J-RISQ Report

2026-05-15 20:22 (UTC+9), OFF MIYAGI, 50km Depth, M 6.3 by JMA

I_s Distribution Maximum Observed I_s:5-

Seismic Intensity (I_s) distribution is estimated from the observed data (circles) of NIED K-NET, KiK-net, JMA, and local governments that had been collected by 2026/05/15 20:29:26.

Estimated I_s for Major Cities

Max. Obs. I_s	Histogram of Estimated I_s 1 2 3 4 5- 5+ 6- 6+ 7	Municipality Show All Data	Nighttime Population	Distance [km]
5-		Osaki,Miyagi	130,000	105
5-		Ishinomaki,Miyagi	150,000	86
5-		Minamisanriku,Motoyoshi,Miyagi	12,000	60
5-		Tome,Miyagi	82,000	82
4		Wakuya,Toda,Miyagi	16,000	93
4		Kesennuma,Miyagi	65,000	46
4		Ichinoseki,Iwate	120,000	84
4		Kurihara,Miyagi	70,000	95
4		Ofunato,Iwate	38,000	39
4		Kamaishi,Iwate	37,000	46
4		Hanamaki,Iwate	98,000	101
4		Misato,Toda,Miyagi	25,000	98
4		Matsushima,Miyagi,Miyagi	15,000	106
4		Otsuchi,Kamihei,Iwate	12,000	54
4		Tono,Iwate	28,000	68
4		Rikuzentakata,Iwate	20,000	43
4		Hiraizumi,Nishiiwai,Iwate	7,900	86
4		Kitakami,Iwate	94,000	95
4		Iwanuma,Miyagi	44,000	138
4		Natori,Miyagi	81,000	132
4		Higashimatsushima,Miyagi	39,000	93
4		Sumita,Kesen,Iwate	5,700	53
4		Katsurao,Futaba,Fukushima	20	194
4		Morioka,Iwate	300,000	121
4		Oshu,Iwate	120,000	87
4		Takizawa,Iwate	56,000	128
4		Rifu,Miyagi,Miyagi	37,000	116
4		Yahaba,Shiwa,Iwate	29,000	114
4		Shikama,Kami,Miyagi	7,200	115
3		Soma,Fukushima	38,000	160
3		Watari,Watari,Miyagi	34,000	144
3		Ogawara,Shibata,Miyagi	23,000	152
3		Hashikami,Sannohe,Aomori	14,000	177
3		Yamamoto,Watari,Miyagi	12,000	149
3		Miyagino,Sendai,Miyagi	190,000	125
3		Miyako,Iwate	57,000	83
3		Ninohe,Iwate	28,000	167
3		Kami,Kami,Miyagi	24,000	114
3		Marumori,Igu,Miyagi	14,000	160
3		Nakayama,Higashimurayama,Yamagata	12,000	170
3		Osato,Kurokawa,Miyagi	8,400	108
3		Fudai,Shimohei,Iwate	2,800	124
3		Shiogama,Miyagi	53,000	114
3		Kanegasaki,Isawa,Iwate	16,000	91
3		Yamada,Shimohei,Iwate	16,000	64
3		Kawasaki,Shibata,Miyagi	9,100	150
3		Koriyama,Fukushima	340,000	225
3		Hachimantai,Iwate	26,000	147
3		Hachinohe,Aomori	230,000	187
3		Izumi,Sendai,Miyagi	220,000	123
3		Minamisoma,Fukushima	58,000	171
3		Tomiya,Miyagi	51,000	118
3		Kunimi,Date,Fukushima	9,300	177
3		Onagawa,Oshika,Miyagi	6,300	76
3		Taiwa,Kurokawa,Miyagi	29,000	117
3		Kakuda,Miyagi	31,000	154
3		Daisen,Akita	83,000	153
3		Oirase,Kamikita,Aomori	24,000	198
3		Zao,Katta,Miyagi	12,000	153
3		Ohira,Kurokawa,Miyagi	6,300	116
3		Noda,Kunohe,Iwate	4,200	137
3		Futaba,Futaba,Fukushima	0	187
3		Aoba,Sendai,Miyagi	310,000	127
3		Shingo,Sannohe,Aomori	2,400	191
3		Tamura,Fukushima	39,000	210
3		Wakabayashi,Sendai,Miyagi	130,000	127
3		Hitachiota,Ibaraki	52,000	296
3		Nambu,Sannohe,Aomori	18,000	185
3		Gonohe,Sannohe,Aomori	17,000	194
3		Tamakawa,Ishikawa,Fukushima	6,700	239
3		Okuma,Futaba,Fukushima	0	192
3		Sukagawa,Fukushima	77,000	235
3		Hirata,Ishikawa,Fukushima	6,500	229
3		Nishigo,Nishishirakawa,Fukushima	21,000	259
3		Kori,Date,Fukushima	13,000	180
3		Rokunohe,Kamikita,Aomori	11,000	201
3		Shinchi,Soma,Fukushima	8,300	153
3		Shizukuishi,Iwate,Iwate	17,000	131
3		Kunohe,Kunohe,Iwate	5,900	157
3		Nakagawa,Nasu,Tochigi	17,000	293
3		Inashiki,Ibaraki	43,000	362
3		Yabuki,Nishishirakawa,Fukushima	18,000	243
3		Fukushima,Fukushima	290,000	190
3		Yokote,Akita	92,000	140
3		Otawara,Tochigi	75,000	290
3		Shirakawa,Fukushima	61,000	257
3		Shiwa,Shiwa,Iwate	32,000	108
3		Murayama,Yamagata	24,000	156
3		Shichigahama,Miyagi,Miyagi	19,000	112
3		Ichinohe,Ninohe,Iwate	13,000	161
3		Nakajima,Nishishirakawa,Fukushima	4,800	247
3		Nishiwaga,Waga,Iwate	5,900	123
3		Miharu,Tamura,Fukushima	18,000	214
3		Iwaki,Fukushima	350,000	231
3		Akita,Akita	320,000	194
3		Tsuruoka,Yamagata	130,000	198
3		Date,Fukushima	62,000	180
3		Shibata,Shibata,Miyagi	40,000	149
3		Kuji,Iwate	36,000	146
3		Tohoku,Kamikita,Aomori	18,000	216
3		Yuza,Akumi,Yamagata	14,000	190
3		Iwate,Iwate,Iwate	14,000	142
3		Murata,Shibata,Miyagi	12,000	148
3		Izumizaki,Nishishirakawa,Fukushima	6,500	250
3		Tenei,Iwase,Fukushima	5,400	244
3		Ikawa,Minamiakita,Akita	5,000	207
3		Obanazawa,Yamagata	17,000	150
3		Yonezawa,Yamagata	86,000	204
3		Shiroishi,Miyagi	35,000	163
3		Furudono,Ishikawa,Fukushima	5,300	242
3		Towada,Aomori	63,000	205
3		Hirono,Kunohe,Iwate	17,000	171
3		Taihaku,Sendai,Miyagi	220,000	130
3		Sakata,Yamagata	110,000	196
3		Nihommatsu,Fukushima	58,000	206
3		Motomiya,Fukushima	31,000	214
3		Kahoku,Nishimurayama,Yamagata	19,000	163
3		Shichinohe,Kamikita,Aomori	16,000	220
3		Kawanishi,Higashiokitama,Yamagata	16,000	204
3		Yamanobe,Higashimurayama,Yamagata	14,000	173
3		Shirataka,Nishiokitama,Yamagata	14,000	191
3		Kagamiishi,Iwase,Fukushima	13,000	239
3		Naraha,Futaba,Fukushima	990	204
3		Iitate,Soma,Fukushima	50	180
3		Namie,Futaba,Fukushima	0	183
3		Sakuragawa,Ibaraki	43,000	336
3		Yamagata,Yamagata	250,000	169
3		Misawa,Aomori	40,000	208
3		Kasama,Ibaraki	76,000	324
3		Higashinaruse,Ogachi,Akita	2,600	129
3		Noheji,Kamikita,Aomori	13,000	234
3		Kasukabe,Saitama	230,000	385
3		Yurihonjo,Akita	80,000	185
3		Tagajo,Miyagi	64,000	116
3		Tendo,Yamagata	63,000	161
3		Murakami,Niigata	62,000	240
3		Takanezawa,Shioya,Tochigi	30,000	313
3		Kawamata,Date,Fukushima	14,000	189
3		Karumai,Kunohe,Iwate	9,300	168
3		Mikawa,Higashitagawa,Yamagata	7,900	195
3		Kuzumaki,Iwate,Iwate	6,400	139
3		Hachirogata,Minamiakita,Akita	5,900	209
3		Tomioka,Futaba,Fukushima	0	197

The histogram shows frequency distribution of estimated I_s 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.

I_s Exposed-Population Estimates of Each City

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

Show All Data
Show All Data	5- or greater	5+ or greater	6- or greater	6+ or greater
Whole of Japan	50,000	< 1,000
Iwate Prefecture	5,000
Morioka,Iwate	< 1,000
Ofunato,Iwate	2,000
Rikuzentakata,Iwate	< 1,000
Kamaishi,Iwate	< 1,000
Shiwa,Shiwa,Iwate	< 1,000
Yahaba,Shiwa,Iwate	< 1,000
Hiraizumi,Nishiiwai,Iwate	< 1,000
Otsuchi,Kamihei,Iwate	2,000
Miyagi Prefecture	50,000	< 1,000
Ishinomaki,Miyagi	20,000
Kesennuma,Miyagi	10,000
Tome,Miyagi	10,000	< 1,000
Kurihara,Miyagi	< 1,000
Osaki,Miyagi	5,000
Wakuya,Toda,Miyagi	< 1,000
Misato,Toda,Miyagi	1,000
Minamisanriku,Motoyoshi,Miyagi	< 1,000

The summation of the exposed population for each city does not necessarily equal to that of the prefecture or whole of Japan.

Major Historical Damaging Earthquakes in This Region

Year	Region	M	Damage
2003	Off Miyagi	7.1	The intraslab earthquake with a focal depth of 70 km. 174 injured, 2 houses collapsed, 21 partially destroyed.
2003	Northern Miyagi	6.4	The inland crustal earthquake preceded by a foreshock (M5.6) and followed by an aftershock (M5.5) on the same day. 677 injured, 1,276 houses collapsed, 3,809 partially destroyed.
2005	Off Miyagi	7.2	100 injured, 1 house collapsed, 0 partially collapsed. Maximum Is was 6-. A tsunami was observed along the Pacific coast of Tohoku (with a maximum height of 13 cm).
2008	Northern Coast, Iwate	6.8	The intraslab earthquake with the normal fault of the Pacific plate (depth of 108 km). 1 dead, 211 injured, 1 house collapsed, 0 partially destroyed (as of January 2009). Maximum Is was 6-.
2011	Off Sanriku	9.0	2011 off the Pacific coast of Tohoku Earthquake,Mega-thrust earthquake in the subduction zone along the Japan trench from off the middle of Sanriku to off of Ibaraki. 19,418 dead, 2,592 missing, 6,220 injured, 121,809 houses collapsed, 278,496 partially destroyed (as of March 2016; including some damage by aftershocks and induced earthquakes). 90% of fatalities were drownings. Most of the damage including nuclear disaster was caused by a large tsunami (height of about 40 m, according to field investigation). Maximum Is was 7. The damage by ground motion was relatively less significant than that by tsunami.
2011	Off Miyagi	7.2	The intraslab earthquake with the reverse fault of the Pacific plate, occuring around the epicentral area of the 2011 off the Pacific Coast of Tohoku Earthquake. 4 dead, 296 injured, over 36 houses collapsed, over 27 partially collapsed. Maximum Is was 6+.

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.

I_s Distribution of 2% Probability of Exceedance in 50 Years

SI Distribution of 2% Probability of Exceedance in 50 Years

I_s Distribution of Return Period of 50,000-year

R-20260515202221-0134-00001

J-RISQ (http://www.j-risq.bosai.go.jp/)

Updated: 2026-05-15 20:30:17 (UTC+9) Ver.7

Is Distribution Maximum Observed Is:5-

Estimated Is for Major Cities

Is Exposed-Population Estimates of Each City

Major Historical Damaging Earthquakes in This Region

Seismic Hazard Information of J-SHIS

I_s Distribution Maximum Observed I_s:5-

Estimated I_s for Major Cities

I_s Exposed-Population Estimates of Each City