reports that the tornado destroyed dozes of homes and has left thousands of people without electricity. Tsukuba is roughly 60 kilometres (37 miles) northeast of Tokyo.
The tornado struck at 12:45 p.m. and firefighters and helicopter medical teams were rushed into the area immediately afterwards.
Quoting Tsukuba Medical Center, Boston.com
has reported 1 death, that of a 14-year-old boy who died after being injured in the storm. 10 other people are currently being treated at hospitals in the area.
Many houses have lost their roofs and apartment complexes have smashed balconies and shattered windows.
cars in muddy debris and fallen concrete power poles were shown on national broadcaster NHK TV.
"You could see the roaring column of wind rushing with sparks from live power lines inside it," a local man told NHK.
the fire department stated that 30 to 50 homes were destroyed, NHK TV has now reported that some 200 homes have been damaged.
According to Tokyo Electric Power Co, around 24,000 are without electricity. Lightning and strong winds added to the damage by the tornado.
TEPCO has reported that Fukushima Daiichi nuclear power plant has not been affected by Sunday's tornado.
Tornados are a very rare weather condition in Japan.