Overall Orange Earthquake alert in Canada on 28 Oct 2012 03:04 UTC

GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve alerts, information exchange and coordination in the first phase after major sudden-onset disasters.

M 7.7 in Canada on 28 Oct 2012 03:04 UTC

2022-09-16 12:13 message from NTWC

Key information extracted from original GTS message :

Evaluation

A TSUNAMI has been generated that could cause damage along coastlines of all ISLANDS in the state of hawaii
Urgent action should be taken to protect lives and property
A TSUNAMI is a series of long ocean waves
Each individual wave crest can last 5 to 15 minutes or more and extensively flood coastal areas
The danger can continue for many hours after the initial wave as subsequent waves arrive
TSUNAMI wave heights cannot be predicted and the first wave MAY not be the largest
TSUNAMI waves efficiently wrap around islands
All shores are at risk no matter which direction they face
The trough of a TSUNAMI wave MAY temporarily expose the seafloor but the area will quickly flood again
Extremely strong and unusual nearshore currents can accompany a tsunami
Debris picked up and carried by a TSUNAMI amplifies its destructive power
Simultaneous high tides or high surf can significantly increase the TSUNAMI hazard
The estimated arrival time in HAWAII of the first TSUNAMI wave is 1028 pm hst sat 27 oct 2012 messages will be issued hourly or sooner as conditions warrant

Measurements Levels

SOURCE	GAUGE LOCATION	LAT	LON	TIME (UTC)	HEIGHT (m)	PERIOD (min)

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