This is an archived article that was published on sltrib.com in 2013, and information in the article may be outdated. It is provided only for personal research purposes and may not be reprinted.

What happened when a transformer failed inside a Wyoming electrical substation is a powerful reminder of how terrifying electricity can be.

This looks worse than it is: Power station failure caught on camera (VIDEO)

About 11,000 residents of Casper, Wyo., lost power early Sunday morning when an electrical substation delivered what looked like a massive explosion or fire - except it wasn't.The Star-Tribune reports that the electrical arc was caused by a transformer failure. Power was restored within about three hours.Video contains some obscene languageThe incident happened just after 5 a.m. Jennifer Wistisen told the Star-Tribune she woke up to her house shaking and thought the neighborhood was being bombed.