HOUSTON — Fast-moving thunderstorms pummeled southeastern Texas on Thursday for the second time this month, killing at least four people, blowing out windows in high-rise buildings, downing trees and knocking out power to more than 850,000 homes and businesses in the Houston area. [time-brightcove not-tgx=”true”] Officials urged residents to keep off roads, as many were impassable and traffic lights were expected to be out for much of the night. “Stay at home tonight.