Philadelphia: A plodding storm that dumped heavy snow on the densely-populated Mid-Atlantic region made roads slippery in the Northeast for Monday's commute while travel disruptions continued to ripple across the United States days after the same system first began wreaking havoc in the skies.
The seemingly never-ending storm that coated parts of Texas in ice struck with unexpected force on the East Coast, blanketing some spots in a foot (300 millimeters) of snow, grinding highways to a halt and causing scattered school closures or delays.
The federal government was allowing workers to arrive up to two hours later than normal or take unscheduled leave as freezing rain continued.
Travel problems could linger into Monday afternoon, with freezing rain and icy conditions sticking around as wintry weather stretched across the eastern half of the U.S.
The storm canceled more than 3,200 flights Sunday and delayed thousands more, according to estimates from the website Flightaware.com.
More than 1,300 flights Monday were already canceled, the greatest share from Dallas/Fort Worth International Airport, which was still reeling from the effects of the ice storm that brought northern Texas to a standstill.
About 650 people were stranded there Sunday night, down from Saturday night when about 2,000 travelers were stranded, spokesman David Magana said.
The forecast for Monday remained up in the air for the Northeast, depending on how quickly the system moves and temperatures rise, according to the National Weather Service.
Meanwhile, a winter storm warning was issued for Washington and Baltimore, where up to a quarter inch (630 millimeter) of ice was expected because of freezing rain that could cause power outages.
The expectation was for another weather system moving out of Virginia to follow the same path as Sunday's storm overnight.
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