The strong air currents out of the northeast -- blowing consistently at speeds of 25-35 mph, with gusts hitting at least 60 mph at times -- were expected to prevail through the day, according to the National Weather Service.
At Lindbergh Field, the buffeting winds caused no flight delays or cancellations, though they did force planes to land out of the west, instead of on the normal easterly approach, airport spokeswoman Katie Jones said.
CHP Officer Ray Scheidnes warned drivers of high-profile vehicles to slow down and avoid mountain areas.
"We had a big rig get blown over there kind of in the Pine Valley area on Interstate-8. There was also a eucalyptus tree that fell over on a connector from northbound Interstate-805 to northbound highway 163," said Scheidnes.
National Weather Service forecasters said the strong winds will let up by morning.
