TE
TechEcho
Home24h TopNewestBestAskShowJobs
GitHubTwitter
Home

TechEcho

A tech news platform built with Next.js, providing global tech news and discussions.

GitHubTwitter

Home

HomeNewestBestAskShowJobs

Resources

HackerNews APIOriginal HackerNewsNext.js

© 2025 TechEcho. All rights reserved.

Tsunami warning ends for B.C. after large earthquake strikes off Alaska

233 pointsby nergalover 7 years ago

17 comments

mordechai9000over 7 years ago
I felt it here in Anchorage when I was on my way to bed. It felt like a shallow, rolling earthquake. It reminded me of a quake I experienced in 2001 in Washington state. The shaking went on for what I thought was 30 seconds. My wife woke up but my kids did not.<p>Within a couple of minutes, I saw the reported magnitude, depth, and location on the USGS earthquake site, <a href="https:&#x2F;&#x2F;earthquake.usgs.gov&#x2F;earthquakes&#x2F;map&#x2F;" rel="nofollow">https:&#x2F;&#x2F;earthquake.usgs.gov&#x2F;earthquakes&#x2F;map&#x2F;</a>.<p>About the same time, Google started showing a tsunami alert: <a href="https:&#x2F;&#x2F;www.google.org&#x2F;publicalerts&#x2F;alert?aid=43774f005241acb5&amp;source=ogs&amp;authuser=0" rel="nofollow">https:&#x2F;&#x2F;www.google.org&#x2F;publicalerts&#x2F;alert?aid=43774f005241ac...</a><p>We are in no danger from a tsunami here in Anchorage.<p>The alert shows potential tsunami waves arriving at coastal towns over the next couple of hours, with the first potential wave arriving in Kodiak in a few minutes. I have no idea how likely these waves are, but 7.9 is big. I am sure a lot of people are scrambling for high ground now.<p>God speed and be safe.
joferover 7 years ago
What&#x27;s really wild about this is that it&#x27;s actually a strike-slip earthquake, based on the focal mechanism (e.g. <a href="https:&#x2F;&#x2F;earthquake.usgs.gov&#x2F;earthquakes&#x2F;eventpage&#x2F;us2000cmy3#moment-tensor" rel="nofollow">https:&#x2F;&#x2F;earthquake.usgs.gov&#x2F;earthquakes&#x2F;eventpage&#x2F;us2000cmy3...</a>) Given how big it is, I&#x27;m extremely surprised that it&#x27;s stike slip. Furthermore, given the area (shallow and very near a subduction zone), anyone would immediately guess that it was a megathrust earthquake, and therefore likely to produce a tsunami. Interestingly, it&#x27;s not at all.<p>That&#x27;s likely a big part of why the tsunami watch was canceled so quickly. In addition to there being no direct detection of tsunami waves, strike slip earthquakes don&#x27;t produce significant vertical movement of the seafloor (barring triggering a landslide, anyway), and therefore don&#x27;t typically produce tsunamis.<p>However, Mw 7.9 is huge for a strike-slip earthquake. They&#x27;re usually not that large. Furthermore, it&#x27;s out in the oceanic crust of the incoming plate, so it&#x27;s not a subduction zone earthquake at all. Instead, it&#x27;s related to internal deformation of the incoming plate (albeit very near the plate boundary, so it&#x27;s not exactly an intraplate earthquake either).<p>Large strike slip earthquakes in oceanic crust aren&#x27;t unheard of, but they&#x27;re quite rare. This earthquake appears similar to the large strike-slip earthquakes near Sumatra in 2012 (e.g. <a href="http:&#x2F;&#x2F;www.earthobservatory.sg&#x2F;news&#x2F;exceptionally-large-strike-slip-earthquakes-occur-offshore-sumatra" rel="nofollow">http:&#x2F;&#x2F;www.earthobservatory.sg&#x2F;news&#x2F;exceptionally-large-stri...</a>). Definitely interesting!
评论 #16216081 未加载
oasisbobover 7 years ago
Since the danger seems to be receding -- I hope NWS &amp; related agencies can use this as a good drill to fix their web properties.<p>Tsunami.gov couldn&#x27;t handle the load, and many other official links (like mobile.weather.gov) just dump you into a government shutdown notice. Cell.weather.gov isn&#x27;t even resolving.<p>I&#x27;m sure someone thought the critical products would still be easily available even with a government shutdown, it sure didn&#x27;t work out that way.
评论 #16213499 未加载
评论 #16214064 未加载
评论 #16214624 未加载
评论 #16213853 未加载
robtaylorover 7 years ago
<a href="https:&#x2F;&#x2F;twitter.com&#x2F;SF_emergency&#x2F;status&#x2F;955764708442714113" rel="nofollow">https:&#x2F;&#x2F;twitter.com&#x2F;SF_emergency&#x2F;status&#x2F;955764708442714113</a><p>San Francisco Department of Emergency Management has tweeted that people within three blocks of the coast or five blocks of the San Francisco Bay should be prepared to evacuate.<p>Tsunami Watch for #SF. If you are w&#x2F;in SF &amp; 3 blocks of the Pacific Coast or w&#x2F;in 5 blocks of SF Bay, PREPARE TO EVACUATE SO YOU ARE READY IF EVACUATION IS NEEDED. Check on neighbors who may need help. Visit <a href="http:&#x2F;&#x2F;sf72.org&#x2F;hazard&#x2F;tsunamis" rel="nofollow">http:&#x2F;&#x2F;sf72.org&#x2F;hazard&#x2F;tsunamis</a> to see if you are in the evacuation zone.
评论 #16213028 未加载
评论 #16213027 未加载
评论 #16213793 未加载
评论 #16213880 未加载
justonepostover 7 years ago
<a href="https:&#x2F;&#x2F;tidesandcurrents.noaa.gov&#x2F;tsunami&#x2F;plot.html?stnid=9457292&amp;name=Kodiak%20Island" rel="nofollow">https:&#x2F;&#x2F;tidesandcurrents.noaa.gov&#x2F;tsunami&#x2F;plot.html?stnid=94...</a><p>So far so good.
评论 #16213045 未加载
walterbellover 7 years ago
When was the most recent ‘red’ tsunami warning for US west coast &amp; BC? Which coastal areas were physically affected by that one?<p>Edit:<p>2005 review: <a href="https:&#x2F;&#x2F;soundwaves.usgs.gov&#x2F;2005&#x2F;01&#x2F;fieldwork2.html" rel="nofollow">https:&#x2F;&#x2F;soundwaves.usgs.gov&#x2F;2005&#x2F;01&#x2F;fieldwork2.html</a><p>Lessons: <a href="https:&#x2F;&#x2F;pubs.usgs.gov&#x2F;circ&#x2F;c1187&#x2F;" rel="nofollow">https:&#x2F;&#x2F;pubs.usgs.gov&#x2F;circ&#x2F;c1187&#x2F;</a>
评论 #16213037 未加载
dawnerdover 7 years ago
Some buoy data: <a href="https:&#x2F;&#x2F;twitter.com&#x2F;BillKarins&#x2F;status&#x2F;955747863140675585" rel="nofollow">https:&#x2F;&#x2F;twitter.com&#x2F;BillKarins&#x2F;status&#x2F;955747863140675585</a>
评论 #16212404 未加载
McKayDavisover 7 years ago
The Tsunami Watch for Hawaii was cancelled at 1:10am HST.<p>[1] <a href="http:&#x2F;&#x2F;ptwc.weather.gov&#x2F;ptwc&#x2F;text.php?id=hawaii.TSUHWX.2018.01.23.1110" rel="nofollow">http:&#x2F;&#x2F;ptwc.weather.gov&#x2F;ptwc&#x2F;text.php?id=hawaii.TSUHWX.2018....</a>
评论 #16213046 未加载
dmmover 7 years ago
USGS page for this quake: <a href="https:&#x2F;&#x2F;earthquake.usgs.gov&#x2F;earthquakes&#x2F;eventpage&#x2F;us2000cmy3#executive" rel="nofollow">https:&#x2F;&#x2F;earthquake.usgs.gov&#x2F;earthquakes&#x2F;eventpage&#x2F;us2000cmy3...</a>
评论 #16212362 未加载
Altmedover 7 years ago
That&#x27;s a big quake! Thank God didn&#x27;t cause a tsunami, although data from buoys showed VERY early on that probability was VERY low for such an occurrence. Watch for sustained wave height for serious tsunami warnings, issues coming onshore. Should you see a quick rise, sustained or increasing height offshore, then a drop... Don&#x27;t wait for it! Get off the beach, away from waterways &amp; to higher ground. I suppode those of us in California need to be on watch for the next few weeks! DutchSinse on YouTube has been working on earthquake prediction for years, and although not 100% accurate, he&#x27;s been a LOT more accurate than anyone else, and has nailed the bigger quakes. I haven&#x27;t taken the time to learn his methods insideout, but I&#x27;ve seen him call accurately numerous earthquakes. I believe with more funding, and a staff, this guy could save many, many more lives. Having worked with these buoys, and on other NOAA projects, this DutchSince guy has a method to call earthquakes early. PLEASE support him! He is the best bet to predict quakes, to tell the difference between quakes and drilling, quakes set off by drilling, etc. He&#x27;s self-taught, and is more of a scientist than many I&#x27;ve met that went through years of &quot;training&quot; of methods that simply don&#x27;t work. He breathes &amp; lives this stuff, and he is onto something, far more than ANYONE else! He gets resistance from oil companies, which is sad, as he can save them money and lives! So get your batteries, your earthquake kits, Ham radios &amp; be ready! Stay safe, always be prepared &amp; ready for any type of disaster! Stay safe!
scentoniover 7 years ago
In case you&#x27;re wondering whether an Alaskan earthquake could cause damage in California, the answer is yes. The tsunami from the 1964 Good Friday earthquake in Alaska obliterated the port of Crescent City:<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Crescent_City,_California#Tsunamis" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Crescent_City,_California#Tsun...</a>
cal5kover 7 years ago
I hope everything is okay - but I’m finding this a fascinating real-time case study of the chaotic nature of breaking information during a (potential) disaster. Conflicting reports, false alarms, difficult-to-parse data...
评论 #16212792 未加载
yreadover 7 years ago
The tsunami alert:<p><a href="http:&#x2F;&#x2F;ptwc.weather.gov&#x2F;ptwc&#x2F;text.php?id=hawaii.TSUHWX.2018.01.23.1021" rel="nofollow">http:&#x2F;&#x2F;ptwc.weather.gov&#x2F;ptwc&#x2F;text.php?id=hawaii.TSUHWX.2018....</a><p>IF TSUNAMI WAVES IMPACT HAWAII THE ESTIMATED EARLIEST ARRIVAL OF THE FIRST TSUNAMI WAVE IS<p><pre><code> 0423 AM HST TUE 23 JAN 2018</code></pre>
评论 #16212468 未加载
评论 #16212470 未加载
justonepostover 7 years ago
Kodiak Police Department 7 mins · TSUNAMI UPDATE: 0229 hours<p>Harbor officers report water reciding from our harbor. Citizens should remain in place and wait for further updates.<p><a href="https:&#x2F;&#x2F;www.facebook.com&#x2F;KodiakPD&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.facebook.com&#x2F;KodiakPD&#x2F;</a>
therealdrag0over 7 years ago
&gt; Tsunami warning ends for B.C. after large earthquake strikes off Alaska I first interpreted this as “There was going to be a Tsunami, but then an earthquake struck which nullified it.”
mathgeniusover 7 years ago
Wow 15 hours to australia, that thing is moving fast.
评论 #16212463 未加载
评论 #16212586 未加载
songzmeover 7 years ago
would tsunami be a concern for Californians when a big earthquake happens in California?