Share this postLast week's polar vortex in Chicago, Illinoisdailyoverview.substack.comCopy linkFacebookEmailNoteOtherLast week's polar vortex in Chicago, IllinoisOverviewFeb 05, 2019Share this postLast week's polar vortex in Chicago, Illinoisdailyoverview.substack.comCopy linkFacebookEmailNoteOtherShareSource imagery: ESA - European Space Agency via Descartes LabsFollow Daily Overview here:Instagram | Facebook | Tumblr | Twitter