Update 10:50 p.m.: It was a wet day in Sierra Madre with a heavy storm bringing a flood advisory and thunder. According to the National Weather Service, 1.23 inches of rain fell in Sierra Madre over the last 24 hours.
Check out the National Weather Service's interactive map to see exactly how much rain fell across the region.
Heavy rain is soaking the region, and the National Weather Service has issued a flood advisory for Sierra Madre, Lake View Terrace, Monterey Park, downtown Los Angeles, Long Beach, Diamond Bar and southern Los Angeles County.
The flood advisory is in effect until 3:00 p.m. today. The city , and the mudflow forecast is currently "no phase," according to the Department of Public Works.
As of 11:00 a.m., a line of scattered thunderstorms and heavy rain was moving over west L.A. County at about 20 mph, according to NWS. It's expected to hit the San Gabriel Valley and eastern L.A. County at about 1:00 p.m., bringing heavy rain with it.
The rain rates were up to one half inch per hour in the Conejo Valley. Rain this intense could cause ponding of water on roadways, localized flooding in intersections and low lying areas, and stream run-off.
Drivers are encouraged to use extra caution on the road.