(KRON) — Shower activity, lightning strikes and isolated thunderstorms are being seen across the Bay Area Wednesday, according to a tweet from the National Weather Service Bay Area. NWS labeled the lightning risk as moderate in the North Bay, South Bay, East Bay and San Francisco.

KRON4 Meteorologist Lawrence Karnow said that the chance for thunderstorms began around 5:00 a.m. on Wednesday and will last until about 3:00 p.m. Lightning strikes with light showers are dangerous because they can start fires.

In August 2020, lightning strikes started more than 370 wildfires across the state. More than 10,000 firefighters were battling 23 major fire complexes at one point in the state. Three of the major fires were in the Bay Area.

While the situation does not appear to be as dire as it was in 2020, Karnow said tropical moisture is beginning to creep closer towards the Bay Area. For more detail, watch Karnow’s full report using the video player above.

“We’re seeing some of the stronger cells still producing lightning,” read the NWS Bay Area tweet. “So, if you’re going out for the lunch hour be ready for a shower or isolated thunderstorm.”