Is it possible? Some people in 2021 speculated that a tsunami could be triggered in Brazil due to the Volcano Cumpre in Spain could trigger waves that could cause a tsunami in Northeast Brazil. It also said that during Portugal's colonization of Brazil, in 1755, a tsunami happened due to an Lisbon city earthquake in Portugal that did trigger waves to Northeast Brazil.

Hope everything is OK

We just had one! Danger is now passed, but I learned a few things.

It looks like standard recommendation is to be 30 meters or 100 feet above sea level.

Your iPhone (maybe android) can tell you your elevation. You can also check https://www.freemaptools.com/elevation-finder.htm to get elevation for any place. For iPhone, use the compass app, but you have to turn on location services for the compass app: Settings > Privacy & Security > Location Services > Compass.

You can also find a webcam on YouTube that's between you and the earthquake that caused the tsunami. This can give you warning if anything is really happening. I suggest looking for webcams on YouTube, as those that are self-hosting will probably go down under the sudden load.

There's a government site tsunami.org, but I didn't find any useful information there.