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
1	11 Mar 2011 11:33	Near East Coast of Honshu, Japan	Warning Supplement Statement	Haw	html, text
1	11 Mar 2011 11:32	Near East Coast of Honshu, Japan	a Widespread Warning is in Effect	Pac	html, text
1	11 Mar 2011 10:31	Near East Coast of Honshu, Japan	Warning Supplement Statement	Haw	html, text
1	11 Mar 2011 10:30	Near East Coast of Honshu, Japan	a Widespread Warning is in Effect	Pac	html, text
1	11 Mar 2011 09:30	Near East Coast of Honshu, Japan	Warning Supplement Statement	Haw	html, text
1	11 Mar 2011 09:30	Near East Coast of Honshu, Japan	a Widespread Warning is in Effect	Pac	html, text
2	11 Mar 2011 09:01	On the South Flank of Kilauea Volcano	Local Information Statement	Haw	html, text
3	11 Mar 2011 08:30	Near East Coast of Honshu, Japan	Warning Supplement Statement	Haw	html, text
3	11 Mar 2011 08:30	Near East Coast of Honshu, Japan	a Widespread Warning is in Effect	Pac	html, text
3	11 Mar 2011 07:31	Near East Coast of Honshu, Japan	Warning Statement	Haw	html, text
3	11 Mar 2011 07:30	Near East Coast of Honshu, Japan	a Widespread Warning is in Effect	Pac	html, text
3	11 Mar 2011 06:44	Near East Coast of Honshu, Japan	Watch Supplement Statement	Haw	html, text
3	11 Mar 2011 06:43	Near East Coast of Honshu, Japan	Expanding Regional Warning Supplement	Pac	html, text
4	11 Mar 2011 05:56	Near East Coast of Honshu, Japan	Watch Statement	Haw	html, text
4	11 Mar 2011 05:55	Near East Coast of Honshu, Japan	Expanding Regional Warning	Pac	html, text