A snow storm hit the Kanto region on Friday, disrupting rail and road travel, grounding more than 100 flights and adding to the piles left behind by an earlier blanketing.
Up to 30 centimeters of snow was forecast for some parts of the country by Saturday morning, a week after the heaviest snowfall in decades left at least 11 people dead and more than 1,200 injured.
Tokyo had a thin covering by early Friday afternoon and the weather agency was warning it would continue into the night.
The agency also warned of heavy snow in western and central Japan as well as strong winds and high waves along coastal areas.
The storm caused delays on the shinkansen bullet train services.
Japan Airlines (JAL) said it had cancelled 77 flights for Friday and All Nippon Airways (ANA) grounded 40 flights at Narita, Haneda and other airports across the nation. Jiji Press said 16,000 air passengers were affected.
Forecasters said the bad weather would continue into Saturday.
Last week, as much as 27 centimeters of snow was recorded in Tokyo, the capital's worst snowfall for 45 years.
While much of that snow had melted, the remains of larger piles as well as some slightly diminished snowmen were still in evidence across the city.
Narita Airport, which came under fire for not being prepared for last Saturday's snowfall, was better prepared Friday.
Last Saturday, flight cancellations forced nearly 6,000 passengers to spend the night in the terminals because bus and rail services from the airport were suspended. The airport did not have enough blankets or bottles of water to give to irate passengers.
On Thursday, airport authorities said they had stocked up on sleeping bags, blankets, food and water for passengers who are likely to get stuck in the terminal building on Friday, NHK reported.© AFP/Japan Today