Live data from Hacker News

Tsunami Warning for Northern California

tsunami.gov

11–20 of 177 posts

Re: Tsunami Warning for Northern California

#11

Any idea how far it would reach, what cities would actually be affected?

> Estimated tsunami start times for selected sites are;

Fort Bragg California 1110 AM.PST. December 5.

Crescent City California 1120 AM.PST. December 5.

Port Orford Oregon 1120 AM.PST. December 5.

Brookings Oregon 1125 AM.PST. December 5.

Charleston Oregon 1140 AM.PST. December 5.

San Francisco California 1210 PM.PST. December 5.

The tsunami warning will remain in effect until further notice. Refer to the internet site tsunami.gov for more information.

Re: Tsunami Warning for Northern California

#13
post #8

How do Tsunami Warnings work? For a Midwesterner a Tornado Warning requires someone to see it, or be be detected by radar. It's usually a good indicator that it is highly likely that the tornado exists and it is actively doing its thing somewhere. Warnings are pretty specific and almost always involve the thing happening. Tsunami though, would it have to exist as far as seeing it on the coast, or is this more of a "c…

i believe they have monitoring deep ocean buoys

Re: Tsunami Warning for Northern California

#14
post #8

How do Tsunami Warnings work? For a Midwesterner a Tornado Warning requires someone to see it, or be be detected by radar. It's usually a good indicator that it is highly likely that the tornado exists and it is actively doing its thing somewhere. Warnings are pretty specific and almost always involve the thing happening. Tsunami though, would it have to exist as far as seeing it on the coast, or is this more of a "c…

It is all 100% automatic based on earthquake data.

Re: Tsunami Warning for Northern California

#15
post #8

How do Tsunami Warnings work? For a Midwesterner a Tornado Warning requires someone to see it, or be be detected by radar. It's usually a good indicator that it is highly likely that the tornado exists and it is actively doing its thing somewhere. Warnings are pretty specific and almost always involve the thing happening. Tsunami though, would it have to exist as far as seeing it on the coast, or is this more of a "c…

I am no expert, but I believe they are triggered anytime there is an underwater earthquake. Often these still do not produce any tsunami, but they are issued out of an abundance of caution, there isnt generally a way to see if there really is or isnt until it actually shows up on the coast

Re: Tsunami Warning for Northern California

#16
Minor point, but the web site (under "Origin time:") displays a time stamp in local time (local to the web browser viewing the page), but doesn't tell the user that's what it's doing. imho very confusing.

Edit. Noticed it says in small print lower down the page: "Note: Times are local to your browser, unless otherwise indicated" so either I missed that before, or someone on this thread fixed it...

Re: Tsunami Warning for Northern California

#19

    FORECASTS OF TSUNAMI ACTIVITY
    -----------------------------
     * Tsunami activity is forecasted to start at the following
       locations at the specified times.

                     FORECAST
                     START
    SITE             OF TSUNAMI
    ----             ----------

     * California
    Fort Bragg       1110  PST Dec  5
    Crescent City    1120  PST Dec  5
    San Francisco    1210  PST Dec  5

     * Oregon
    Port Orford      1120  PST Dec  5
    Brookings        1125  PST Dec  5
    Charleston       1140  PST Dec  5
via https://www.tsunami.gov/events/PAAQ/2024/12/05/so1aq0/1/WEAK...
Post reply on HN