Following a week of summer-like heat, the Southland underwent a dramatic cool-down Tuesday, with some light rain and snow even falling in select areas.
Rain showers and isolated thunderstorms developed Tuesday, thanks to a cold low-pressure system that moved into the region from Northern California, according to the National Weather Service.
By mid-afternoon, light snow was already being reported along the Grapevine, dramatically slowing traffic in the northern reaches of Los Angeles County.
Snow was reported as low as 2,600 feet at Lake Los Angeles in the Antelope Valley, the weather service reported.
By late afternoon, about an inch of hail was reported in the Pasadena area, with more hail and rain falling in La Canada Flintridge. A band of strong rain showers moved through El Monte and Whittier, moving to the southeast.
A winter weather advisory was extend to 3 a.m. Wednesday for the Los Angeles County Mountains, excluding the Santa Monica range, with light snow expected and total snow accumulations of two to five inches above 5,000 feet. The highest amounts expected in the eastern San Gabriels, according to the weather service.
Drivers should plan on slippery road conditions and potential travel delays. Gusty winds could affect travel on Interstate 5 and the Antelope Valley (14) Freeway, especially for high profile vehicles, according to the weather service.
The low-pressure system will move out of the area by Wednesday, with warmer and drier conditions on tap for Thursday, according to the weather service.