A winter storm with record-breaking cold temperatures, heavy snow, and strong winds is affecting a large area of the United States. Many flights have been canceled due to the storm, which is forecasted to impact the central and eastern parts of the country. The storm, referred to as a "bomb cyclone" because of its expected rapid decrease in barometric pressure, is being taken seriously by experts and US President Joe Biden, who called it "serious stuff" during a briefing on the storm.