( CNN ) -- Torrential rainfall unleashed flooding and spawned a rare tornado warning in California on Tuesday as a series of storms moved through , with more expected Wednesday and Thursday . Weather-related problems also affected Northern California , where Fresno 's Yosemite International Airport lost the ability to send passengers through security because of a power outage . Landings and takeoffs were not affected , because a backup system kicked in , said Vikkie Calderon , airport spokeswoman . However , the backup system for the lobby did not kick in . Airlines were remotely checking passengers in Tuesday afternoon , but the outage prevented security screenings until power was restored , Calderon said . By midafternoon , security screenings had resumed . In Southern California , a possible tornado was reported in Huntington Beach by the Orange County emergency manager , the National Weather Service reported . Boats in the nearby harbor and some buildings in the area were damaged , and a vehicle was flipped . As of Tuesday afternoon , about 50 people were in the process of being evacuated from homes in the San Pedro area of Los Angeles because of severe flooding , according to Los Angeles Police Department Officer Gregory Baek . About 20 vehicle rescues took place in the same area , he said . Video from CNN affiliate KCAL showed flooding in Long Beach , where a boater was using a raft to navigate flooded streets lined by cars with water up over their headlights . Watch and read KCAL 's reports . A rare tornado warning was issued Tuesday afternoon for southeastern Orange County , including the cities of Mission Viejo and San Clemente , and northwestern San Diego County , including the cities of Oceanside and Carlsbad . The National Weather Service said radar indicated a severe thunderstorm capable of producing a tornado . A 93 mph wind gust was reported by lifeguards at the Newport Beach pier , the weather service said . Gusts of 72 mph and 73 mph were also measured . Are you there ? Send us your stories and images . Piers in Orange County were closed because of high surf , according to the Orange County Fire Authority . There were some reports of damage and flooding , but no known injuries , officials said . Forecasters warned the rainfall could trigger slides in recent burn areas and also warned about damaging winds . Some areas received as much as 3 inches of rain on Monday and could see an additional 2 inches Tuesday , the weather service said . Even stronger storms , with heavy rain and powerful winds , are forecast to hit the region Wednesday and Thursday . Wind and rain prompted power outages Monday in Southern California , according to Southern California Edison . CNN 's Sara Pratley , Chad Myers , Rosalina Nieves and Lynn Lamanivong contributed to this report .
Warning issued for southeastern Orange County , northwestern San Bernardino County . Fresno 's Yosemite International Airport suffers power outage . 50 people evacuated because of Los Angeles flooding .