Heavy Duty Rain Prompts Flooding in Diamond Bar

Heavy rains and flooding in Southern California has prompted the National Weather Service to issue a flood advisory Friday.

The advisory should be canceled by 3 p.m., according to the NWS.

Just before 11 a.m., a line of scattered thunderstorms with heavy rain was moving through the west half of Los Angeles County at about 20 mph.

That line continued moving east through the early afternoon and into the San Gabriel Calley and eastern half of Los Angeles County, according to the NWS.

Rainfall of this intensity will produce widespread ponding of water on roadways and localized flooding of intersections and low-lying areas -- as well as increased runoff in streams.