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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
PACIFIC COAST OF AOMORI PREF.#(*2)  #3 m
IWATE PREF.#(*2)  #6 m
MIYAGI PREF.#(*2)              #10 m or more
FUKUSHIMA PREF.#(*2)  #6 m
IBARAKI PREF.15:30 JST 11 Mar  #4 m
KUJUKURI AND SOTOBO AREA, CHIBA PREF.15:20 JST 11 Mar  #3 m
EASTERN PART OF PACIFIC COAST OF HOKKAIDO15:30 JST 11 Mar  #1 m
CENTRAL PART OF PACIFIC COAST OF HOKKAIDO15:30 JST 11 Mar  #2 m
WESTERN PART OF PACIFIC COAST OF HOKKAIDO15:40 JST 11 Mar  #1 m
JAPAN SEA COAST OF AOMORI PREF.16:10 JST 11 Mar  #1 m
UCHIBO AREA, CHIBA PREF.15:20 JST 11 Mar  #1 m
IZU ISLANDS15:20 JST 11 Mar  #2 m
OGASAWARA ISLANDS16:00 JST 11 Mar  #1 m
#SOUTHERN PART OF JAPAN SEA COAST OF HOKKAIDO#16:40 JST 11 Mar#0.5 m
#MUTSU BAY#16:20 JST 11 Mar#0.5 m
#TOKYO BAY#15:40 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
#ISE BAY AND MIKAWA BAY#16:30 JST 11 Mar#0.5 m
SOUTHERN PART OF MIE PREF.16:00 JST 11 Mar 0.5 m
#SOUTHERN PART OF AWAJI ISLAND#16:50 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
#BUNGO STRAIT COAST OF EHIME PREF.#17:10 JST 11 Mar#0.5 m
KOCHI PREF.16:30 JST 11 Mar 0.5 m
#SETONAIKAI COAST OF OITA PREF.#17:50 JST 11 Mar#0.5 m
#BUNGO STRAIT COAST OF OITA PREF.#17:10 JST 11 Mar#0.5 m
MIYAZAKI PREF.17:00 JST 11 Mar 0.5 m
#EASTERN PART OF KAGOSHIMA PREF.#17:10 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
#WESTERN PART OF KAGOSHIMA PREF.#17:20 JST 11 Mar#0.5 m
#OKINAWA ISLANDS#17:40 JST 11 Mar#0.5 m
#DAITOJIMA AREA#17:10 JST 11 Mar#0.5 m
#MIYAKOJIMA AND YAEYAMA AREA#18:10 JST 11 Mar#0.5 m

Tsunami Information NUMBER 6
(Estimated Tsunami Arrival Time and Height)

Issued at 15:14 JST 11 Mar 2011

High Tide Time and Estimated Tsunami Arrival Time at each place issued at 14:50 JST 11 Mar have been updated.

Estimated Tsunami Arrival Time and Height
Data marked with # have been newly issued or changed.

Tsunami Forecast RegionEstimated Tsunami Arrival TimeEstimated Tsunami Height
<Tsunami Warning (Major Tsunami)>
PACIFIC COAST OF AOMORI PREF.#(*2)  #3 m
IWATE PREF.#(*2)  #6 m
MIYAGI PREF.#(*2)             #10 m or more
FUKUSHIMA PREF.#(*2)  #6 m
IBARAKI PREF.15:30 JST 11 Mar  #4 m
KUJUKURI AND SOTOBO AREA, CHIBA PREF.15:20 JST 11 Mar  #3 m
<Tsunami Warning (Tsunami)>
EASTERN PART OF PACIFIC COAST OF HOKKAIDO15:30 JST 11 Mar  #1 m
CENTRAL PART OF PACIFIC COAST OF HOKKAIDO15:30 JST 11 Mar  #2 m
WESTERN PART OF PACIFIC COAST OF HOKKAIDO15:40 JST 11 Mar  #1 m
JAPAN SEA COAST OF AOMORI PREF.16:10 JST 11 Mar  #1 m
UCHIBO AREA, CHIBA PREF.15:20 JST 11 Mar  #1 m
IZU ISLANDS15:20 JST 11 Mar  #2 m
OGASAWARA ISLANDS16:00 JST 11 Mar  #1 m
<Tsunami Advisory>
#SOUTHERN PART OF JAPAN SEA COAST OF HOKKAIDO#16:40 JST 11 Mar#0.5 m
#MUTSU BAY#16:20 JST 11 Mar#0.5 m
#TOKYO BAY#15:40 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
#ISE BAY AND MIKAWA BAY#16:30 JST 11 Mar#0.5 m
SOUTHERN PART OF MIE PREF.16:00 JST 11 Mar 0.5 m
#SOUTHERN PART OF AWAJI ISLAND#16:50 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
#BUNGO STRAIT COAST OF EHIME PREF.#17:10 JST 11 Mar#0.5 m
KOCHI PREF.16:30 JST 11 Mar 0.5 m
#SETONAIKAI COAST OF OITA PREF.#17:50 JST 11 Mar#0.5 m
#BUNGO STRAIT COAST OF OITA PREF.#17:10 JST 11 Mar#0.5 m
MIYAZAKI PREF.17:00 JST 11 Mar 0.5 m
#EASTERN PART OF KAGOSHIMA PREF.#17:10 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
#WESTERN PART OF KAGOSHIMA PREF.#17:20 JST 11 Mar#0.5 m
#OKINAWA ISLANDS#17:40 JST 11 Mar#0.5 m
#DAITOJIMA AREA#17:10 JST 11 Mar#0.5 m
#MIYAKOJIMA AND YAEYAMA AREA#18:10 JST 11 Mar#0.5 m

*2 mark: Arrival of tsunami confirmed.

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