Hawaii spared much of a tsunami after 7.7 B.C. quake

HONOLULU (AP) - Officials in Hawaii canceled a tsunami advisory for the state's coastline early Sunday, paving the way for beaches and harbors to reopen after widespread fears of waves generated from a powerful earthquake off the coast of Canada.
The Pacific Tsunami Warning Center lifted its tsunami advisory Sunday morning just before 4 a.m. local time, three hours after downgrading from a warning and less than six hours after the waves first hit the islands.
Center officials said wave heights were diminishing, though swimmers and boaters should be careful of strong or unusual currents.
The biggest waves - about 5 feet high - appeared to hit Maui. A popular triathlon set for the island was expected to go on as planned, with county lifeguards giving the OK for a 1 mile ocean swim.
There were no immediate reports of damage, though one person died in a fatal crash near a road that was closed because of the threat near Oahu's north shore.
Hawaii Gov. Neil Abercrombie said the state was lucky to avoid more severe surges.
"We're very, very grateful that we can go home tonight counting our blessings," Abercrombie said.
Meanwhile, the National Weather Service canceled tsunami advisories for Canada, Alaska, Washington, Oregon and California.
At first, officials said Hawaii wasn't in any danger of a tsunami after the 7.7-magnitude earthquake, which sparked tsunami warnings for southern Alaska and western Canada.
Later, officials issued a warning for Hawaii as well, saying there had been a change in sea readings. About the same time, a tsunami advisory was issued for a 450-mile stretch of U.S. coast running from north of San Francisco to central Oregon.
A small tsunami created by the quake was barely noticeable in Craig, Alaska, where the first wave or surge was recorded Saturday night.
The warning in Hawaii spurred residents to stock up on essentials at gas stations and grocery stores and sent tourists in beachside hotels to higher floors in their buildings. Bus service into Waikiki was cut off an hour before the first waves, and police in downtown Honolulu shut down a Halloween block party.
Abercrombie proclaimed an emergency, mobilizing extra safety measures.
In Alaska, the wave or surge was recorded at 4 inches, much smaller than forecast, said Jeremy Zidek, a spokesman for the Alaska Department of Homeland Security and Emergency Management. The first wave hit Craig about two hours after the earthquake.
A dispatcher with the Del Norte County Sheriff's said no damage was reported in Crescent City, a tiny fishing community in far Northern California, or in any other locations along the county's coast.
A tsunami warning means an area is likely to be hit by a wave, while an advisory means there may be strong currents, but that widespread inundation is not expected to occur.
The Pacific Tsunami Warning Center lifted its tsunami advisory Sunday morning just before 4 a.m. local time, three hours after downgrading from a warning and less than six hours after the waves first hit the islands.
Center officials said wave heights were diminishing, though swimmers and boaters should be careful of strong or unusual currents.
The biggest waves - about 5 feet high - appeared to hit Maui. A popular triathlon set for the island was expected to go on as planned, with county lifeguards giving the OK for a 1 mile ocean swim.
There were no immediate reports of damage, though one person died in a fatal crash near a road that was closed because of the threat near Oahu's north shore.
Hawaii Gov. Neil Abercrombie said the state was lucky to avoid more severe surges.
"We're very, very grateful that we can go home tonight counting our blessings," Abercrombie said.
Meanwhile, the National Weather Service canceled tsunami advisories for Canada, Alaska, Washington, Oregon and California.
At first, officials said Hawaii wasn't in any danger of a tsunami after the 7.7-magnitude earthquake, which sparked tsunami warnings for southern Alaska and western Canada.
Later, officials issued a warning for Hawaii as well, saying there had been a change in sea readings. About the same time, a tsunami advisory was issued for a 450-mile stretch of U.S. coast running from north of San Francisco to central Oregon.
A small tsunami created by the quake was barely noticeable in Craig, Alaska, where the first wave or surge was recorded Saturday night.
The warning in Hawaii spurred residents to stock up on essentials at gas stations and grocery stores and sent tourists in beachside hotels to higher floors in their buildings. Bus service into Waikiki was cut off an hour before the first waves, and police in downtown Honolulu shut down a Halloween block party.
Abercrombie proclaimed an emergency, mobilizing extra safety measures.
In Alaska, the wave or surge was recorded at 4 inches, much smaller than forecast, said Jeremy Zidek, a spokesman for the Alaska Department of Homeland Security and Emergency Management. The first wave hit Craig about two hours after the earthquake.
A dispatcher with the Del Norte County Sheriff's said no damage was reported in Crescent City, a tiny fishing community in far Northern California, or in any other locations along the county's coast.
A tsunami warning means an area is likely to be hit by a wave, while an advisory means there may be strong currents, but that widespread inundation is not expected to occur.
im bored talk to me
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I must be the only person who thinks it's idiotic that the people in the photo "are waiting for the tsunami to arrive"?!?
Keep CRYING WOLF KOMO....Sensationalism will cost you your credibility...err, continue to mean you have no credibility.
 @bagsofdirt yeah, because KOMO was the only one who reported a possible Tsunami. Not CNN, nor Fox News, nor NBC, nor Google, nor Yahoo, not KING, nor KIRO ... Nope, only KOMO ...... Ya know, I have an idea, how about you stop trolling, crawl out from under your bridge and join the rest of the population in making a contribution to society.
What, no mention of where on the West coast of Canada the earthquake originated ?
 @joefuss 'B.C', right in the title.
I wonder if the location of the quake will affect the Pacific coast faults??
I understand the need to warn people. I live on the coast in WA. But every time they issue an advisory or warning and nothing comes of it people lose faith in the system. It's crying wolf and eventually no one will pay attention at all. It is almost like a joke already. There needs to be a better way to assess the incoming danger. People simply don't believe (for the most part) the warnings going out after 2 or 3 have been issued and we have an increase in waves of 8 to 10 inches or less. It's a clam dig weekend and no one talked about being cautious or avoiding the beach at all.Â
 @LMaxfield That's because there was no warning or advisory for the WA coast. They knew that the tsunami generated from this earthquake would not affect WA in any significant way.
I was watching the news late last night as this broke.Â
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I do not mean to be obtuse, but they never did or have explained why the "worst" damage was expected to be in HAwaii, thousands of miles away, while the coast of Canada, directly nerxt to where the earthquake happened was not considered in as much danger (at least from the way they were reporting, carrying on & on about Hawaii's emergency response).Â
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Why would it be so much worse of a wave that dar away - woul,dn't the distance disapate the wave? Just thought someone on here might know the answer - I do not mean to be stupid.
 @LocalLady you are NOT stupid! Never have been, never will be!
Take Care..
2 mos later..lol.
 @LocalLady Think of it sort of like a gun - why would something a hundred yards away be hurt more than the person right behind it? Because the bullet is *directed* in one direction. Similarly, depending on the topography of the seafloor and the exact movement of the seafloor, the wave can be directed, channeled, dispersed, or concentrated in different directions.
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Consider three "simple" cases:
A flat seafloor, where a long fault ruptured and just slips sideways; no water is really displaced, and no tsunami at all.
On a flat seafloor, where a long north-south fault drops sharply on the west side, and lifts on the east-side. water always flows "downhill", so the tsunami will head westward.
OTOH, if the west side of the fault uplifts sharply, the "downhill" side is to the east, and the tsunami will head east.
@LocalLady
@LocalLady You raised good questions. Reasonably, one would think that an ocean wave would lose momentum over great distances, which a tsunami does eventually, but over a greater distance than other 'normal' sea waves. Waves that are created by wind maintain their height and strength as long as they are being pushed along by wind currents, like in a hurricane that forces a storm surge of waves onto shore, flooding coastal cities.
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A tsunami is caused by a displacement of a mass of water from a sudden earth shift: either a subduction earthquake or landslide. The wave is not a surface wave, but a massive wall of water from seafloor to surface generated by an equally massive event. The wall of water moves in unison from the sea floor to the surface, building momentum, then as it nears a beach and the distance from the surface to the seafloor becomes shallower, the wave piles onto itself increasing its' wave height.Â
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The type of earth displacement also has an effect as to whether a tsunami will form: A sudden uplift or drop like that created in a subduction fault earthquake where one plate is pushing under another plate will likely create a tsunami, whereas a strike slip like the San Andreas fault where the plates are sliding past eachother is less likely.
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This is a 27 second video that focuses on what happened in Sumatra along the Andaman subduction fault in 2004 - our Cascadia subduction zone is very similar to the Andaman:
http://www.youtube.com/watch?v=bG37DEAb3Bc
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In 1958, the Lituya Bay tsunami was created by a landslide that was triggered by an earthquake:
http://en.wikipedia.org/wiki/1958_Lituya_Bay_megatsunami
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Hope that this answered some questions. Cool that you're interested to know about it.
@Smokin Bear:Â
Thank you SO much for all the information! I have always liked learning about things - I always thought the coolest job in the world would have been to be a "professional student", to go to school & learn about EVERYTHING the rest of my life. Alas, I was never able to do that, so I read alot (LOVE National Geographic, Smithsonian used to be a favorite until the "revised" it & got rid of one of my favorite parts - The Last Page"), I truly miss LIFE magazine. I usually read at least 2 newspapers a day online, as well as checking stories on at least 2 local news sites and the BBC (for a different point of view).
 @LocalLady if you want to see what a tsunami can do look at the alaska one that did major damage in both Alaska and i believe Oregon. Also, look what happened in the Indonesia one. you had damage all the way in Somalia, which was 2800 miles away. it all depends on the sea floor make up and the direction of the major waves.
 @LocalLady Tsunamis can gain speed and power as they move across the ocean.
Excellent earthquake drill opportunity. Real quake of significant size, real sensor readings and real-time predictions, alerts, etc. They should have alerts go out to the whole PNW coastal area to just say "an earthquake just happened off teh BC coast, and a tsunami is not predicted for this area, are you ready for one if it WERE to happen closer? Do you know where to go?" Just to raise awareness, and get people out of their bubble to think about the possibilities.
Well that explains why my little dog was shaking all night. I think it's cool how animals can sense these things but why can't we?
 @alildifferent I've had several times where I woke up suddenly, or otherwise became aware of something about to happen, precisely two seconds before it happened. I wouldn't have been able to tell you what it would be, but in three of those cases, it was an earthquake, and in one more it was a power outage. I can't really explain how it happened, but I'm convinced that we do have the ability to tell that something significant is about to happen - just perhaps not far enough in advance to be able to do anything about it.
@alildifferent - animals can hear sounds that we cannot. We would probably be better prepared by watching the animals. :)
Yeah I too thought I felt the earth move.....but I was reading this story at the time, and thought perhaps it was Obama's reaction to this news....
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http://politics.blogs.foxnews.com/2012/10/27/des-moines-register-endorses-romney/
@raydawg Waaaaaaaaaay off topic. If you want to spew, go start a blog.
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 Am very sick of comments that have no connection to actual news stories.
 @raydawg  LOL... tea party member
This comment has been deleted
 @raydawg Obama Derangement Syndrome. Â
 @raydawg  @Andrew Bush I wish we could still hit the thump down button.
What I DON'T understand is why I am reading a WASHINGTON State site (because I've heard about the quake and want to find out if there has been any Washington State damage), and there is no mention of WASHINGTON STATE consequences!So...there were potential consequences from B.C. to B.C. (Baha, Cal., B.C., Alaska, Oregon, California, Hi....) and our state magically had none! Is this an OVERSIGHT of the article? Or  is there some geographical reason our state was protected????Don't you expect the news folk to at least include one sentence about why Washington should not have any concerns?Â
 @Nicki Blake Chafetz Also, this is an AP article, not something KOMO wrote...Â
 @Nicki Blake Chafetz The way the earthquake happened, scientists were able to tell that there was never any danger to the WA coast. http://www.tsunami.gov/ is a good resource for that sort of thing, they mentioned WA in every update, that we were not in danger. The tsunami was only a few inches on our coasts.Â
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I wouldn't really rely on KOMOnews.com for up to the minute accurate coverage of something like this. There are better resources.Â
 @Nicki Blake Chafetz  We just gossip a lot  : )
Look at those people in the photo who rushed to the waters edge after the warning. Â Doh! Â
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Their families members should invest in life insurance because its only a matter of time before the next spectacle they rush out to see gets em. Â
@Andrew Bush - Yes, it's crazy. My dad was in Crescent City when the Good Friday quake happened in Alaska that produced the tsunami that hit the West Coast. He headed for high ground but some people actually went to the beach to watch it...
 @Andrew Bush Is that you in blue?
 @raydawg  Put down your misspelled tea party sign when you say that.
I felt the ground move last night, but maybe I'm just sensitive. I've been through multiple earthquakes, inluding the Loma Prieta where I was at the Oakland MacArthur BART station and the train I was on derailed. I live on Olympic Peninsula now, and think this area would feel aftershocks more readily from a BC quake. Funny, Loma Prieta hit in October of 1989, during the world series - A's and Giants. Someone from Minneapolis that I worked with mentioned on the phone to me before the quake that they hoped we had an earthquake, they were a Twins fan, angry that we had two teams in the World Series. I never confronted the guy about his comment.Â
 @Kathy Otis I lived in the Bay Area for most of my life (was in Foster City - eg. City of Landfill - when Loma Prieta hit), and I remember distinctly feeling the Nisqually quake in, what was it, 2000? 2001? when I was staying over at my father's apartment in Fremont. We all thought it was a local quake, so we were really surprised to find out it had been centered in Washington.
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I wouldn't be surprised to find that people down in the Bay Area felt this quake as well. It's about the right distance for seismic waves to "bounce" through the mantle.
KOMO, are you really doing anyone a service, leaving this headline up long after the warning for Hawaii has been lifted?
I appreciate the warnings going out, but I hope someday they can estimate the severity of the Tsunami better.
 @Funky-Munky For every one of these warnings, they have a new data point that lets them tune and adjust their process. Every point of data makes for more accurate and more meaningful warnings in the future.
So what time did it hit? It's not like all of us could've felt it.
I thought it was McChord, you know, low flying aircraft. It was just just two 5 to 8-second low rumbles. I didn't really think anything of it. And then my friend on her honeymoon in Hawaii just called said they evacuated her hotel.
Hugs quake.... 4 inch tsunami? Saw the alert of the 7.7 and looked on usgs.gov for the tsunami alert and saw none... now I know why. However, good reminder Seattle! Are you ready?
A sign of what's to come.. it's a matter of when, not if, a quake of that magnitude or larger strikes our area. Everyone needs to be prepared.
 @MossMan As a Northridge quake survivor, I have to say you're spot on. Even I have grown lazy and don't have my bottled water up to date. A good reminder, and a hope that everyone's ok.
@WhatRJDid @MossMan - Wow. I remember watching the news after the Northridge quake. Glad you survived. That was a nasty shaker and an odd fault orientation - I might be wrong but I think it ran diagonally and perpendicular to the San Andreas and was part of a previously unknown spiderweb of faults and fractures in the area.Â
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I'm reading a great book about the Cascadia Subduction Zone by Jerry Thompson. Essentially, nowhere on earth is 'safe' - we're either going to be squished in an earthquake, mushed in a tsunami, incinerated by a volcano, gnawed on by wildlife, washed away in a hurricane, mangled by a tornado, etc.
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So why not make the best of it and be good to each other? :-)
 @WhatRJDid  @MossMan water barrels and a good filter
I was wondering if there had been a quake - I was working on my lathe around that time, heard a rattling noise. I thought it was my dog trying to get in the pet door - but when I checked he wasn't there.
Yeah, time to check on the emergency supplies...
we're lucky it didn't hit a few hundred miles further south.
I've been putting it off too long. Time to get that disaster kit made up.Â
Wow, lucky it hit so close to shore and with an island in its way.