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2026-04-27 05:24 (UTC+9),
SOUTHERN TOKACHI,
80km Depth, M 6.1 by JMA

Is Distribution Maximum Observed Is:5+

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 2026/04/27 05:34:23.

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]
5+
Urahoro,Tokachi,Hokkaido 4,900 51
4
Obihiro,Hokkaido 170,000 37
4
Kushiro,Hokkaido 170,000 112
4
Hakodate,Hokkaido 270,000 216
4
Kiyota,Sapporo,Hokkaido 110,000 142
4
Chitose,Hokkaido 96,000 121
4
Muroran,Hokkaido 88,000 177
3
Kita,Sapporo,Hokkaido 290,000 153
3
Higashi,Sapporo,Hokkaido 260,000 151
3
Tomakomai,Hokkaido 170,000 122
3
Atsubetsu,Sapporo,Hokkaido 130,000 141
3
Mutsu,Aomori 59,000 215
3
Ebetsu,Hokkaido 120,000 139
3
Iwamizawa,Hokkaido 85,000 127
3
Hachinohe,Aomori 230,000 267
3
Shiroishi,Sapporo,Hokkaido 210,000 147
3
Morioka,Iwate 300,000 360
3
Kitami,Hokkaido 120,000 149
3
Teine,Sapporo,Hokkaido 140,000 162
3
Toyohira,Sapporo,Hokkaido 220,000 148
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
5+ or greater
5+ or greater
6- or greater
6- or greater
6+ or greater
6+ or greater
Not Available
color scale
Show All Data
5- or
greater		 5+ or
greater		 6- or
greater		 6+ or
greater
Whole of Japan 20,000 5,000 < 1,000
Hokkaido Prefecture 20,000 5,000 < 1,000
Obihiro,Hokkaido 1,000
Atsuma,Yufutsu,Hokkaido < 1,000
Abira,Yufutsu,Hokkaido < 1,000
Mukawa,Yufutsu,Hokkaido 5,000
Biratori,Saru,Hokkaido < 1,000
Niikappu,Niikappu,Hokkaido 2,000
Shinhidaka,Hidaka,Hokkaido < 1,000
Otofuke,Kato,Hokkaido 1,000
Shikaoi,Kato,Hokkaido < 1,000
Shintoku,Kamikawa,Hokkaido < 1,000
Taiki,Hiro,Hokkaido < 1,000
Hiro,Hiro,Hokkaido < 1,000
Makubetsu,Nakagawa,Hokkaido 20,000
Ikeda,Nakagawa,Hokkaido < 1,000
Toyokoro,Nakagawa,Hokkaido 2,000 < 1,000
Hombetsu,Nakagawa,Hokkaido < 1,000
Ashoro,Ashoro,Hokkaido < 1,000
Urahoro,Tokachi,Hokkaido 5,000 5,000 < 1,000
The summation of the exposed population for each city does not necessarily equal to that of the prefecture or whole of Japan.

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 Is Distribution of Return Period of 50,000-year

Major Historical Damaging Earthquakes in This Region

Year Region M Damage
1915 Off Tokachi 7.0 1 dead, 1 house collapsed.
1952 Off Kushiro 8.2 Tokachi-oki Earthquake,Tsunami with heights of 3m in Hokkaido and 1-2 m on the Sanriku coast. 28 dead, 5 missing, 815 houses collapsed, 1,324 partially destroyed, 91 outflows.
1962 Off Tokachi 7.1 2 building collapses and some minor damage.
1970 Southern Tokachi 6.7 32 injured, 2 houses collapsed, 7 partially destroyed, 139 partially damaged.
1982 Off Urakawa 7.1 Uraga-oki Earthquake,167 injured, 9 buildings collapsed, 16 partially destroyed, 174 partially damaged, 45 railways damaged. A small tsunami was observed.
2003 Off Kushiro 8.0 Tokachi-oki Earthquake,1 dead, 1 missing, 849 injured, 116 houses collapsed, 368 partially destroyed. The maximum S was 6- (9 cities in Hokkaido). A tsunami whose maximum height was 4m hit Hokkaido and the Pacific coast of Honshu.
Reference: National Astronomical Observatory of Japan, Chronological Scientific Tables, Maruzen, (2017) *partially extracted