2026-03-21 20:42 (UTC+9), AMAKUSA-ASHIKITA, KUMAMOTO, 10km Depth, M 3.3 by JMA

Is Distribution Maximum Observed Is:4

Seismic Intensity (Is) distribution is estimated from the observed data (circles) of NIED K-NET, KiK-net, JMA, and local governments that had been collected by 2026/03/21 20:47:57.

Estimated Is for Major Cities

Max. Obs. Is Histogram
of Estimated Is
1
2
3
4
5-
5+
6-
6+
7
 Municipality Show All Data Nighttime Population Distance
[km]
4
Minamata,Kumamoto 25,000 9
The histogram shows frequency distribution of estimated Is derived from interpolation of the observation with 250-m mesh. The daytime and nighttime correspond to 9:00-18:59 and 19:00-8:59, respectively. The distance is measured from the epicenter to the center of the municipality.

Is Exposed-Population Estimates of Each City

5- or greater
5- or greater
Not Available
5+ or greater
5+ or greater
Not Available
6- or greater
6- or greater
Not Available
6+ or greater
6+ or greater
Not Available
color scale

Population exposed to Is 5- or greater are not estimated.

Major Historical Damaging Earthquakes in This Region

Year Region M Damage
1893 Southern Kagoshima 5.3 Houses were damaged in Chirancho. 2 houses collapsed in nearby villages.
1909 Western Miyazaki 7.6 4 houses collapsed.
1913 Western Kagoshima 5.7 1 house collapsed.
1914 Central Kagoshima 7.1 Sakurajima Earthquake,39 houses collapsed, 13 dead in Kagoshima-city, 22 dead in Kagoshima-gun. A small tsunami was recorded.
1922 Tachibana Bay 6.9 Shimabara Earthquake,26 dead, 42 injured, 195 houses collapsed, and 459 non-residential houses collapsed in Nagasaki.
1968 Satsuma, Kagoshima 6.1 Ebino Earthquake,3 dead, 42 injured, 368 houses collapsed, 636 partially destroyed. On the 25th of March, 18 house collapses, 147 partial destructions.
1975 Aso, Kumamoto 6.1 10 injured in Kumamoto. 16 buildings collapsed, 17 partially destroyed, 12 roads damaged, 15 landslides.
1997 Satsuma, Kagoshima 6.6 36 injured, 4 houses collapsed, 31 partially destroyed in Miyanojyo-cho, Tsuruda-cho, Sendai-shi.
1997 Satsuma, Kagoshima 6.4 43 injured, 4 houses collapsed, 25 partially destroyed. Is 6- was measured in Senai-shi.
2016 Kumamoto, Kumamoto 7.3・6.5 The 2016 Kumamoto Earthquake, crustal earthquake with right-lateral faults in Futagawa and Hinagu fault zone. 50 dead (not including 45 related death), 2,245 injured, 8,147 houses collapsed, 29,008 partially destroyed (as of Aug. 26, 2016). The maximum Is was 7.
Reference: National Astronomical Observatory of Japan, Chronological Scientific Tables, Maruzen, (2017) *partially extracted

Seismic Hazard Information of J-SHIS

J-SHIS is a Web service by NIED, to help prevent and prepare for earthquake disaster by providing a public portal for seismic hazard information across Japan.

Is Distribution of 2% Probability of Exceedance in 50 Years
SI Distribution of 2% Probability of Exceedance in 50 Years SI color scale
Is Distribution of Return Period of 50,000-year
Is Distribution of Return Period of 50,000-year Is color scale