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.
.
THE ESTIMATED ARRIVAL TIME IN HAWAII OF THE FIRST TSUNAMI WAVE IS 1028 PM HST SAT 27 OCT 2012
USGS said:Tectonic Summary
The October 28th, 2012 (October 27 at the location of the epicenter) M 7.7 earthquake south of Masset, Canada, occurred as a result of oblique-thrust faulting near the plate boundary between the Pacific and North America plates. At the location of this event, the Pacific plate moves approximately north-northwest with respect to the North America plate at a rate of approximately 50 mm/yr.
This earthquake is likely associated with relative motion across the Queen Charlotte fault system offshore of British Columbia, Canada. Studies of tectonics in this region suggest plate motions are taken up by strike slip faulting parallel to the plate boundary, accompanied by lesser amounts of thrust motion to accommodate the oblique nature of the plate motion vector between the two plates with respect to the orientation of the main plate boundary fault structure. . . . .
Ward said he wasn't surprised the tsunami warning was short-lived because the strike-slip movement along the fault doesn't generally trigger tsunamis.
"To trigger a tsunami you need to have a vertical movement of the sea floor, and it's that vertical movement that displaces water and triggers the tsunami," he said. "Because it's sliding across each other, you're not generally moving the water."
A tsunami warning is a message issued by authorities to alert people living in coastal areas that a potentially dangerous tsunami is expected to arrive.
A tsunami warning is typically issued by a national or regional weather or geological agency after a significant earthquake has occurred in the ocean. The agency will use data from seismometers and buoys to determine the location and size of the earthquake, and then use computer models to estimate the potential impact of a resulting tsunami.
The amount of time people have to evacuate after a tsunami warning is issued varies depending on the location and size of the earthquake that triggered the warning. In some cases, people may have only a few minutes to evacuate, while in others, they may have several hours. It is important to follow evacuation instructions and leave as soon as possible.
No, not all tsunami warnings are accurate. While scientists and agencies use the best available data and technology to issue warnings, there is always a possibility of false alarms or missed warnings. It is important to take all tsunami warnings seriously and follow evacuation instructions, regardless of the accuracy of past warnings.
If you receive a tsunami warning, it is important to act quickly and follow evacuation instructions from local authorities. This may include moving to higher ground or inland, avoiding coastal areas, and staying tuned to local news and updates. It is crucial to take all tsunami warnings seriously and prioritize your safety and the safety of those around you.