Powerful 5.9 Quake Rocks Tokyo, Paralyzes Train Network
Big Earthquake Shakes Eastern Japan: What Happened & What to Know
The Quick Version (TL;DR)
Early Sunday morning, a moderately strong earthquake hit near Tokyo. It scared a lot of people, caused some injuries, messed up train schedules, and broke a water pipe—but no tsunami and no nuclear problems. Experts say more shaking could happen in the next few days, so stay alert!
When & Where Did It Happen?
| Detail | Info |
|---|---|
| Time | 2:00 a.m. (local time), Sunday |
| Location | Southern Ibaraki Prefecture (just northeast of Tokyo) |
| Depth | 68 kilometers underground |
| Magnitude | 5.9 (on the Richter scale) |
| Japanese Intensity | Lower 5 (on a scale of 7) |
Fun Fact: Japan uses two scales!
- Magnitude = how much energy the quake released (same worldwide).
- Seismic Intensity (Shindo) = how hard it felt in each place (0 to 7).
What Does “Lower 5” Feel Like?
According to the Japan Meteorological Agency (JMA):
- Most people get scared and grab onto something stable.
- Objects fall off shelves.
- Unsecured furniture may move or tip over.
- It’s strong enough to wake you up—definitely not a gentle rumble!
Important: “Lower 5” is not the strongest level (that’s 7), but it’s strong enough to cause damage and injuries.
What Happened Right After?
Trains & Transport
- Many train lines delayed or ran at reduced speeds (JR East, Tobu Railway, Keisei Line).
- Keisei Line (Tokyo Narita Airport) back to normal by 9:40 a.m.
- Tobu Railway express trains still stopped as of the report.
Injuries Reported
Over 20 people hurt across nearby prefectures:
| Prefecture | Injuries |
|---|---|
| Saitama (north of Tokyo) | 2 (young man + woman in 70s) |
| Kanagawa (south of Tokyo) | 9 |
| Chiba (east of Tokyo) | 4 |
| Total | 20+ |
Other Damage
- Water pipe burst in Tokyo’s Koto Ward—officials checking if quake caused it.
Nuclear Plants: All Safe
| Plant | Location | Status |
|---|---|---|
| Tokai No. 2 | Ibaraki Prefecture | No abnormalities |
| Fukushima Daiichi | Northeast Japan | No abnormalities |
| Fukushima Daini | Northeast Japan | No abnormalities |
No radiation leaks, no emergency shutdowns. Operators monitored closely and everything stayed stable.
Official Response
- Prime Minister Sanae Takaichi posted on social media:
“I’ve told officials to assess damage fast and keep the public informed.”
- JMA issued an Emergency Earthquake Alert the moment the quake hit.
- Warning: Stay alert for more Lower 5 shaking over the next week—especially the next 2–3 days.
Where Was It Felt?
The quake was felt across a huge area:
- Central Tokyo (Adachi Ward = Lower 5; other wards = lower intensities)
- Saitama Prefecture (Lower 5 in parts)
- Chiba Prefecture (Lower 5 in parts)
- Northeastern & Central Japan broadly
ELI5: Why Do Earthquakes Happen in Japan?
Imagine the Earth’s crust is like a giant jigsaw puzzle.
Japan sits where four puzzle pieces (tectonic plates) grind against each other.
When they get stuck, then suddenly slip—BOOM! Earthquake.
Japan has thousands of quakes a year, but most are tiny. This one was big enough to notice.
What Should You Do Now? (Simple Steps)
- Check your home for cracks, gas smells, or fallen items.
- Turn off gas if you smell it or hear hissing.
- Stay away from damaged walls/ceilings.
- Keep a flashlight, water, and phone charged—just in case.
- Follow local news & JMA alerts for aftershock warnings.
- Don’t panic! Aftershocks are normal and usually smaller.
Summary
| Good News | Watch Out |
|---|---|
| No tsunami | Aftershocks likely (esp. next 2–3 days) |
| Nuclear plants safe | 20+ injuries reported |
| Major train lines recovering | Some trains still stopped |
| Govt. responding quickly | Water pipe burst in Tokyo |
FAQ
1. Was this “The Big One” people worry about?
No. A magnitude 5.9 at 68 km depth is moderate. “The Big One” would be much stronger (8+), shallower, and closer to Tokyo.
2. Why did trains stop if the quake wasn’t huge?
Safety first! Japan’s trains auto-stop when strong shaking is detected. They check tracks for damage before restarting.
3. What’s the difference between Magnitude and Shindo?
- Magnitude (5.9) = total energy (one number for the whole quake).
- Shindo (Lower 5) = how hard it shook in each town (varies by location).
4. Should I evacuate?
Only if your home is damaged or authorities say so. Otherwise, stay put, stay informed, and prepare for aftershocks.
5. How can I get alerts in English?
- JMA website (english.jma.go.jp)
- NHK World app (free, multilingual)
- Safety Tips app (by Japan Tourism Agency)—great for visitors!
Final Thought
Japan is one of the most earthquake-ready countries on Earth.
Buildings sway but don’t collapse. Alerts reach phones in seconds.
Stay calm, stay informed, and you’ll be okay.
Stay safe, everyone!