HN Explorer

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tristanj
The earthquake magnitude was revised up to a 7.7

No major tsunami is expected, local media reported initial waves were recorded as high as 40cm. The Japan Meteorological Agency forecasted up to 3m (10ft) waves.

I don't believe this earthquake is a big deal. Large earthquakes (M7.0+) happen in Japan several times a year, and given this happened in the middle of the ocean, I don't expect any major damage.

pezezin
I live in Aomori (Northernmost prefecture of Honshu) and we got the warning before the earthquake arrived by all the cellphones in the office going crazy at the same time. It was kind of funny, because we have a lot of new guys here who have never been to Japan before and it was their first earthquake ever xD
forbiddenvoid
I was just in Aomori this past week (to see the sakura blossoms in Hirosaki). We literally left Sunday night, and while it seems like there really wasn't any concern in the city, I'm not sure I would have been prepared as a visitor to the country.
donw
This one was weird, too, like being on a boat in mildly choppy water, not a violent shake at all.
piazz
Felt it all the way in Tokyo!

There is this amazing app called NERV that, whenever there is a large earthquake anywhere in Japan, sends you an early warning push notification and an animated display with shockwaves emanating from the epicenter, plus a countdown timer for the first wave hitting you. The first it went off for me it felt like something out of sci-fi. I think I got 45 seconds this time before my apartment started shaking.

https://nerv.app/en/

CodeCompost
Is this the Richter scale? I thought it was obsolete.
felixding
I live in Tokyo. Today's quake felt pretty strong (maybe because I was on the 14th floor) and lasted a while. Haven't felt one this big in months.
vaylian
How long do these earthquakes typically take until they are over?
budududuroiu
Was in Tokyo today, if I didn't see the news, I wouldn't have noticed there even was an earthquake.

Surprised others said they felt it.

ursuscamp
My brain is so cooked that I saw “M 7.4” and the first thing I thought was, “Which model is that?”
ngruhn
It's quite mid on the benchmarks. No where near the SOTA earthquakes.
[dead] realo
[flagged]
alfg
I live in Tokyo in a 2 story house. Felt it swaying quite a bit for a few minutes.
eigenform
afaict part of the messaging behind this quake is about the worry that big Sanriku earthquakes like this might make it easier for the northeast part of the trench to unlock (closer to Aomori and Hokkaido, where the Japan Trench starts turning into the Kuril Trench).