Tsunamis in Japan
12 tsunamis have been recorded in Japan by Global Incident Tracker, 12 of them in 2026. The most recent was on 29 October 2026. These are incidents our sources reported, not an official national total.
0
Today (UTC)
5
Last 7 days
12
In 2026
12
Total recorded
Continuous monitoring began 9 August 2026. These counters show what we have recorded since then, not everything that happened.
Most recent tsunamis in Japan
Magnitude 5.5 earthquake hits Chiba Prefecture near Tokyo, no tsunami threat
Moderate
Magnitude 5.4 earthquake shakes Tokyo and nearby prefectures; no tsunami alert issued
Moderate
Magnitude 5.4 Earthquake Strikes Japan’s Chiba Prefecture; No Tsunami Warning Issued
Moderate
M5.4 Chiba quake shakes Tokyo and nearby prefectures; no tsunami warning issued
Moderate
M5.4 quake shakes Tokyo and surrounding prefectures; no tsunami warning issued
Moderate
6.5-Magnitude Earthquake Strikes Japan’s Bonin Islands, No Tsunami Warning Issued: 5 outlets compared
Minor
BONIN ISLANDS JAPAN REGION
Severe
in the Bonin Islands, Japan region
Severe
No tsunami threat to Hawaii after 7.0M earthquake near Bonin Islands, Japan
Minor
In 2011, Japan’s earthquake, tsunami, and nuclear meltdown forced Fukushima families to leave dogs; 17 rescues had 5–10 times more stress hormones | World News
Minor
How to prepare for an earthquake and tsunami in Tokyo
Moderate
Magnitude 5.8 earthquake strikes near Tokyo, no tsunami warning issued
Moderate
When they happen
October carries the most tsunamis we hold for Japan — 10 of 12. This is when incidents were reported, so read a quiet month as either a quiet month or thin reporting.
| Month | Recorded | |
|---|---|---|
| January | 0 | |
| February | 0 | |
| March | 0 | |
| April | 0 | |
| May | 0 | |
| June | 1 | |
| July | 1 | |
| August | 0 | |
| September | 0 | |
| October | 10 | |
| November | 0 | |
| December | 0 |
Where this data comes from
Tsunamis have official real-time feeds, and ours come from NOAA / PTWC · GDACS.