(Adds details, latest snowfall data)
TOKYO, Jan 22 (Reuters) - A rare snowstorm hit Tokyo on Monday, snarling train services, forcing the cancellation of scores of flights and prompting hordes of workaholic Japanese to heed official advice to head home early.
Snow began falling on Monday morning, with as much as 10 cm (4 inches) predicted for central Tokyo by the time it is expected to stop early on Tuesday. By 7:00 p.m., 16 cm (6.3 inches) had fallen in central Tokyo as the snowfall intensified, national broadcaster NHK said.
Train services were curtailed and some highways were closed, as icy roads were causing traffic accidents. Around 250 flights from Tokyo's Haneda airport were cancelled.
"It's really a pity the flight was cancelled earlier in the day, as I've travelled here using paid holidays," one woman told the NHK. "I never thought I'd see snow in Tokyo," said another woman.
About 50 cars got stuck and unable to move on the "Rainbow Bridge" on Tokyo's waterfront. About 200 passengers were evacuated from the "Yurikamome" train carriages that were unable to go up a slope due to the snow, NHK said.
A looming low pressure system and cold front just off the coast of Japan's main island of Honshu was expected to bring low temperatures and more snow throughout the day and night, the Japanese Meteorological Agency said.
The Japanese capital, which is on roughly the same latitude as the U.S. city of Raleigh, North Carolina, often sees snow at least once a year, but this time it is expected to accumulate, rather than quickly melt as it usually does.
The government issued heavy snow warnings for the area around the capital, just two weeks after hundreds of people were trapped overnight in a train in northern Japan by heavy snow.
NHK offered detailed recommendations for coping with the weather, including wearing boots with heavy treads, heading home early and not walking with hands in coat pockets in case of slips and falls. It showed people how to walk like penguins.
Trains to the suburbs were packed full by the unusually early hour of 4:00 p.m. and long lines formed at supermarkets.
NHK said universities had postponed entrance exams due to have been held on Tuesday morning.
Tokyo Electric Power Company Holdings called for households and corporations to save power as electricity demand rises when the temperature falls.
A disaster management centre in the prime minister's office was collating information on the situation.
"We will respond to this based on various scenarios," Chief Cabinet Secretary Yoshihide Suga told a news conference. "We call on all citizens to keep informed about the latest conditions and beware of transport delays." (Reporting by Kaori Kaneko, Elaine Lies and Tetsushi Kajimoto; Editing by Simon Cameron-Moore and Clarence Fernandez)