The public sentiment regarding the mega-tsunami threat is predominantly characterized by fear, anxiety, and a lack of trust in preparedness efforts. While there are voices expressing skepticism towards the magnitude of the threat, the overwhelming majority are concerned about safety, governmental inaction, and personal experiences with natural disasters. Humor occasionally surfaces as a coping mechanism, but the urgency for action and awareness is evident across comments.

Government Agencies

Emergency Management Services

Coastal Residents

You should definitely take it, it's probably worth a lot more both monetary and emotionally to you than other things. 

Musical_Duckling

Cautious_Action7820

Viola is an investment and if you're stuck in a shelter, more people will appreciate its sound than a violin. High violin notes hurt my ears unless played by professionals.

MoonFlewOverCow

Is it just you or you and your family? Do you have insurance? Do you know where you're going off you need to leave? 
These questions can be deciding factors.

Do the calculations of what you absolutely need and how much space it takes. And if at all possible, add the viola. Not having it will add to the stress. Having and playing it on the other hand may relieve some stress. Also, since its a good one, you'd regret leaving it behind unless you're absolutely forced to do so.

linglinguistics

Take it. I would bring a whole orchestra with me if I could.

afatcatthatsfunny

girl there was CYCLONE ALFRED IN MY PLACE but i did not need to evacuate. But if i was you bring your viola with you because it is highly important

Winter-Wing-4315

Tsunami waves can end up having a fair bit of *directionality* in the sense that (despite the reasonable assumption made here of uniform propagation outward from the source) some specific directions from the tsunami source can see enhanced or degraded wave heights. The two main sources of directionality reflect either details of the source itself or ocean bathymetry that the wave passes over / ride along. 

For the first, the general idea is that the sea floor deformation that displaces water and generates the tsunami is not typically uniform, e.g., consider a tsunami generated by fault movement where the orientation of that fault rupture is going to displace more water broadly perpendicular to its orientation than along its orientation (e.g., [Bai et al., 2014](https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2014GL061686), [Titov et al., 2005](https://www.science.org/doi/full/10.1126/science.1114576)), which sets up an initial difference in potential amplitude of waves depending on where a potential impact zone is with respect to the orientation of the fault. 

For the second, sea floor bathymetry like mid-ocean ridges (e.g., [Koshimura et al., 1999](https://www.tandfonline.com/doi/abs/10.1142/S0578563499000115)) or continental shelves (e.g., [Gonzalez et al., 1995](https://link.springer.com/article/10.1007/BF00874375), depending on their orientation with respect to the location of the tsunami source, can act as waveguides such that portions of the tsunami wave traveling along these features can maintain a higher amplitude over greater distances than portions of the tsunami wave at comparable distances not traveling along these features (e.g., see again Titov et al., 2005). 

Additionally, once the tsunami gets to a particular location, local bathymetry can have pretty important influences on either accentuating or diminishing tsunami run-up (e.g., [Lynett, 2016](https://www.fujipress.jp/jdr/dr/dsstr001100040615/), [Dilmen et al., 2018](https://link.springer.com/article/10.1007/s00024-018-1769-1)).

If we consider the influences above in the context of rapidly generated warnings, the second two are broadly details that can somewhat quickly be implemented into projections. Specifically, if we know the location of the tsunami source (and a rough estimate of the size of the tsunami at the source either extrapolated based on something like earthquake magnitude or tide gauge measurements in the vicinity if available) then tsunami simulations can use that location and ocean bathymetry to get a sense of which locations (along with directions) may see enhanced amplitudes (e.g., [Satake, 1988](https://link.springer.com/article/10.1007/BF00876912)). Similarly, the local bathymetry may be included in these risk assessments and warnings in the sense that if the local bathymetry of a specific location is known to generally enhance or degrade tsunami waves in the past from observation (or predicted from prior simulation), this may also play into discrepancies in levels of severity of warnings ahead of a tsunami arrival. 

Details of directionality that may reflect the aspects of the source itself (i.e., the first bit I discussed) are a bit more challenging to do on the fly, but certainly some basic details like the orientation of the fault rupture and estimates of distribution of slip along the rupture come in relatively quickly from calculation of things like [finite fault models](https://earthquake.usgs.gov/data/finitefault/) based on seismic (and in some cases GPS) observations and these can potentially help to refine projections. More detailed observations of aspects of directionality from the tsunami source that might be determined by investigation of the after event bathymetry are obviously things that would not be analyzed on the fly or contribute to details of the tsunami warnings, but might be considered in later investigations of the event and resulting tsunami.

Finally, for tsunami warnings/watches/etc., there will be a set of initial alerts (based on rapid modeling using things like the location of the tsunami source and basic earthquake parameters like the magnitude and depth of the hypocenter, global bathymetry, and local bathymetry) that will be refined as more is learned about the source (i.e., the finite fault model and similar) but also as observations from various oceanographic sensors come in as the tsunami waves propagate, e.g., observations from the [DART](https://nctr.pmel.noaa.gov/Dart/) network can be used to refine projections and update alerts as needed (e.g., [Percival et al., 2011](https://link.springer.com/article/10.1007/s11069-010-9688-1), [Mungov et al., 2012](https://link.springer.com/article/10.1007/s00024-012-0477-5)).

CrustalTrudger

In addition to science reasons, there may be an element of international borders reasons - Hawaii is a US state and gets a different warning category from the US government than other islands that are part of other countries. 

That said, as the other comment mentioned there’s plenty of science reasons to consider, too. But since most media is US media, I wanted to mention that the sourcing and categories could have an effect.

Esri is a software company that makes GIS software, used for mapping and displaying map-based data. So most publications will be using that software but they aren’t the data source - they just help process, display, and distribute it.

PG908

You and everyone else in cali are hammering the site atm.

FailedLoser21

I remember talking with a buddy of mine in an MMO once while we were mid quest. He said, "i might have to go, tornado sirens just went off." A minute later, he said, "Oh nevermind, it stopped."

I then asked him, "Did it stop, or did the tornado take it out?" I was met with a long silence before he said, "Bro, that's not funny." 

I think it was hilarious and still laugh about it to this day.

DrWhoey

Accurate_Koala_4698

As someone from Louisiana who knows about mismanagement- make sure you have a go bag ready. At first sign, be ready to go. If you have an electric car, charge it now. Be ready for the second the site comes up and you are in the area. 

And if you are a person who can afford to leave now and suspect you could be affected- do it. Early evacuaters are important. Those who cant afford to leave won't until it is absolutly nessicary, so if you can afford to go now you are clearing up highways and emergency services for those who desperately need it.

fq8675309

The site was hit by a tsunami of visitors.

Viperniss

It won't be that bad, in Japan we were notified it'll be just 1 meter tsunami so I can't imagine it being as threatening all the way in north America

ThroatFuckedRacoon

https://preview.redd.it/hwhzffn8vxff1.jpeg?width=1440&amp;format=pjpg&amp;auto=webp&amp;s=3989745aa4b5107770065a60b01d7567daa535d6

Firstworldreality

yesitsyourmom

I'm taking a wild guess here but I reckon that map would show the coastline...

MontasJinx

EverythingBOffensive

The solution to so many things in life, Get High.

SickBurnerBroski

Elmo checked the stats and asked “why are we paying for all this bandwidth when barely anyone visits the site?”

AliceOfTheEarth

Tigger7894

bizmackus1

CA estimates are between 1 and 5 ft. Northern CA (Crescent City) being closer to 5 ft, and the rest of the CA coast closer to 1-2 ft. 
  
With waves hitting between 11:40pm and 1:30am

SuzieDerpkins

AggressiveTopper

[https://maps.conservation.ca.gov/cgs/informationwarehouse/ts\_evacuation/](https://maps.conservation.ca.gov/cgs/informationwarehouse/ts_evacuation/)

That map? Working.

Hot-Win2571

Possibly get your ass on the other side of the mountains????

Constant_Life1662

That site is on a sever served by CenturyLink 1.5Mbps DSL connection. There's just too many people visiting it for that 1.5Mbps to handle it.

TowstedBread

https://preview.redd.it/m1bviz9a3yff1.jpeg?width=1600&amp;format=pjpg&amp;auto=webp&amp;s=b9751096f467777340e5456f3c0af904e938bf97

Possumnal

Hope everyone is safe... Best wishes from Georgia!

FunForm1981

We all know its just Trump doing cannonballs in the ocean to try to avoid releasing the Epstein files.

South-Rabbit-4064

Google maps is showing tsunami safe zones

Moneyshot_ITF

Justasillyliltoaster

It's probably down because everyone is frantically going to it, trying to find out not to die horribly.

Rare_Trouble_4630

-War_Doctor-

Uniformly_Sarin319

Over in Oregon we're doing the same. 

For context, there was a 8.7 magnitude earthquake offshore of Russia. All of the west coast is on Tsunami watch. Hawaii has 9ft waves as of yesterday and we were warned that the worst of it would be around midnight.

RancidMoldySmegma

As a Californian, this does not surprise me at all

traveler-traveler

Something about if you see the bomb disposal technician running....

PandaRiot_90

I’m know I’m over simplifying, but wouldn’t any route east &amp; above sea level  be enough? Avoid the valleys and you should be fine?

Rylos1701

Alex_in_the_Sky

I live in baja, we don even have an evacuation map

boxingdog

Pretty fitting for Govt in Cali, how many houses have been rebuilt from the fires?

cyrusthemarginal

Hey, if you look it up and check images, it gives you what I assume is what you need. Tried it myself.

bedbathandbebored

literallyacactus

probably cause all of cali tryna look at that map

nipslippinjizzsippin

“ and when the world needed them the most, they fucking crashed”

MOXZShadow

Don't worry, after the Tsunami they will be able to update the map with the latest routes /s

nadav183

Good luck, don't look at japan, they have a tsunami and a hurricane. There are a lot of earth quakes and terrible weather. Hawaii is also under a tsunami warning but they have nowhere to go 🙏. Plus it is only part of CA is under tsunami warning the rest is just marine warnings and fog

RadioWavesHello

Funds cut, Trump say America has god on its side and is too awesome to be affected by natural catastrophic events

ninzun

The fact this is in a sub called "mildly infuriating" makes it seem almost British in humour.

Arminius_Fiddywinks

I lived in California for a few years and used to walk 4-5 miles almost every day on the beach in Seaside, CA. Walking up the path to go to the beach I always saw a sign for Tsunami Evacuation Route sign on that pedestrian path. I always thought it was kind of weird, like yeah obviously you should be evacuating away from the beach if there is a possibility of a tsunami, right? Maybe I was missing something...I am Floridian so my area of experience is more with hurricanes.

PinkyLeopard2922

Dry_Database_6720

Not anymore

From the NYT:

&gt;Tsunami waves hit California around 1 a.m. Pacific time Wednesday and were making their way down the coast, according to the National Weather Service, after a powerful earthquake off Russia’s eastern coast. The initial waves were 4.5 feet, according to data from the National Oceanic and Atmospheric Administration. \[...\]

&gt;A tsunami warning means that dangerous coastal flooding and powerful currents are possible and may continue for several hours or days.

[Tsunami Warning Issued for Northern California - The New York Times](https://www.nytimes.com/2025/07/30/us/tsunami-warning-california.html)

So stay out of the water bc of strong currents and away from the beach bc of flooding and bad traffic, but there's no threat of Japan-level tsunami.

A 4.5 ft wave may be a bit larger than usual, but destructive tsunami waves are much bigger than that. I mean i've swam at the jersey shore at high tide with waves taller than that. (everything is legal in new jersey)

Miami_Mice2087

Exanguish

Federal_Sympathy4667

Particular-Smile5025

surf the net on the information superhighway

Specialist_Brain841

Maybe its the otherway, earth knows the site is down and decided to fuck around

HydroCN

[deleted]

The Tsumani is down now, it's now just a light body of water that will wash ashore, the Tsunami will be back soon it had to make a right turn on the Pacific.

TrojanStone

Impressive_Maybe_277

nikogrande

Just your California californing. Can't put two sticks in a cross to save their lives. Absolute political rot.

RATSTABBER5000

gdawgwalrus

this is not mildly infuriating mf people are going to die

Sensitive-Bag-4843

Educational-Oil-3553

Gov. Newsom is way too busy complaining about Trump and worrying about his 2028 Prez run to worry about Californians.

CapeMOGuy

Anyone living in the area, stay safe.  Even small tsunami waves aren't something to fuck with.  Don't be a tourist and get swept out to sea.  

This may not be the massive tsunamis we've seen in 2004 and 2011, but it can still kill you.

RoyAwesome

How far inland is this expected to go? Will Tillamook or further have to worry?

THREESIDEDMONSTER

They should have put a tariff on Tsumanis

AVeryFineUsername

Be nice for it to clarify that first rather
Than resending old data

Rich_Passage_4531

But the news said it was only Northern California and Washington state. /s

CatPhysicist

Btw, if you need help documenting ur items for insurance claims, you can use this website called ClaimReady for documentation. Just upload a picture of your room and it will give you a list of all the items and their prices in a table that you can export to csv: https://claim-ready.vercel.app/

LowerComfort9488

beyond1488

Looks like low tide, i think we will survive.

gastropodia42

King tide is probably worse ... 🤷‍♂️

Solid-Emotion620

[1952 earthquake](https://en.wikipedia.org/wiki/1952_Severo-Kurilsk_earthquake) of comparable size impacted that region and caused considerable damage in Hawaii. Take warnings seriously and stay safe everyone!

End3rWi99in

Just wanna say, if you're reading "a couple meters of water" and think you don't need to evacuate, you need to evacuate.

The 2011 tsunami was only expected to be 6-8 meters and ended up being ~40 meters in the worst areas. Shoreline topography can turn a few feet of water into dozens of feet of water and it's not gonna be possible for you to predict that ahead of time.

Insertblamehere

[Revised to magnitude 8.8](https://earthquake.usgs.gov/earthquakes/eventpage/us6000qw60/executive) according to the USGS. Apparently this is the largest earthquake to occur worldwide since the one in Japan on 11th March 2011 as well

PlastikSporc

Fortunately at least for the US Pacific northwest and BC Canada, the wave is calculated to hit at low tide. If this holds, it will be an enormous bit of luck and help spare many communities.

Anyone know if other places are getting hit at null or high tides?

finnerpeace

I live in SE Alaska. Should hit me in an hour, low tide is in 2 hours. Im within 1/2 block of three different beachs and my house is 16feet above the high tide line. 

A little nerve racking putting the kids to bed tonight. But it should in theory not even make it to the high tide line.

UPDATE: we are all fine. Thanks.

NWCJ

Some years back, I was in Sitka, Alaska. For those not aware, Sitka sits on the Pacific Ring of Fire and from downtown you can see Mt Edgecumbe, a huge snow covered peak with a secondary volcanic crater, sitting right on the edge of the Pacific. Looking at that from downtown, it looks like something from a science fiction movie, quite surreal. It's really impressive.

As you wander around town, you see big tsunamic warning signs everywhere. They each say the same thing:

***Beware of tsunami threat, listen for the warning sirens.***

***If you hear the siren, head for high ground.***

***DO NOT GO DOWN TO THE BEACH TO SEE THE WAVE.***

***IF YOU ARE ON THE BEACH AND CAN SEE THE WAVE, IT WILL BE TOO LATE TO ESCAPE.***

Adds a whole different flavor to being a tourist in Sitka :)

rwblue4u

10-1120-10

There's something disconcerting about the twitter account for [NERV](https://x.com/UN_NERV) (yes from Evangelion) giving out real life tsunami warnings and updates.

DragonPup

8.7 is a monster quake. Hope people are able to stay safe

Dry-Peach-6327

Live stream of tsunami hitting japan https://www3.nhk.or.jp/nhkworld/en/live/

etfvfva

Tsunami currently landing in eastern Russia

Arch-by-the-way

That manga prophet better not claim a win

honk_incident

LWBoogie

Highest wave, as of now, is 1.3m at Kujikou, Iwate prefecture. TBS (Japan) &amp; Channel News Asia mentioned that the tsunami alert could stay until tomorrow.

json_946

Im watching some Japanese sites and cut/pasting into Chat GPT for translation. It looks like some of the tide gauges on Hokkaido are only reporting .3m, .4m and -.7m on the YouTube chat.

timpdx

Epicenter could be in the White house. :(

dandyloremaster

I’m in So-cal, we have the amenities packed but are 3 mins away from a mountain of 400 ft elevation gain. Going to bed! Be safe er’one

Theedukeybrown

Ukraine partnered with the democrats to make an earthquake machine?

MothersMiIk

How will Whidbey Island off the coast of Washington state be affected?

whale-trees

Someone please answer me this, if this Earthquake was so massive and so many places were announced to be in great danger... Why have we not seen any crazy tsunamis like the devastating ones we've had the last 20 years. Not conspiracy here or anything I just want to know a general explanation? Was it just a perfect storm (lol) that the tides and the crests of the waves resulted in it not being as severe or?

Detective-Ryan

Authorities say that the earthquake causing this tsunami is M8.7.

The huge earthquake of March 11, 2011 in Japan was M9.0. These 2 are nearly the same size.

kaiser9024

This shit just makes me REALLY nervous for the predicted megaquake Japan is set to get in its major population centers from ~~Nagoya up through ~~Sendai. This is already looking really bad.

ReallyAutisticGaymer

Dont worry Trump Will also put taxes on tsunamis

Ill_Imagination_6495

A scientist has raised concerns about the potential for a mega-tsunami, measuring up to 1,000 feet, to impact the US Pacific Coast.

Mega-tsunami Threat to US Pacific Coast

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