isolated thunderstorms became embedded within the showers and they helped to increase rainfall rates across eastern portions of the county. The locally heavy rain resulted in a couple of episodes of flash flooding during the day
Source: NOAA National Weather Service Storm Events Database (event 931528). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Imperial County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.