After mega-quake, there won't be much time before tsunami waves reach Olympic Peninsula

[Yo_Mama_Been_Loggin]

Last weekend’s undersea volcanic explosion near Tonga devastated the island nation and sent small tsunami waves to Washington’s ocean coast. Those waves took about 12 hours to reach the state and gave residents plenty of time to prepare if they had been bigger.

Those same residents would have only 10 minutes to evacuate for waves up to 100-feet-high that would hit them following a massive earthquake in the Cascadia subduction zone. Some might not get that much time. Ground sinking below their feet might flood during a magnitude 9 quake.

That’s what computer modeling shows, according to a report released Jan. 10 by the Washington Geological Survey. The report illustrates what would happen to cities, river mouths, beaches and other low-lying areas on the Olympic Peninsula. Previously, the Geological Survey released maps for the southwest Washington coast, San Juan islands and Puget Sound.

The report includes detailed maps from just north of Grays Harbor to Port Townsend. The goal is to prepare both officials charged with community protection as well as to warn the public of potential hazards.

https://www.yahoo.com/news/mega-quake-won-t-much-130000744.html

[flying_wahini]

1. The same scientist that predicted Fukushima disaster wrote an article about 10 years ago on

How bad it will be there. Then said we are 200(~) years overdue.

Scary shit.
Here it is. Read with a stiff drink in your hand.
[link:https://www.newyorker.com/magazine/2015/07/20/the-really-big-one|

[Pachamama]

9. Yikes...

[applegrove]

2. They did a story on an early 1700s earthquake on Vancouver

Island. They showed a drop off of two feet of one piece of land from another in a bay. Two feet. That is huge. They found out the year of the earthquake from the tsunami that hit Japanese rice warehouses across the Pacific. Very scary.

[Grasswire2]

3. I wonder how Oregon's Columbia and Willamette would be affected.

Asking for a friend.



I live on the very bank of a tidal river.

[maxsolomon]

4. Not as bad as the coast, but

when it hits they, better high-tail it uphill.

a 9 feels unlikely. 100' waves feel unlikely.

[Grasswire2]

5. we are sixty miles inland from the ocean

..and the river is really tidal here, even so. I have forgotten the exact figures, but it might be as much as four feet variance as it is. The door here is probably 25 feet higher than the surface of the river, an embankment. It did come right to this door in 1996 (I didn't live here, then)

I think I'd better get a chart to know more precisely what it is these days.

[maxsolomon]

11. just be ready to run.

i work on a pier. well, i used to before CV19.

[captain queeg]

6. Pretty much everything east of the mountains will be safe

And anything not well over 1-200 ft elevation could be endangered. Utilities will be out. One of the things that caught my attention is there will be no gasoline for months. Any that makes it to the region will go to first responder types. And as someone has pointed out we are already overdue. It’s happened for thiusands of years, every 400 hundred years. Plus or minus a couple hundred, the 400 is just an average. I’ve heard there a 30% chance we’ll see one in our lifetimes.

[CanonRay]

7. They estimate out chunk of the Oregon coast

could drop 7 feet when it goes. Hope I'm already dead.

[cbabe]

8. Thinking this is why Bill Gates is building his nuclear plant in Wyoming, away from the coast like

other plants?

[flying_wahini]

10. There is a petrified forest underwater off the coast of Oregon that few people know about .

Apparently the coastline fell eons ago.