A powerful typhoon is approaching the east coast of Japan. In the region that also includes the capital Tokyo, heavy downpours, strong winds, and possible flooding and landslides are expected.
Typhoon Dujuan is moving close to the metropolitan area of Tokyo and Yokohama, according to the Japan Meteorological Agency (JMA). For the Izu Islands off the coast, the second highest warning for landslides applies. Residents have been advised to move to safer places.
This means they should stay away from cliffs and streams and preferably move to higher floors of buildings or to evacuation centers. In certain neighborhoods of Tokyo and Yokohama, residents are now also being called upon to do so.
Last weekend, there was already a lot of rain in the area. In some places on the Izu Islands and in Chiba Prefecture, more than 300 millimeters of rain fell since Saturday.
In Sakura, a city east of Tokyo, part of a hill slid down causing damage to a house. There were no injuries.
Today, the downpours may increase in intensity and there is a greater risk of sudden flooding. Especially if so-called linear rain bands develop. These are long, narrow rain areas from which enormous amounts of precipitation can fall locally over a few hours.
Such extreme downpours have become an increasing concern in Japan in recent years. Last month, the east coast of Japan was also hit by heavy rainfall. Several deaths occurred then in Chiba Prefecture.
Anoma van der Veere, correspondent Japan:
"The severe weather can quickly have major consequences in an area with nearly 40 million inhabitants. If a few railway lines fail or roads flood, hundreds of thousands of people are affected quickly.
And the timing is unfortunate. Japan is in the middle of 'Silver Week', a series of national holidays when many people visit family or travel. Trains, airports, and highways are normally extra busy. Now flights and trains are being canceled and people are advised to stay indoors and postpone unnecessary travel.
Also, in the middle of megacities like Tokyo and Yokohama, there are hilly neighborhoods with steep slopes where there is a danger of landslides during extreme rainfall.
On the streets, this is already noticeable: steep streets and stairs have turned into small waterfalls. An umbrella hardly helps when the wind picks up and the rain comes from all sides. Especially tunnels and roads under railway lines are already starting to fill up. Drivers are advised to avoid those."
According to the Japanese weather bureau, Dujuan will rush along the coast of Chiba at 126 kilometers per hour, with gusts up to 180 kilometers per hour. More than 350 millimeters of rain is expected in some places.
Nippon Airways is grounding all flights from Hachijo Island, south of Tokyo. Railway company JR East has suspended train traffic on some lines in Chiba.
The typhoon season in Japan runs roughly from May to October. Dujuan is the 25th typhoon this year. That is not an exceptionally high number. However, in recent years, typhoons often bring more rain.
Several events have been canceled, such as parts of the Asian Games.