7.4 Earthquake Hits Northern Japan: Tsunami Waves Recorded

Chandani — Mon, 20 Apr 2026 09:32:21 +0000

7.4 Magnitude Earthquake Shakes Northern Japan: Tsunami Hits Iwate

Now a major disaster is taking place on the north coast of Japan. Specifically, a strong 7.4-magnitude earthquake hit the area at 4:53 PM today. This happened on Monday, April 20, 2026. Indeed, the Japan Weather Agency gave out a tsunami alert right away. Therefore, thousands of people are moving to high ground to stay safe. In fact, the first sea waves have already hit the land in Iwate. Simple as that.

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Japan Tsunami Update: Monday, April 20, 2026

Now you can see the wave heights found at different ports on the coast. Actually, the situation is still moving as more waves hit the shore. In fact, here is the latest data from the weather team.

Location	Wave Height	Time Found (JST)
Kuji Port, Iwate	80 cm (31 inches)	5:34 PM
Kuji Port, Iwate	70 cm (28 inches)	5:32 PM
Aomori Coast	50 cm (Soon)	Ongoing
Warning Status	Live (3 Meters)	Move Now

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1. Move Now: “Run to High Ground”

Now the government has sent a loud plea to all who live near the sea. Actually, the agency warned that waves could reach 3 meters in some spots.

The Safety Plan

First, people must leave all beach and river areas right now. Next, you should go to high hills or a strong safety building. Thus, you stay away from the fast water that can pull you out. Furthermore, the team warned that sea waves hit the land many times. Specifically, the first wave is often not the biggest or the most dangerous one. Therefore, do not go back to your house until the alert is gone. Period.

2. Prime Minister Takaichi Sets Up Help Team

Now the Prime Minister’s office has started a plan to manage this crisis. Actually, Prime Minister Sanae Takaichi spoke to the nation after the shaking stopped.

Government Action

First, the office has set up a special help team in Tokyo. Next, workers are trying to find out about any injuries or broken homes. Thus, the government can send aid to the hard-hit spots in Iwate. Additionally, the Prime Minister told people to save their lives first. She said do not worry about your things right now. Moreover, she said the army is ready to help with rescue work. Consequently, the whole country is looking at the north coast tonight. Period.

3. Japan and the “Ring of Fire”

Now this 7.4-magnitude quake shows us how Japan sits on shaky ground. Actually, the land sits on four big plates in the Pacific “Ring of Fire.”

The Science of Shaking

First, Japan feels about 1,500 small and big shakes every single year. Next, this area sees about 18% of the world’s most strong quakes. Thus, the islands are some of the most active places on the globe. Furthermore, today’s shake was felt in Tokyo, which is very far away. Specifically, tall towers in the city swayed for a few minutes today. Therefore, the memory of the 2011 disaster keeps everyone on a high alert. Period.

Frequently Asked Questions

Q: How strong was the quake today?

Now, the teams recorded the shake at a magnitude of 7.4. Thus, it is a very strong and scary event for the people.

Q: Are the nuclear plants in the area okay?

Actually, teams say they see no problems at the big power plants so far. Therefore, the lights are still on for most homes.

Q: Are the fast trains still running?

Actually, no. All bullet trains between Tokyo and the north have stopped. Thus, you should plan for a long wait if you are traveling.

Q: Is this the “Megaquake” everyone fears?

Since this quake was in the north, it is not the Nankai Trough event. Therefore, there is no new “Megaquake” alert today.

The Bottom Line

Now the Japan Earthquake of April 2026 is a big test for the safety teams. While the first waves were less than 1 meter, the danger is still here.

Overall, the next few hours are very key for people on the coast. Therefore, keep your radio on for the latest news on wave heights. Thus, you can keep your family safe from the ocean water. Meanwhile, keep checking our blog for more news as it comes in! Lastly, we hope everyone finds safe ground tonight!

Stay safe. Watch the water. Period.

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