India, Aug. 7 -- A powerful lightning storm lit up the skies over parts of San Diego County late Thursday, as the National Weather Service (NWS) issued a severe thunderstorm warning. Videos circulating on social media showed repeated lightning flashes illuminating the night sky.

According to NWS, Doppler radar detected a strong thunderstorm at 10:36 pm PDT (1:36 am ET) near Interstate 8 between Boulevard and the Imperial County line. The storm was moving west at around 20 mph.

A 43-minute uncut video shot from Shelter Island shows the sky lighting up in intervals.

The NWS warned that the strongest storms could produce marble-sized hail measuring up to 0.5 inches and wind gusts reaching 50 mph. The weather service has urged residents ou...