"Winter Storm Heather Causes Flight Delays and Cancellations Across Southern Airports"

Winter Storm Heather is causing icy and snowy conditions in the South, leading to school closures, travel warnings, and thousands of flight delays across the country. Texas set a new record for electricity demand, prompting a conservation appeal. Multiple school closures have been announced in Louisiana, Mississippi, and Alabama. The storm is connected to at least four deaths in Oregon. Frigid temperatures and winter weather have led to the cancellation or postponement of Martin Luther King Jr. Day events in multiple cities and towns across the country. Residents are advised to layer up and stay indoors as the dangerous cold persists.