Labor Day weekend weather expected to be seasonably warm in Southland

Heading into the long Labor Day weekend, forecasters are predicting seasonably warm temperatures over the next few days, with a slight chance of thunderstorms Friday afternoon in parts of Southern California.

But any storms will be nothing like Thursday’s, which pounded the San Gabriel, Antelope and Moreno valleys with heavy rain that caused some street flooding and lightning strikes that sparked a number of small fires.

During the mid-afternoon downpour, one rain gauge in the Aliso Canyon area of the San Gabriel Mountains measured 3 inches of rain in less than two hours, National Weather Service meteorologist Curt Kaplan said.

“That was a pretty good storm,” Kaplan said. “But any thunderstorms this afternoon will not affect the valleys and will move pretty quickly north and out of the area. We’re not expecting any flash flooding.”

Temperatures Friday through Monday will remain about where they’ve been, forecasters said, with a mixture of sunny and partly cloudy skies.

Overall, that means temperatures in downtown Los Angeles in the high 80s, in the mid- to upper-90s in the valleys and in the 70s at the beaches. 

The surf is expected to bring in wave sets as high as 10 feet to some Southern California beaches.

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-- Rebecca Trounson