More wintry weather spreading over East

The National Weather Service issued a winter storm warning for Tuesday for the Eastern Seaboard, including Baltimore, Washington, D.C., Philadelphia and Wilmington, Del. Snow accumulations of 3 to 6 inches were expected.

Eastern and central Kentucky and southwest Virginia were expected to get 1 to 3 inches. All of West Virginia was likely to see snow Tuesday, with 2 to 4 inches forecast for northern and central parts of the state and 3 to 5 in the mountains.

The new snow would come on the heels of wintry weather Sunday, which dumped several inches on Philadelphia and northern Maryland.

Federal offices in the D.C. area will be closed Tuesday as a round of snow is expected to hit the region just in time for the morning commute. 

This storm is threatening to dump more snow than D.C. has seen in two years, CBS News' Nancy Cordes reported on "CBS This Morning". Federal officials, concerned about the morning and especially the afternoon commute,  closed federal offices. 

According to the Office of Personnel Management -- non emergency employees will be granted excused absence -- while emergency and telework-ready employees, who are required to work Tuesday, should still follow their agency's policies.

All the local public school systems are closed today as well.

Snow and bitter cold snarled traffic and prompted more than 1,900 U.S. flight cancellations on Monday, and tens of thousands of people were still without power after January-like weather barged in a month early. 

The storm covered parts of North Texas in ice over the weekend and then moved East. Below-zero Fahrenheit temperatures crowned the top of the U.S. from Idaho to Minnesota, where many roads still had an inch-thick plate of ice, polished smooth by traffic and impervious to ice-melting chemicals, making intersections an adventure. 

Many travelers wished they were home, and people in homes without power wished they were somewhere else. 

Some of the most difficult conditions were in North Texas. More than 22,000 Dallas-area homes and businesses were still without power on Monday, according to electric utility Oncor. That was down from 270,000 on Friday. Dallas students got the day off from school. 

The final tally on Monday's cancelled flights is 1,927, according to FlightAware data.  There have been 1,076 flights cancelled so far on Tuesday.  So far, Newark Liberty International Airport is edging out Dallas/Fort Worth International Airport for the most cancelled flights.

Half of the high school band from Norman, Oklahoma, landed at Dallas-Fort Worth on Monday after playing in a Pearl Harbor Day parade in Hawaii. But the flight for the other half of the band was canceled because of the ice, leaving them stranded for an extra day in Hawaii. 

"Tough break for them, huh?" joked parent chaperone Tami Meyer. 

The storm dumped snow through the Mid-Atlantic region. Freezing rain prompted the federal government to allow workers to arrive up to two hours later than normal Monday or take unscheduled leave. 

Power outages were reported in Virginia, parts of West Virginia, Maryland and the metropolitan Washington, D.C., area following freezing rain, wet snow and sleet. More than 15,000 customers in Maryland were without power, where the weight of the ice weakened tree limbs that then contacted power lines and other equipment. Some 109,000 customers were without power in Virginia. 

Parts of northwest and southwest Virginia and southern West Virginia got snow, while sleet and freezing rain prevailed west and north of Richmond.

At Ronald Reagan Washington National Airport, more than 100 flights were canceled, according to FlightStats.com, and crowds were sparse Monday morning as travelers made alternate plans.