Radar video of 600-mile “Ring of Fire Derecho” that knocked out power to D.C. area by bill dawers • July 1, 2012 Read more → Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Reddit (Opens in new window)MoreClick to print (Opens in new window)Click to share on Pocket (Opens in new window)