San Diego Gas & Electric restored power to a few thousand customers Thursday morning but with another series of Santa Ana winds expected to barrel through the county Thursday night and early Friday, the utility warned that a fresh set of outages may resume.

The winds are common in California in the colder months, but they can sometimes help spread dangerous wildfires.

By the time the winds get to the point where the Eaton Fire broke out in Altadena on Jan. 7, it’s not uncommon for them to have less than 5 percent relative humidity, meaning essentially no moisture at all.