As much as 27 centimetres (10.6 inches) of snow was recorded in Tokyo by late yesterday, the heaviest fall in the capital for 45 years, according to meteorologists.
The storm hit Tokyo on the eve of its gubernatorial election. Observers say the heavy snowfall may affect voter turnout in the city of 13 million people.
As a depression moved along the Pacific coast yesterday, the northeastern city of Sendai saw 35 centimetres (13.8 inches) of snow, the heaviest in 78 years.
In central Aichi prefecture, a 50-year-old man died after his car slipped on the icy road and rammed into an advertisement steel pole, a local rescuer said.
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Public broadcaster NHK reported at least 1,051 people were injured across the nation, many of whom had slipped on the ground or fallen while shovelling the snow off their roofs, NHK said.
More than 20,000 households were without electricity early today while airlines cancelled nearly 300 domestic flights a day after more than 740 flights were grounded yesterday.
Further snowfall is expected today in the northern part of the country, the Japan Meteorological Agency said.