A series of 21 earthquakes all being at least 4.0 magnitude hit central Japan all within around 90 minutes on Monday, the Japan Meteorological Agency said.

The strongest of them was measured to be 7.6. The earthquakes resulted in tsunami warnings and authorities called upon people in the area to move to higher ground. Authorities are still assessing how much damage has been caused and residents need to prepare for more tremors, Prime Minister Fumio Kishida said in comments aired on NHK.

Source: https://www.ndtv.com/world-news/japan-earthquake-japan-tsunami-21-earthquakes-over-magnitude-4-0-hit-japan-in-90-minutes-4780275/amp/1