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M 7.4 earthquake – 100 km ENE of Miyako, Japan

earthquake.usgs.gov

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Re: M 7.4 earthquake – 100 km ENE of Miyako, Japan

#21

Post by piazz »

kzrdude wrote: post #20
piazz wrote: post #19

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 apartmen…

How do you use your 45 seconds?

If it's a big one and it's near you, you'd move away from the windows and heavy things that can fall, I suppose?

For me I always just turn on iPhone screen recording and marvel at this amazing app and wish we had something like this in California.

Re: M 7.4 earthquake – 100 km ENE of Miyako, Japan

#22

Post by fungi »

pezezin wrote: post #12

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

was reading in a park in suburban tokyo a few years ago, notifications arrived for the noto peninsula earthquake.

kids in the park stared doing wobbly knee dance :D

felt the quake about 30sec later.

Re: M 7.4 earthquake – 100 km ENE of Miyako, Japan

#23

Post by konart »

piazz wrote: post #19

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 apartmen…

>NERV

Does it play appropriate Evangelion OST track depending on magnitude though?

Re: M 7.4 earthquake – 100 km ENE of Miyako, Japan

#24

Post by pezezin »

fungi wrote: post #22
pezezin wrote: post #12

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

was reading in a park in suburban tokyo a few years ago, notifications arrived for the noto peninsula earthquake. kids in the park stared doing wobbly knee dance :D felt the quake about 30sec later.

The one in 2024? I was in Tokyo at that time but we didn't get any notification nor felt anything :/

Re: M 7.4 earthquake – 100 km ENE of Miyako, Japan

#25

Post by pezezin »

asutekku wrote: post #18
whatsupdog wrote: post #14

Earlier quoted context omitted.

How much warning did you get? I mean in minutes or seconds?

Depends on the location, the alert comes usually as soon as the initial tremors are registered. If you're at the epicenter, tough luck. For example, for me in Tokyo, the alert came 2 minutes before it hit, and even then, the actual earthquake was extremely subtle.

In our case I guess we got the warning 10~20 seconds before the earthquake? I don't know, I didn't count it xD

Re: M 7.4 earthquake – 100 km ENE of Miyako, Japan

#27

Post by klempner »

tristanj wrote: post #2

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.

Yes, this is definitely only a medium deal, given that the tsunamis were mild. There is the usual concern that it might be a foreshock for a bigger quake but that's fairly unlikely.

Plenty of disruption (including a bunch of the shinkansen lines) and annoying evacuation up on the coast.

I will say that this was the longest swaying I've felt in my Kawasaki tower mansion apartment since moving here three years ago -- things were still moving about 5 minutes after it started.

Re: M 7.4 earthquake – 100 km ENE of Miyako, Japan

#28

Post by Aboutplants »

piazz wrote: post #19

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 apartmen…

45 seconds is an incredible accomplishment. That’s a decent amount of heads up to get safer place. Obviously nerve wracking but great progress in alerts

Re: M 7.4 earthquake – 100 km ENE of Miyako, Japan

#29

Post by Tor3 »

piazz wrote: post #19

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 apartmen…

I didn't feel a thing a bit south of Nagoya. Almost strange that there was nothing here, when you got shaking in Tokyo.
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