Friday, March 11, 2011

Japanese Earthquake and Tsunami

The Pacific Tsunami Warning Centre issued Bulletin number 1 for a Tsunami Watch at 0555 UTC 11 March 2011 for Japan much of the western and mid pacific are nearby areas. This was due to an earthquake at 0546Z 11 MAR 2011 near the east coast of the Japanese island of Honshu, Japan, then assessed at magnitude 7.9. This was expanded with bulletin 2 at 0643Z, with the magnitude of the earthquake reassessed as 8.8. At 0730Z bulletin 3 upgraded this to a widespread warning with gauge reports of up to 2.79m at HOKKAIDO. Up to now the latest bulletin is number 7, warning of possible damage along coastlines of all islands of Hawaii.

The Indian Ocean Tsunami Warning System relayed the initial bulletin at 05:56:02 GMT. The PTWC web site is responding to web page requests with no significant delays. For an overview of how these systems work, see my talk to the East Mediterranean Tsunami Warning Centre in Istanbul.


Time (UTC) Region Type To: Details
111 Mar 2011 11:33Near East Coast of Honshu, JapanWarning Supplement StatementHawhtml, text
111 Mar 2011 11:32Near East Coast of Honshu, Japan a Widespread Warning is in EffectPachtml, text
111 Mar 2011 10:31Near East Coast of Honshu, JapanWarning Supplement StatementHawhtml, text
111 Mar 2011 10:30Near East Coast of Honshu, Japan a Widespread Warning is in EffectPachtml, text
111 Mar 2011 09:30Near East Coast of Honshu, JapanWarning Supplement StatementHawhtml, text
111 Mar 2011 09:30Near East Coast of Honshu, Japan a Widespread Warning is in EffectPachtml, text
211 Mar 2011 09:01On the South Flank of Kilauea VolcanoLocal Information StatementHawhtml, text
311 Mar 2011 08:30Near East Coast of Honshu, JapanWarning Supplement StatementHawhtml, text
311 Mar 2011 08:30Near East Coast of Honshu, Japan a Widespread Warning is in EffectPachtml, text
311 Mar 2011 07:31Near East Coast of Honshu, JapanWarning StatementHawhtml, text
311 Mar 2011 07:30Near East Coast of Honshu, Japan a Widespread Warning is in EffectPachtml, text
311 Mar 2011 06:44Near East Coast of Honshu, JapanWatch Supplement StatementHawhtml, text
311 Mar 2011 06:43Near East Coast of Honshu, JapanExpanding Regional Warning SupplementPachtml, text
411 Mar 2011 05:56Near East Coast of Honshu, JapanWatch StatementHawhtml, text
411 Mar 2011 05:55Near East Coast of Honshu, JapanExpanding Regional WarningPachtml, text

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