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The unusual weather system in July will bring opportunities for dry lightning and scattered showers to parts of Southern California this weekend, the National Weather Service said.
Early monsoon moisture brought showers and storms across Orange County and the Inland Empire, where the system was expected to move to Los Angeles and Ventura counties late Thursday through Friday afternoon, according to the National Weather Service. Once the rain comes into character, it could be on top of San Gabriel Mountains, Foothills and Antelope Valley.
Meteorologist Joe Schillard, along with the Oxnard office of the Meteorological Bureau, said these storms could potentially wildfires.
“It could be dry lightning,” Syrad said. “Sometimes you might get a lightning rain shaft, but you could get lightning bolts and attack outside the rain shaft.”
Depending on the rain pockets and the intensity of the thunderstorm, weather services warned that there is a slight chance of localized flooding and strong winds that could accompany the lighting.
“We’re going to pay attention to things,” Syrad said. “If people hear thunder, it’s best to stay indoors or in a car. … Lightning is very fatal.”
Silard said the unusual thunderstorm-driven condition is not the typical summer monsoon pattern where moisture flows from the southwest to Southern California. Rather, it is fueled by low-pressure systems in northern Mexico, producing similar results.
“Every summer, where you get moisture at mid-levels in the atmosphere, there are several mechanisms to destabilize the atmosphere… [there’s a] There’s a slight chance of a shower and a thunderstorm,” Syrad said.
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