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M8.7 earthquake in Western Pacific, tsunami warning issued

earthquake.usgs.gov

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Re: M8.7 earthquake in Western Pacific, tsunami warning issued

#11

Post by contingencies »

AIS map of vessels in the area: https://www.marinetraffic.com/en/ais/home/centerx:166.7/cent...

A fairly small US fishing vessel is in relative proximity... https://www.marinetraffic.com/en/ais/details/ships/shipid:43...

Talked to the AI which said: MMI 4.5 in the context of an M8.7 quake, for your vessel: Danger level from shaking alone: Very low in open water. Danger from tsunami in the open ocean: Very low (unless extremely close to epicenter). Prime danger: If near shore, from tsunami run-up, NOT the shaking. Actionable advice: Remain in deep water until tsunami warnings have cleared; proceed to port only when officially safe. Monitor official maritime and tsunami alerts closely after any major earthquake.

That's interesting. Mental note, if piloting a vessel in a tsunami, head to deep water.

Re: M8.7 earthquake in Western Pacific, tsunami warning issued

#12

Post by wging »

lordswork wrote: post #6

https://www.conservation.ca.gov/cgs/tsunami/maps is getting a hug of death :( If anyone gets on, please post a screenshot.

The USA also has a site that seems to be up at the moment. Without seeing the CA version I'm not sure how it differs, but I suspect it's possible for Canadians to get some useful local information from it: https://www.tsunami.gov/

Re: M8.7 earthquake in Western Pacific, tsunami warning issued

#13

Post by swader999 »

nodesocket wrote: post #9

Can the wave be seen and tracked from planes above? I know they can travel at upwards of 300+mph but given the distance from Russia to the west coast seems like it should be able to be tracked.

You can see bouys displaced by the seismic event, some up to one foot close by. Pretty crazy

Re: M8.7 earthquake in Western Pacific, tsunami warning issued

#14

Post by _fs »

andsoitis wrote: post #2

Quick link to the tsunami view: https://www.tsunami.gov/ Just “watch” level for US west coast, but warning level for Hawaii and Alaska.

Air alarms are going off in Hawaii. Still a few hours away, but they are not joking around. Saying it can wrap around all the islands and hit anywhere

Re: M8.7 earthquake in Western Pacific, tsunami warning issued

#16

Post by czhu12 »

mordechai9000 wrote: post #7

Has anyone heard how bad it was in Petropovlosk? USGS estimates "severe" shaking with the possibility of moderate to heavy damage and a chance of fatalities. They have had quite a swarm of quakes there over the last couple of weeks, including one that was M7+ around the 20th.

On Twitter, a search for Russia brings up some videos of pretty severe shaking

Re: M8.7 earthquake in Western Pacific, tsunami warning issued

#17

Post by decimalenough »

Japan forecasting tsunamis up to 3m across basically the entire eastern coast. First waves will hit within 10 minutes.

https://www.nhk.or.jp/kishou-saigai/tsunami/

https://www3.nhk.or.jp/news/live/ (live, Japanese)

https://www3.nhk.or.jp/nhkworld/en/live/ (live, English)

The east coast is also where the vast majority of Japan's population lives, and was previously hit by the 2011 tsunami (Fukushima and all that). We're about to find out the hard way what lessons they have learned.

Update: First detected wave in Nemuro, Hokkaido (northernmost Japan) was only 30cm. There may be more. Waves of 3-4m have apparently already hit Kamchatka in Russia.

Update 2: We're almost an hour in and highest waves to actually hit Japan remain only 40 cm. It looks unlikely that this will cause major damage.

Re: M8.7 earthquake in Western Pacific, tsunami warning issued

#18

Post by addaon »

ac29 wrote: post #15
yinser wrote: post #4

That is _really_ big. It will likely crack the top 8 ever recorded. https://en.wikipedia.org/wiki/Lists_of_earthquakes

By magnitude it would be the second largest on that list

Multiple lists. On the list of strongest by magnitude, it would be in a three-way tie for 7th if there's no further revision to the magnitude estimate (which there usually is). It would be second by magnitude on the list of deadliest earthquakes, but thankfully due to location will not likely make that list.

Re: M8.7 earthquake in Western Pacific, tsunami warning issued

#19

Post by nytesky »

_fs wrote: post #14
andsoitis wrote: post #2

Quick link to the tsunami view: https://www.tsunami.gov/ Just “watch” level for US west coast, but warning level for Hawaii and Alaska.

Air alarms are going off in Hawaii. Still a few hours away, but they are not joking around. Saying it can wrap around all the islands and hit anywhere

It will arrive in California in the middle of the night. Hope they don’t materialize.

Re: M8.7 earthquake in Western Pacific, tsunami warning issued

#20

Post by [deleted] »

wging wrote: post #12
lordswork wrote: post #6

https://www.conservation.ca.gov/cgs/tsunami/maps is getting a hug of death :( If anyone gets on, please post a screenshot.

The USA also has a site that seems to be up at the moment. Without seeing the CA version I'm not sure how it differs, but I suspect it's possible for Canadians to get some useful local information from it: https://www.tsunami.gov/

[deleted]
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