A major power outage has left much of O'ahu in the dark tonight, disrupting outgoing flights, post-Christmas shoppers at malls and thousands of residents.

Power went out about 6:50 p.m. downtown, and earlier at some places, such as Pearlridge Center.

Some residents called to say they saw lightning shortly before the power went out.

Power is out in downtown Honolulu, Kaimuki, Waikiki, Pearl City, Kapolei and other areas. Makakilo still had power as of 7:20 p.m.