7.7 Earthquake off west coast of Canada, Tsunami warnings issued

An earthquake with magnitude 7.7 occurred near Prince Rupert, BC, Canada at 03:04:10.56 UTC on Oct 28, 2012. (This event has been reviewed by a seismologist.)

Map below:

Open map in new window  Epicenter

BULLETIN
PUBLIC TSUNAMI MESSAGE NUMBER 6
NWS WEST COAST/ALASKA TSUNAMI WARNING CENTER PALMER AK
1044 PM PDT SAT OCT 27 2012

THE ADVISORY HAS BEEN EXPANDED TO INCLUDE NORTHERN CALIFORNIA AND
SOUTHERN OREGON.

...THE TSUNAMI WARNING CONTINUES IN EFFECT FOR THE COASTAL
   AREAS OF BRITISH COLUMBIA AND ALASKA FROM THE NORTH TIP OF
   VANCOUVER ISLAND BRITISH COLUMBIA TO CAPE DECISION
   ALASKA/LOCATED 85 MILES SE OF SITKA/...

...THE TSUNAMI ADVISORY IS MODIFIED TO INCLUDE THE COASTAL
   AREAS OF CALIFORNIA AND OREGON FROM GUALALA POINT
   CALIFORNIA/LOCATED 80 MILES NW OF SAN FRANCISCO/ TO
   DOUGLAS-LANE COUNTY LINE OREGON/10 MILES SW OF FLORENCE/...

...THE TSUNAMI ADVISORY CONTINUES IN EFFECT FOR THE COASTAL
   AREAS OF BRITISH COLUMBIA FROM THE WASHINGTON-BRITISH
   COLUMBIA BORDER TO THE NORTH TIP OF VANCOUVER ISLAND
   BRITISH COLUMBIA...

...THIS MESSAGE IS INFORMATION ONLY FOR COASTAL AREAS OF
   CALIFORNIA FROM THE CALIFORNIA-MEXICO BORDER TO GUALALA
   POINT CALIFORNIA/LOCATED 80 MILES NW OF SAN FRANCISCO/...

...THIS MESSAGE IS INFORMATION ONLY FOR COASTAL AREAS OF
   OREGON AND WASHINGTON FROM DOUGLAS-LANE COUNTY LINE
   OREGON/10 MILES SW OF FLORENCE/ TO THE WASHINGTON-BRITISH
   COLUMBIA BORDER...

...THIS MESSAGE IS INFORMATION ONLY FOR COASTAL AREAS OF
   ALASKA FROM CAPE DECISION ALASKA/LOCATED 85 MILES SE OF
   SITKA/ TO ATTU ALASKA...

And also:

BULLETIN
TSUNAMI MESSAGE NUMBER   3
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
709 PM HST SAT OCT 27 2012

TO - CIVIL DEFENSE IN THE STATE OF HAWAII

SUBJECT - TSUNAMI WARNING

A TSUNAMI WARNING IS ISSUED FOR THE STATE OF HAWAII EFFECTIVE AT
0709 PM HST.  THIS UPGRADE IS DUE TO THE SEA LEVEL READINGS
RECEIVED AND THE RESULTING CHANGE IN THE HAWAII TSUNAMI
FORECAST.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

   ORIGIN TIME - 0504 PM HST 27 OCT 2012
   COORDINATES - 52.8 NORTH  131.8 WEST
   LOCATION    - QUEEN CHARLOTTE ISLANDS REGION
   MAGNITUDE   - 7.7  MOMENT

MEASUREMENTS OR REPORTS OF TSUNAMI WAVE ACTIVITY

 GAUGE LOCATION        LAT   LON    TIME        AMPL         PER
 -------------------  ----- ------  -----  ---------------  -----
 DART 46404           45.9N 128.8W  0417Z   0.05M /  0.2FT  20MIN
 LANGARA POINT BC     54.2N 133.1W  0424Z   0.20M /  0.7FT  26MIN
 DART 46419           48.8N 129.6W  0346Z   0.06M /  0.2FT  12MIN

 LAT  - LATITUDE (N-NORTH, S-SOUTH)
 LON  - LONGITUDE (E-EAST, W-WEST)
 TIME - TIME OF THE MEASUREMENT (Z IS UTC IS GREENWICH TIME)
 AMPL - TSUNAMI AMPLITUDE MEASURED RELATIVE TO NORMAL SEA LEVEL.
        IT IS ...NOT... CREST-TO-TROUGH WAVE HEIGHT.
        VALUES ARE GIVEN IN BOTH METERS(M) AND FEET(FT).
 PER  - PERIOD OF TIME IN MINUTES(MIN) FROM ONE WAVE TO THE NEXT.

 NOTE - DART MEASUREMENTS ARE FROM THE DEEP OCEAN AND THEY
        ARE GENERALLY MUCH SMALLER THAN WOULD BE COASTAL
         MEASUREMENTS AT SIMILAR LOCATIONS.

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 2012MESSAGES WILL BE ISSUED HOURLY OR SOONER AS CONDITIONS WARRANT.
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49 thoughts on “7.7 Earthquake off west coast of Canada, Tsunami warnings issued

  1. What was I saying about earthquakes and volcanic eruptions on another thread. Hope Hawaii goes unscathed.

  2. On news this evening here in Aus, a tsunami of 2metres is expected in about an hour. Lets hope it’s not that severe.

  3. All I know is there is no damage, but many people have noted that there have been waves, shimmies and jolts. Highest wave noted was 45cm. Time wise 8pm to about 8:15pm British Columbia time. Since it is dark many can’t see if there was damage to the area, where it happened. They have noted that there has been a change in sea levels and the currents have changed, but that was the latest update on the news here in Alberta where I live.

  4. Past year :

    http://tallbloke.wordpress.com/2012/03/20/michele-casati-acapulco-earthquake-successfully-predicted/

    Now
    Read dates October 2012
    I write September 24, 2012

    http://translate.google.it/translate?hl=it&sl=it&tl=en&u=http%3A%2F%2Fdaltonsminima.altervista.org%2F%3Fp%3D22873

    October 2012
    13-14 Projection Input new moon lunar perigee of 15 and 17
    but…
    No big earthquake because geomagnetic storm ( solar wind > 400Km/s.)

    27-28 Input alignment Mars-Earth-Jupiter-Uranus alignment input & 29-30 Earth-Venus
    solar wind < 400km/s
    Big earthquake !

  5. 000
    WEHW40 PHEB 280804
    TSUHWX
    HIZ001>003-005>009-012>014-016>021-023>026-281004-
    /O.CON.PHEB.TS.W.0001.000000T0000Z-000000T0000Z/

    BULLETIN
    TSUNAMI MESSAGE NUMBER 6
    NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
    1003 PM HST SAT OCT 27 2012

    TO – CIVIL DEFENSE IN THE STATE OF HAWAII

    SUBJECT – TSUNAMI WARNING SUPPLEMENT

    A TSUNAMI WARNING CONTINUES IN EFFECT FOR THE STATE OF HAWAII.

    AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

    ORIGIN TIME – 0504 PM HST 27 OCT 2012
    COORDINATES – 52.8 NORTH 131.8 WEST
    LOCATION – QUEEN CHARLOTTE ISLANDS REGION
    MAGNITUDE – 7.7 MOMENT

    MEASUREMENTS OR REPORTS OF TSUNAMI WAVE ACTIVITY

    GAUGE LOCATION LAT LON TIME AMPL PER
    ——————- —– —— —– ————— —–
    SITKA AK 57.1N 135.3W 0542Z 0.09M / 0.3FT 30MIN
    CRESCENT CITY CA 41.7N 124.2W 0736Z 0.42M / 1.4FT 24MIN
    DART 46419 48.8N 129.6W 0344Z 0.07M / 0.2FT 20MIN
    ARENA COVE CA 38.9N 123.7W 0633Z 0.32M / 1.1FT 06MIN
    WINTER HARBOUR BC 50.5N 128.0W 0413Z 0.23M / 0.8FT 30MIN
    DART 46404 45.9N 128.8W 0417Z 0.05M / 0.2FT 20MIN
    LANGARA POINT BC 54.2N 133.1W 0424Z 0.20M / 0.7FT 26MIN

    LAT – LATITUDE (N-NORTH, S-SOUTH)
    LON – LONGITUDE (E-EAST, W-WEST)
    TIME – TIME OF THE MEASUREMENT (Z IS UTC IS GREENWICH TIME)
    AMPL – TSUNAMI AMPLITUDE MEASURED RELATIVE TO NORMAL SEA LEVEL.
    IT IS …NOT… CREST-TO-TROUGH WAVE HEIGHT.
    VALUES ARE GIVEN IN BOTH METERS(M) AND FEET(FT).
    PER – PERIOD OF TIME IN MINUTES(MIN) FROM ONE WAVE TO THE NEXT.

    NOTE – DART MEASUREMENTS ARE FROM THE DEEP OCEAN AND THEY
    ARE GENERALLY MUCH SMALLER THAN WOULD BE COASTAL
    MEASUREMENTS AT SIMILAR LOCATIONS.

    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

  6. According to Sky news, The first waves of around one meter are hitting Hawaii now, the live images are looking good so-far to pass with very little damage.

  7. Live tide guages … Hawaii tide gauge site

    Nawiliwili guage on Kauai is northenmost guage (but on East shore so levels smaller) and shows 5 waves so far – 3rd wave was peak as expected …. max peak appx +.65 meter with -.22 trough …

    Kahului Harbor shows larger – appx +1.25 meter peak and -0.25 trough through two main waves (with possibly two minor – peak still growing

  8. I’m in British Columbia on mid-Vancouver Island so this caused some initial concern when I saw the alert.

    However, the alert was for Northern Vancouver Island to parts of Alaska. Here at least, nothing of note.

  9. Commentary and Background – I posted this some time ago.

    The Cascadia Fault offshore Vancouver Island has experienced 13 great earthquakes in the last 6000 years, or one every 500 years on average. The last big one occurred 311 years ago in 1700, so another could happen at any time. Low-lying areas are particularly vulnerable and we will have less than one hour’s warning between the seismic event and the tsunami.

    I would not assume that our current tsunami warning system is capable of such a rapid response.

    p.s.
    Earthquakes tend to happen in bunches.

    _____________________________________________________________

    The M9 Cascadia Megathrust Earthquake of January 26, 1700

    http://earthquakescanada.nrcan.gc.ca/histor/15-19th-eme/1700/1700-eng.php

    At 9PM on January 26, 1700 one of the world’s largest earthquakes occurred along the west coast of North America. The undersea Cascadia thrust fault ruptured along a 1000 km length, from mid Vancouver Island to northern California in a great earthquake, producing tremendous shaking and a huge tsunami that swept across the Pacific. The Cascadia fault is the boundary between two of the Earth’s tectonic plates: the smaller offshore Juan de Fuca plate that is sliding under the much larger North American plate.

    The earthquake shaking collapsed houses of the Cowichan people on Vancouver Island and caused numerous landslides. The shaking was so violent that people could not stand and so prolonged that it made them sick. On the west coast of Vancouver Island, the tsunami completely destroyed the winter village of the Pachena Bay people with no survivors. These events are recorded in the oral traditions of the First Nations people on Vancouver Island. The tsunami swept across the Pacific also causing destruction along the Pacific coast of Japan. It is the accurate descriptions of the tsunami and the accurate time keeping by the Japanese that allows us to confidently know the size and exact time of this great earthquake.

    The earthquake also left unmistakeable signatures in the geological record as the outer coastal regions subsided and drowned coastal marshlands and forests that were subsequently covered with younger sediments. The recognition of definitive signatures in the geological record tells us the January 26, 1700 event was not a unique event, but has repeated many times at irregular intervals of hundreds of years. Geological evidence indicates that 13 great earthquakes have occurred in the last 6000 years.

    We now know that a similar offshore event will happen sometime in the future and that it represents a considerable hazard to those who live in southwest B.C. However, because the fault is offshore, it is not the greatest earthquake hazard faced by major west coast cities. In the interval between great earthquakes, the tectonic plates become stuck together, yet continue to move towards each other. This causes tremendous strain and deformation of the Earth’s crust in the coastal region and causes ongoing earthquake activity. This is the situation that we are in now. Some onshore earthquakes can be quite large (there have been four magnitude 7+ earthquakes in the past 130 years in southwest B.C. and northern Washington State). Because these inland earthquakes can be much closer to our urban areas and occur more frequently, they represent the greatest earthquake hazard. An inland magnitude 6.9 earthquake in 1995 in a similar geological setting beneath Kobe, Japan caused in excess of $200 billion damage.

  10. Checked Youtube for any videos from Hawaii. All I found were 3 videos which, in no particular order, blamed UFO’s, God and President Obama for causing the initial BC earthquake. Now, I’m no expert in religion, ufology or US politics, but I feel there may well be other reasons why this quake occurred ? :)

  11. Warwick Wakefield on October 27, 2012 at 11:49 pm
    They should give British Columbia back to the Columbians

    MODS:
    I see no place for this comment in this thread. I suggest it be removed. Thank you.

  12. AndyG55 says:
    October 28, 2012 at 1:47 am

    Oh know.. global warming sea level rise !!!
    ________________
    So true!
    Gaiea (some of the less- enlightened might say God, or god) has decided that we haven’t had near enough guilt trips laid on us, so figures to give us a reason for more guilt.

    No, it isn’t just Bush and the Koch brothers fault, it’s also all your fault. Take your punishment.

  13. MODS: This one should probably too. It’s implying that weather forecasters are linking the earthquake to to hurricane Sandy – which the linked article does not do. As a westherman himself, Anthony probably won’t appreciate such comments and likely would have struck them down had he been able to be here.

  14. David Borth on October 28, 2012 at 9:06 am
    Your comment is awaiting moderation.
    Trying this again and actually including a copy of the offending post

    Chris B on October 27, 2012 at 11:59 pm
    Apparently Hurricane Sandy has been linked to the same area as the quake that hit near Haida Gwaii.

    http://www.theweathernetwork.com/news/storm_watch_stories3&stormfile=low_pressure_on_Canada_s_west_coast_may_influence_Hurricane_Sandy_s_track_26_10_2012&eccode=WWCABC0023B&warningdisplay=noec&warningtype=sw?ref=stormwatch_city

    MODS: This one should probably too. It’s implying that weather forecasters are linking the earthquake to to hurricane Sandy – which the linked article does not do. As a weatherman himself, Anthony probably won’t appreciate such comments and likely would have struck them down had he been able to be here.

  15. Belize used to be called British Honduras. I have lived in British Columbia for 45 years and have never heard “British Columbia should be given back to Columbia”. Obviously it’s a joke and I find no offense from it, especially since Columbia refers to a person and not to a nation. The Columbia river runs through much of B.C.
    British Columbia is named after the great ocean god that sailed the ocean blue in 1492, or something like that :-)

  16. David Borth says:
    October 28, 2012 at 9:06 am

    MODS: This one should probably too. It’s implying that weather forecasters are linking the earthquake to to hurricane Sandy – which the linked article does not do. As a westherman himself, Anthony probably won’t appreciate such comments and likely would have struck them down had he been able to be here.
    _____________________
    David,
    The thing is, the pages of WUWT are filled with examples of people trying to link any and all events such as earthquakes, to CAGCD. We know it’s a ridiculous claim, but there propagandists out there making the claims, nevertheless. Might as well have some fun at their expense, eh?

  17. I am in downtown Vancouver this weekend, overlooking the ocean, felt nothing and the seal levels are all normal.

  18. I am at the top of Pikes Peak, CO sitting in a Zodiac….waiting….got my fishing poles and crab pot….waiting….stand by…. having more coffee…waiting…

  19. Warwick Wakefield says:
    “They should give British Columbia back to the Columbians.”
    Does that go for DC too?
    The US might be better off without it.

  20. Any chance this 7.7 Earthquake was result of Mann’s Lawyer doing an epic Face-Palm after finding out his client did not receive the Nobel Peace Prize?

  21. garymount says:
    October 28, 2012 at 9:57 am
    Belize used to be called British Honduras. I have lived in British Columbia for 45 years and have never heard “British Columbia should be given back to Columbia”. Obviously it’s a joke and I find no offense from it, especially since Columbia refers to a person and not to a nation. The Columbia river runs through much of B.C.
    British Columbia is named after the great ocean god that sailed the ocean blue in 1492, or something like that :-)

    Point taken that its a joke. I kind of guessed it was an attempt at humour. I am a BC resident as well. I just don’t get it. Perhaps someone could explain it to me.

  22. Luther Wu says:
    October 28, 2012 at 10:06

    The thing is, the pages of WUWT are filled with examples of people trying to link any and all events such as earthquakes, to CAGCD. We know it’s a ridiculous claim, but there propagandists out there making the claims, nevertheless. Might as well have some fun at their expense, eh?
    ________________________________

    Luther, I agree with your comment about warmists making ridiculous linkages but lets be careful we don’t imply those linkages are being made by Canadian meteorologists.

    Unless you open the Weather Network link provided by Chris B, readers of his post might be left with the impression that the earthquake was indeed being linked to Hurricane Sandy – by the Canadian Weather Network. The Weather Network’s team of meteorologists certainly don’t link earthquakes and hurricanes and they are likely not fans of CAGW either.

    I suggest we need to help out in protecting the credibility of meteorologists (and this blog) at all times.

    Sorry Mods (and Anthony), the full moon must be making me a little owly and defensive about BC and the Canadian Weather Network.

  23. David Borth says:
    October 28, 2012 at 1:18 pm

    I have lived in British Columbia for 45 years and have never heard “British Columbia should be given back to Columbia”… Point taken that its a joke… I just don’t get it. Perhaps someone could explain it to me.
    ________________________
    Small wonder that you haven’t heard of the Columbians. After all, they’ve been extinct, as a people, for some time. What did ‘em in was their tattoo- cult penchant for communal sharing of tattoo needles fashioned from discarded WWII hypodermics and filled with lipstick melted in some mysterious tribal concoction, with which they covered themselves in often bizarre, yet colorful designs. It’s said that the tribe had all been caught up in overlaying the graphic landscapes of their festooned selves with the latest trendy color, Lime Jello Sparkle, there towards the end.
    Some have speculated that the Columbians were the original subjects of some dastardly government release of the vile AIDS disease, which original intent was to rid the world of tattoo parlors and such, before things got out of hand.

    Some of their design influence has been preserved in modern tattoo culture and has been spotted as far away as East Orange, New Jersey.

  24. “bushbunny says:
    October 28, 2012 at 12:42 am”

    I should have been clearer, the newscast was in Aus, don’t recall what channel, for a tsunami warning for Hawaii. Aussie newscasts with any thing to do with events like this are always laced with alarm.

  25. This had been my focus over the weekend (what little time I had), as it potentially affected friends and family in the area and in the tsunami warning zones. Lots of aftershocks, some as high as 6.5.

  26. Warwick Wakefield says:
    October 27, 2012 at 11:49 pm

    They should give British Columbia back to the Columbians

    Nope – we British are keeping it. We now have GM Erythroxylum utilising Pine DNA. Loves the near Arctic, grows to 100 feet in sub zero with no sunlight for half the year. Those New Yorkers won’t know what’s hit them.

  27. garymount says:

    October 29, 2012 at 7:27 am

    @highflight56433

    http://www.timescolonist.com/technology/Comment+help+stop+unnecessary+sewage+treatment/7336061/story.html

    https://sites.google.com/site/sewageplantsvictoria/

    “Do some research before accepting propaganda.”

    I did, that is why you have no citation to counter those newspaper articles. Canada likes to act as if they are so environmentally responsible, yet in the dark of night send their garbage across the border to the U.S. Don’t take it personal, it is a fact.

Comments are closed.