The rainstorm that swiped western Riverside County overnight flooded one road, prompting a closure, as well as triggered at least one rock slide on a state highway.
According to the county Transportation Department, downpours left standing water in the predawn hours along Leon Road in Winchester.
Officials said the roadway flooding, as well as muck and debris, led to closure of the two-lane corridor going north and south between Olive Avenue and Hill Drive, roughly a quarter-mile stretch.
The area received about a half-inch of rain Wednesday night into Thursday morning, according to the National Weather Service.
The California Highway Patrol said rocks rolled onto Highway 243 north of Idyllwild shortly after 6 a.m. Thursday following thunderstorms. Although there were traffic disruptions, the two-lane mountain corridor remained open.
The Idyllwild-Pine Cove area received nearly an inch of rain from Wednesday night to early Thursday morning, the NWS said.
No other significant road impacts were immediately reported.
The Weather Service said the Hemet-San Jacinto Valley received the greatest rainfall countywide overnight, recording about 1.2 inches.
The area around Riverside Municipal Airport recorded only a tenth of an inch, while virtually no rainfall occurred in the Coachella Valley.
The storm system is expected to completely exit to the northeast late Thursday night.