Aug 3, 2017
Scattered monsoon thunderstorms developed across portions of eastern Riverside County, including Joshua Tree National Park, during the early afternoon hours on August 3rd. Some of the stronger storms produced locally heavy rain with peak rain rates between one and two inches per hour. The intense rainfall led to an episode of flash flooding across the southern portion of the park; park officials indicated that the south entrance of the park was temporarily closed during the afternoon due to the
Source: NOAA National Weather Service Storm Events Database (event 714552). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Riverside County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.