<p>A sudden summer storm flooded Las Vegas streets and knocked down power lines on July 20.</p><p>This video shows vehicles slogging through waterlogged streets in southern metro Las Vegas after the storm passed.</p><p>Local news reports</a> said that severe thunderstorms on Thursday evening left at least 13,000 homes without power into Friday morning. Credit: @yanibutterfly via Storyful</p><br />