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2h ago

Severe Thunderstorm Warning Hits L.A. County Overnight as NWS Flags Flash-Flood Dangers

NWS cautioned of 60 mph gusts plus torrential rain overnight, urging drivers to avoid flooded roads.

Los Angeles County was placed under a severe thunderstorm warning by the National Weather Service on Friday at 1:06 a.m. The warning is in effect until 1:45 a.m.
Los Angeles County was placed under a flood advisory by the National Weather Service on Thursday at 9:02 p.m. The advisory is in effect until Friday Nov. 21, at 3 a.m.

Overview

  • The National Weather Service issued a severe thunderstorm warning for Los Angeles County at 1:06 a.m., in effect until 1:45 a.m., covering Rancho Palos Verdes, Torrance and Rolling Hills.
  • Forecasters reported the storm moving northeast at 15 mph with potential damage to roofs, siding and trees, and advised vigilance for a possible tornado.
  • Torrential rainfall with the storm could trigger flash flooding, and officials repeated the guidance to never drive through water on roadways.
  • A separate flood advisory for Los Angeles County began at 9:02 p.m. Thursday and continued until 3 a.m. Friday, warning of urban and small-stream flooding with water over roadways and ponding.
  • Earlier Thursday, a flash flood warning covered Apple Valley, northern Lucerne Valley and Highway 247 near Barstow with 0.75 to 1 inch of rain per hour, while CalTrans and county fire departments provided road-closure updates and sandbag resources.