My brother and his family live just a few miles west of Poway, about 200 yards south of the Ted Williams Parkway. I left a message on his home phone earlier, and e-mailed his wife at her work, but no response. I hope they've evacuated to safety. Prayers for them and for your relative.
The good news is that he said that the wind had calmed down. The potential bad news is that he said that the fire was now burning to his west, not what you want to hear. His email came in at about 8:45 p.m. Pacific time. I sure hope that your brother and his family have evacuated if they were told to do so.