A Japanese meteorological agency recorded the earthquake on the Noto peninsula, in Ishikawa prefecture at 16:10 local time (07:10 in Lisbon), at shallow depth.
At 4:40 pm there was a strong aftershock.
State television NHK TV warned of waves that could reach five meters along practically the entire western coast and called on the population to climb to elevated areas or to the top of buildings as quickly as possible.
The first waves, around 1.2 meters high, reached the city of Wajima, around 500 kilometers west of Tokyo, at 16:21 (7:21 in Lisbon), said HNK, which activated the programming of emergency.
Authorities warned that these first waves could be followed by much higher waves.
Other locations in Ishikawa or Niigata prefectures recorded tide increases of between 540 and 80 centimeters.
The area includes a nuclear plant, whose operator, Tokyo Electric Power Co., said it was checking for possible problems, but said it had not immediately reported any irregularities.
Prime Minister Fumio Kishida’s office convened a crisis cabinet to manage the situation.
Japan is a country prone to earthquakes. In March 2011, a large earthquake followed by a tsunami caused a serious nuclear accident in Fukushima.
[Notícia atualizada às 08h29]
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