Light rain continued to fall over parts of the Southland Monday, one day after a steady downpour from Hurricane Marie, but the region is in for a sharp change in the weather later as a week of blistering heat begins.
Temperatures are expected to climb into the upper 80s and 90s in most inland areas of Los Angeles County on Monday’s Labor Day holiday, with peak heat arriving Tuesday through Thursday and sending the mercury soaring into the upper 90s and triple digits in some areas.
“By Tuesday expect lots of areas of moderate to major heat risk for the coasts and coastal valleys, in particularly the LA Basin,” the National Weather Service said Sunday. “Temperatures are expected to peak on Wednesday, with widespread major heat risk and highs largely 90 to 105 degrees.”
Overnight lows will offer no relief either, remaining in the 70s and even the upper 70s Tuesday and Wednesday night.
Isolated showers will continue in some areas through Tuesday amid the heat.
Marie remained well offshore but sent considerable moisture toward the area on Sunday, with flooding reported at parking lots in Seal Beach and Zuma Beach, and “flowing into homes and streets” in Long Beach, according to the NWS.
The following rainfall records were broken Sunday in Los Angeles County:
— The total of .70 inches in downtown Los Angeles broke the record of .17 inches set on Sept. 6, 1965.
— The total of .59 inches at LAX broke the record of .02 inches set on Sept. 6, 1965.
— The total of 1.3 inches at Hollywood Burbank Airport broke the record of .82 inches set on Sept. 6, 1976.
— The total of .68 inches at Long Beach Airport broke the record of .12 inches set on Sept. 6. 1971.
— The total of .32 inches in Lancaster broke the record of .12 inches set on Sept. 6, 1971.
The Los Angeles County Department of Public Health issued an ocean water quality rain advisory for all LA County beaches until at least 2 p.m. Wednesday. Beach users were cautioned to avoid water contact for at least 72 hours after rainfall.
Officials had already urged inexperienced swimmers to stay out of the water due to the rip currents.
A high surf advisory and coastal flood advisory will be in effect until 11 p.m. Tuesday for portions of the Los Angeles County and Orange County coasts.
Large breaking waves of 6 to 10 feet for south and southwestern-facing beaches and 4 to 7 feet for west-facing beaches are expected, with strong and dangerous rip and longshore currents.
“With huge crowds expected at the beaches for the Labor Day holiday, the emphasis for these statements is to alert the public to be extra careful in and near the ocean,” according to the NWS.
High tides will also increase through early in the week and were expected to exceed 7 feet by Monday. The combination of elevated tides and the south swell will create a moderate risk of coastal flooding in some areas.
Marie is forecast to track northwest while remaining well off the California coast.