( CNN ) Southerners , do n't pack your sweaters or heavy coats away just yet . You 're probably going to need them for a few days . A cold front is headed across the country . Enjoy the warmth until it gets where you are , because after that temperatures are going to drop 20 degrees or more before you know it . And it 's not just the South that will have to put up with the cold . Almost a third of the people in the United States are bundling up and looking up to the sky . Another widespread winter event was shaping up Wednesday afternoon , and it looks as if it will last through Thursday . About 92 million people are under some sort of winter weather warning , watch or advisory . The wintery weather will eventually extend nearly 2,000 miles , from New Mexico to Massachusetts . For once , Boston wo n't be worried about a being a segment leader in snow totals . Looks likes that will be Kentucky , where some spots could see 6 to 10 inches . Other areas will have to worry about heavy rain dumped by the slow moving front . Cities in southeast Missouri , western Kentucky , northern Tennessee and western Pennsylvania might get 2 to 4 inches . Rain will transition to snowfall across many states as colder air pushes in behind the front as it moves to the southeast . The National Weather Service warned that flooding could be an issue , especially across the lower Ohio Valley and western Mid-Atlantic regions . CNN affiliate WCHS reported a mudslide in Mingo County resulted in one woman going to the hospital . There are concerns about ice and the potential for power outages . Arkansas , northern Mississippi and western Tennessee will get the brunt of the icy weather . Some areas could see more than a third of an inch of ice accumulation . Sleet and ice are expected to make things messy in the Dallas area . The precipitation was causing problems at Dallas/Fort Worth International Airport , where more than 630 arrivals and departures were canceled or delayed . Nationwide , more than 3,800 flights were delayed , according to the air traffic tracking website FlightAware . At least 1,750 were canceled . Things will be worse Thursday , at least as cancellations go . More than 2,000 flights with U.S. ties have been scrubbed . So far this season Boston has seen 105.7 inches -- almost 9 feet -- of snow . That 's just 1.9 inches short of the record set nine years ago . More snow is expected from this system , but it 's only likely to be 1 inch Wednesday as the forecast models indicate the majority of snow will stay south of the city . There is a slim chance of snow on Thursday , followed by days of sunshine and temperatures near 40 by Monday . CNN meteorologists Dave Hennen and Matt Daniel contributed to this report .
more than a third flights with U.S. ties canceled or delayed . People in Louisville and other cities in Kentucky will have plenty of snowman-building material . Boston is close to a season snow record , but it 's iffy this system will provide enough to top the mark .