2008 Iwate-Miyagi Nairiku Earthquake - Seismic Intensity

Seismic Intensity

seismic intensity (震度, Shindo?) represents the strength of ground motion. JMA uses the scales of 0 to 7: 0, 1, 2, 3, 4, weak/strong 5, weak/strong 6, 7.

Prefecture Seismic intensities
Iwate 6+ 6- 5+ 5- 4 3 2
Miyagi 6+ 6- 5+ 5- 4 3
Akita 5+ 5- 4 3 2
Yamagata 5- 4 3 2
Fukushima 5- 4 3 2 1
Aomori 4 3 2 1
Ibaraki 4 3 2
Tochigi 4 3 2 1
Niigata 4 3 2 1
Hokkaidō 3 2 1
Gunma 3 2 1
Saitama 3 2 1
Chiba 3 2 1
Tokyo 3 2 1
Kanagawa 3 2 1
Yamanashi 3 2 1
Ishikawa 2 1
Nagano 2 1
Shizuoka 2 1
Aichi 1

Tremors were felt across a large area.

Strongly shaken areas included:

Strong 6:

Iwate Pref. - City of Ōshū (奥州市).
Miyagi Pref. - City of Kurihara (栗原市).

Weak 6:

Iwate Pref. - City of Ōshū (奥州市).
Miyagi Pref. - Cities of Kurihara (栗原市) and Ōsaki (大崎市).

Strong 5:

Iwate Pref. - Cities of Ōshū (奥州市), Kitakami (北上市), Ichinoseki (一関市), Towns of Kanegasaki (金ケ崎町) and Hiraizumi (平泉町).
Miyagi Pref. - Cities of Kurihara (栗原市), Ōsaki (大崎市), Sendai (仙台市), Tome (登米市), Natori (名取市), Towns of Misato (美里町), Wakuya (涌谷町), Kami (加美町), and Rifu (利府町).
Akita Pref. - City of Yuzawa (湯沢市), and Village of Higashinaruse (東成瀬村).

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