Rare dust storm blankets Chicago

The Chicago skyline disappeared momentarily as a wall of dust blew through the city. The National Weather Service attributed this to 60 to 70 mph winds that blew over dry farmlands, collecting dust and blowing it through the Chicago area, according to CNN affiliate WBBM.

​ The Chicago skyline disappeared momentarily as a wall of dust blew through the city. The National Weather Service attributed this to 60 to 70 mph winds that blew over dry farmlands, collecting dust and blowing it through the Chicago area, according to CNN affiliate WBBM. Read More Breaking News, Latest News and Videos | CNN