[intunderflow]

Was in a hotel in Sapporo, almost got thrown out of bed. Lot of people in the hotel lobby now.

Considering leaving Hokkaido by air if a Hokkaido and Sanriku Subsequent Earthquake Advisory is issued, don't really want to be in a potential megaquake.

[cedws]

People were freaking about the July megaquake prophecy and nothing happened. Trying to time it is silly, just chill and enjoy your stay, you'll probably be fine.

[fogj094j0923j4]

Megaquake is following a major earthquake is well documented. This is not silly prophercy stuff. Parent was talking about that case.

[freetime2]

This is different than the July megaquake prophecy, which was indeed dumb. With a strong quake like this there will be aftershocks. Most will be small, but there is a risk (about 5% according to the USGS) of an even stronger quake than the first within the next week or so [1].

I agree the parent will likely be fine, but it can be stressful in the aftermath of a large quake. And if they want to leave the area and have the opportunity to do so calmly and safely, I think that’s justified.

[1] https://www.usgs.gov/faqs/what-probability-earthquake-a-fore...

[intunderflow]

That's a bit like comparing apples to oranges. One was published by social media, one was published by the Government of Japan.

[jmward01]

I'm not a geologist, but this was pretty deep (44.1k) so not likely a foreshock right? Any actual geologists have a thought here? I know we have seen some indications that foreshocks can happen before megathrust earthquakes but it would need to be at the interface right? This looks like it is just the subducted slab deep down which in the 'intermediate zone' so not impacting the interface that 'slips' in a megathrust earthquake. (again, not a geologist) Now there have been, by that I mean just now, a 6.6 aftershock that was only 10km deep so that is potentially more concerning?

[akg_67]

Good luck, the Sapporo Chitose airport is closed for inspection of both runways.

BTW, you are safer in hotel than outside. No need to stay in lobby, go to bed, just protect your head. I experienced much bigger one in Sapporo in 2018.

[pcl]

When I moved to SF, someone told me that the three most important things you can do for earthquake safety are:

- make sure nothing can fall on you when you're in bed (no mounted artwork above the headboard; no lamps etc on side tables that are high enough to fall on you)

- make sure you have footwear in your bedroom, so you can be mobile if there's broken glass everywhere

- store extra drinking water somewhere (I used a 6-gallon carboy that I periodically refilled)

Probably there are other good things to do, but all those made a lot of sense to me. Most of us spend more time in bed than in any other fixed location, so making sure the bed is a safe place rings true. And water is life.

[rishikeshs]

I’m curious, how is it more safer inside a building than being outside?

[linenmerchant]

Best of luck!