ST. LOUIS COUNTY, Mo. – Multiple St. Louis-area counties are among the most at-risk in the nation when extreme winter weather hits, according to a recent ranking. The ranking dug into data from the Federal Emergency Management Agency and the National Oceanic and Atmospheric Administration to break down which counties throughout the U.S. faced the highest consequences when snow and ice fell. It was published by Texas-based heating and cooling company HVAC Gnome.