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Climate & Environment

Rare September rain is on the way to Southern California

A person sits with umbrellas while watching surfers at Venice Beach under gray skies.
Muggy conditions are headed our way again.
(
Ryan Sun
/
Associated Press
)

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Topline:

Much of Southern California could see a rare September rainstorm as the remnants of Tropical Storm Mario move into the area late Wednesday. The heaviest rain is expected to fall on Thursday and could cause debris flows in recently burned areas before things dry out by Saturday, according to the National Weather Service.

A heat wave first: Temperatures will climb into the low triple digits across inland areas of Southern California Tuesday and Wednesday. Expect the weather to get muggy. Before the rain arrives, there's a small chance of dry lightning — and thus fire starts.

Heat advisory: The National Weather Service issued a heat advisory for today until 7 p.m. in the San Fernando Valley, Santa Monica Mountains and the valleys of Ventura County.

Map with red, orange and yellow shading shows temperatures in Southern California.
A heat advisory is in effect Tuesday until 7 p.m. for parts of Southern California.
(
National Weather Service
)

More rain forecast: We could see similar weather between Sunday and Tuesday of next week due to more tropical moisture.

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