Recovery and repair efforts continued Tuesday, a day after a tornado tore a path through Koshigaya, Saitama Prefecture, and Noda, Chiba Prefecture.
Meanwhile, the Meteorological Agency continued its investigation into whether the tornado was produced by a supercell, the least common type of thunderstorm but capable of producing severe weather, including tornadoes.
Tornadoes form due to a twisting motion of rising air, the columns of which are in contact with dense cumulonimbus clouds. The rapid decreasing air pressure at the tornado center triggers extremely strong winds.