Los Angeles County beaches from Zuma to Marina del Rey reopened Friday afternoon after a threat of lighting amid a powerful winter storm passed.

Los Angeles County Fire Department, Lifeguard Division tweeted about the closure at 10:13 a.m. as a winter storm was pounding the region with much-needed rain.

But by 2 p.m., the threat had subsided and the Los Angeles County Department of Beaches and Harbors officials tweeted that beaches were open again.

Officials worked with the National Weather Service in Los Angeles to monitor conditions and determined when beaches were safe to reopen, the tweet read.

A thunderstorm was detected about 17 miles west of El Segundo in the Santa Monica Bay at 9:30 a.m., the weather service said.

Beachgoers should be alert for potential dangerous lightning strikes across local beaches today, the agency tweeted before the beach closures.

At 10:42 a.m., the weather service reported a brief heavy downpour of 0.16 inches in 5 minutes in El Segundo.

The storm was expected to bring about 1.5 to 3.5 inches of rain to the Los Angeles and Ventura county valleys.

The Los Angeles County Public Health Department asked residents to avoid contact with ocean water amid storm drains, creeks and rivers through Monday amid the storm. Bacteria, debris and other hazards are washed away by the rain, officials warned.

Also on Friday, lifeguards shared images of snow and hail at El Porto in Manhattan Beach.

Well you dont see that everyday, a tweet read.

{BEACH LIGHTNING} Los Angeles County Beaches from Zuma to Marina Del Rey are closed due to the potential for beach lightning. We are working with @NWSLosAngeles to monitor the current weather and determine a time to safely reopen the beaches. https://t.co/vYLtzNVVx9

More rain and snow today, off and on showers through day. Isolated thunderstorms with small hail also expected. I-5 #Grapevine snow possible. All rain should be done by 4pm today. Drive safe today and watch out for flooded roads. #cawx #LArain pic.twitter.com/ZzKXsV41nR

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L.A. County beaches reopen after threat of lightning passes - KTLA Los Angeles