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Home > Weather and Earthquakes > Tsunami Warnings/Advisories, Tsunami Information

Tsunami Information (Estimated Tsunami arrival time and Height)

Tsunami Information
This Tsunami Information was issued in the past
Occurred at 14:46 JST 11 Mar 2011
Region name Sanriku Oki
Depth about 10 km
Magnitude 7.9
Click the map to zoom in

Tsunami Forecast RegionEstimated Tsunami Arrival TimeEstimated Tsunami Height
IWATE PREF.(*1)   3 m
MIYAGI PREF.15:00 JST 11 Mar   6 m
FUKUSHIMA PREF.15:10 JST 11 Mar   3 m
CENTRAL PART OF PACIFIC COAST OF HOKKAIDO15:30 JST 11 Mar   1 m
PACIFIC COAST OF AOMORI PREF.15:30 JST 11 Mar   1 m
IBARAKI PREF.15:30 JST 11 Mar   2 m
KUJUKURI AND SOTOBO AREA, CHIBA PREF.15:20 JST 11 Mar   2 m
IZU ISLANDS15:20 JST 11 Mar   1 m
EASTERN PART OF PACIFIC COAST OF HOKKAIDO15:30 JST 11 Mar 0.5 m
WESTERN PART OF PACIFIC COAST OF HOKKAIDO15:40 JST 11 Mar 0.5 m
JAPAN SEA COAST OF AOMORI PREF.16:10 JST 11 Mar 0.5 m
UCHIBO AREA, CHIBA PREF.15:20 JST 11 Mar 0.5 m
OGASAWARA ISLANDS16:00 JST 11 Mar 0.5 m
SAGAMI BAY AND MIURA PENINSULA15:30 JST 11 Mar 0.5 m
SHIZUOKA PREF.15:30 JST 11 Mar 0.5 m
PACIFIC COAST OF AICHI PREF.16:10 JST 11 Mar 0.5 m
SOUTHERN PART OF MIE PREF.16:00 JST 11 Mar 0.5 m
WAKAYAMA PREF.16:10 JST 11 Mar 0.5 m
TOKUSHIMA PREF.16:40 JST 11 Mar 0.5 m
KOCHI PREF.16:30 JST 11 Mar 0.5 m
MIYAZAKI PREF.17:00 JST 11 Mar 0.5 m
TANEGASHIMA AND YAKUSHIMA AREA17:10 JST 11 Mar 0.5 m
AMAMI ISLANDS AND TOKARA ISLANDS17:10 JST 11 Mar 0.5 m

Tsunami Information NUMBER 1
(Estimated Tsunami Arrival Time and Height)

Issued at 14:50 JST 11 Mar 2011

Estimated Tsunami Arrival Time and Height

Tsunami Forecast RegionEstimated Tsunami Arrival TimeEstimated Tsunami Height
<Tsunami Warning (Major Tsunami)>
IWATE PREF.(*1)   3 m
MIYAGI PREF.15:00 JST 11 Mar   6 m
FUKUSHIMA PREF.15:10 JST 11 Mar   3 m
<Tsunami Warning (Tsunami)>
CENTRAL PART OF PACIFIC COAST OF HOKKAIDO15:30 JST 11 Mar   1 m
PACIFIC COAST OF AOMORI PREF.15:30 JST 11 Mar   1 m
IBARAKI PREF.15:30 JST 11 Mar   2 m
KUJUKURI AND SOTOBO AREA, CHIBA PREF.15:20 JST 11 Mar   2 m
IZU ISLANDS15:20 JST 11 Mar   1 m
<Tsunami Advisory>
EASTERN PART OF PACIFIC COAST OF HOKKAIDO15:30 JST 11 Mar 0.5 m
WESTERN PART OF PACIFIC COAST OF HOKKAIDO15:40 JST 11 Mar 0.5 m
JAPAN SEA COAST OF AOMORI PREF.16:10 JST 11 Mar 0.5 m
UCHIBO AREA, CHIBA PREF.15:20 JST 11 Mar 0.5 m
OGASAWARA ISLANDS16:00 JST 11 Mar 0.5 m
SAGAMI BAY AND MIURA PENINSULA15:30 JST 11 Mar 0.5 m
SHIZUOKA PREF.15:30 JST 11 Mar 0.5 m
PACIFIC COAST OF AICHI PREF.16:10 JST 11 Mar 0.5 m
SOUTHERN PART OF MIE PREF.16:00 JST 11 Mar 0.5 m
WAKAYAMA PREF.16:10 JST 11 Mar 0.5 m
TOKUSHIMA PREF.16:40 JST 11 Mar 0.5 m
KOCHI PREF.16:30 JST 11 Mar 0.5 m
MIYAZAKI PREF.17:00 JST 11 Mar 0.5 m
TANEGASHIMA AND YAKUSHIMA AREA17:10 JST 11 Mar 0.5 m
AMAMI ISLANDS AND TOKARA ISLANDS17:10 JST 11 Mar 0.5 m

*1 mark: Arrival of tsunami inferred.

Please note that the height of actual tsunamis may exceed estimations in some coastal regions.
Although there may be slight sea-level changes in coastal regions other than the above, no tsunami damage is expected in those coastal regions.

Earthquake Information
 Occurred at 14:46 JST 11 Mar 2011
 Region name SANRIKU OKI
 Latitude38.0N
 Longitude142.9E
 Depth about 10 km
 Magnitude 7.9