UPDATE: Power restored after 30,000-customer outage in West Boise, Eagle, Star

A transmission line that runs into the Eagle substation failed Tuesday morning, knocking out power to 30,000 customers in the region, according to Idaho Power. The outage was reported around 7:30 a.m.

At about 9:15 a.m., Idaho Power announced on Twitter that electrical service to some customers was coming back online. Shortly after 10 a.m., the utility said power was restored to everyone affected by the outage.

Four Boise School District schools were affected by the outage: Cynthian Mann, Shadow Hills and Pierce Park elementaries and Rivergen Junior High.

Classes continued through the outages and in some case, the district provided lanterns so schools would have light.

Linda Clark, superintendent at West Ada School District, said schools in Eagle and Star and Centennial High School were blacked out.

An Idaho Power spokeswoman said the transmission line failure affected five substations and about 30,000 customers. The Eagle substation is on old State Street, while the other substations affected are near Star, Hewlett Packard, Joplin (Chinden and Cloverdale), and Gary (State Street at Gary Lane).

Traffic signals were out, and that slowed down morning commuters. Motorists are advised to treat dark signals as a four-way stop.

The area impacted is Veterans Parkway to Star Road, and Chinden Boulevard to State Street.

This is a breaking news report. Check back for updates as they become available.