The winter of 2013-14 was one for the record books. It featured the second-coldest average temperature of all time (3.9 degrees) and was the third-snowiest. Last winter the Duluth Transit Authority (DTA) suspended service only three times. In early December, a snowstorm took over the Twin Ports and dumped nearly 2 feet on the area. On Dec. 4 at 5 p.m., the DTA began running the Emergency Mainline Service.