rolling blackouts are when the power company starts shutting off power in a deliberate manner, neighborhood by neighborhood, based on a certain order.
It sounded like Glendale was turning off certain areas the past two days, when they met the maximum capacity of the transformers....the way they explained it on the radio, if they let it go above maximum, the transformer could explode, and the repair would take days...
At least one good thing happened yesterday though. Because we left the house when it got too hot, we ended up buying my four year old his first two-wheeler!