A week of extremely high temperatures and violent storms has left tens of thousands of people without power in at least two U.S. cities.
In the Queens section of New York City, the regional electric company revealed Friday that some 25,000 customers suffered power outages over the past week - 10 times its original estimate.
The Con Edison company said it had originally based its estimate on the number of clients who called to complain. The company revised its figures late in the week, after a block-by-block inspection.
High summer temperatures are known to put a strain on the city's power grid. But Con Edison says it cannot explain why power problems are continuing.
Meanwhile in the midwestern city of St. Louis, Missouri, officials say more than 500-thousand residents have been without power since heavy thunderstorms hit the region on Wednesday and Friday. Hundreds of residents are spending nights in emergency shelters to stay cool.
Some information for this report provided by AP.