 Lisa Lucera, Fox News. That's the warning from Texas officials as millions are without power after Barrel roared through. Houston took a hard hit. An estimated two million people are without power in the Houston area. Texas' acting governor is urging people in Barrel's path not to take warnings lightly. Before hitting Texas, Barrel grew to a category five, tearing its way through the Caribbean, destroying homes and wreaking havoc on islands in the Gulf of Mexico.