Posts: 27
Joined: Thu Oct 07, 2004 9:42 pm

Turbulence Over Japan

Thu Oct 07, 2004 9:56 pm

How come everytime when I flew thru Japan to other Asian countries like Hong Kong or Taiwan, there must be an unstable turbulence over Japan. And everytime when I flew to NTR, the landings were not that good (UA, NW or JL)?
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Joined: Thu Sep 20, 2001 3:36 am

RE: Turbulence Over Japan

Thu Oct 07, 2004 11:54 pm

I'm guessing you mean NRT, not NTR...

You probably just got unlucky. Or it may depend on where you're coming from. Japan is a mountainous country so if you're coming in over the mountains there's very likely going to be mountain wave turbulence. But if you're coming into NRT from the east, you're not going to experience that (you may still experience weather-related turbulence).

I feel mountain wave turbulence over Alaska every time I fly to Japan. I hate flying over Alaska; it can get really bad sometimes. I'm sure the same effect happens over the mountains in Japan.

I've flown into/out of NRT ahead of or behind typhoons and the turbulence is pretty bad. But I've also flown in during sunny summer weather and it's been totally smooth.

NRT also only has parallel runways so you might get some nasty crosswind landings sometimes that may not feel too smooth at touchdown. But every airplane has a crosswind limit so no matter what, you'd be below the operational crosswind limit. Airports are built taking the prevailing winds into account also so it's unlikely there are strong crosswinds all that often at NRT. But I've experienced one pretty severe crosswind landing there and you may have also.
I'm tired of being a wanna-be league bowler. I wanna be a league bowler!
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Joined: Fri Nov 21, 2003 1:34 pm

RE: Turbulence Over Japan

Fri Oct 08, 2004 12:35 am

I've flown quite a bit to, from and around Japan and I can't say I've encountered more turbulence there than anywhere else. I do recall one rough flight from KIX to FUK, but that was due to thunderstorms, which of course can happen anywhere. So it could just be your bad luck.  Smile

I have also had some nasty bumps while passing over the mountains of southern Alaska en route to Japan, just as Spacecadet mentioned.
Common sense is not so common. -Voltaire
Posts: 27
Joined: Thu Oct 07, 2004 9:42 pm

RE: Turbulence Over Japan

Fri Oct 08, 2004 3:45 am

I recalled when I landed on NRT in Feb, the plane (UA 744) touched down the rwy side by side and some people screamed. The wind was about 40km p.h and we had to circle around at 10,000feet for 45 mins....

Another severe turbulence occurred when I flew from Tokyo to HK. The plane was shaking over Osaka and Kagoshima and the FAs had to take a seat. The service stopped for 2 hrs and the FA told me that the turbulence was at level 4.
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Joined: Fri Sep 17, 2004 5:54 am

RE: Turbulence Over Japan

Fri Oct 08, 2004 4:10 am

I have experienced this personally but the winds over Mt. Fuji frequently attack aircrafts. Instance, that happened a few times from flights to HND-ITM or KIX. I have not expected severe turbulence going to western Japan (west of Osaka)
Flown on: DC-10-30, B747-200B, B747-300, B747-300SR, B747-400, B747-400D, B767-300, B777-200, B777-200ER, B777-300
Posts: 67
Joined: Thu Oct 07, 2004 7:08 pm

RE: Turbulence Over Japan

Fri Oct 08, 2004 7:24 pm

As winter approaches the jetstreams usually move south between japan and taiwan . They are very strong at at least 150 to 200 kts and you are very likely to find turbulence on either side of these jetstreams. If you are in it it is smooth but crossing it or flying along side it can give you a rough ride
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Joined: Sun Nov 14, 1999 1:33 am

RE: Turbulence Over Japan

Fri Oct 08, 2004 7:51 pm

It was not me, I swear it!!!

 Smile/happy/getting dizzy

Seriously, now... My brother flew CDG-NRT and told me about a bumpy approach. Bu for sure Ktachiya knows well, an for sure Spacecadet's explanation is very clear and understandable.

Anyway, this thread is a good clue of where I can find some turbulence...,
although probably I would change my mind if one day I suuffered some of the severe ones of that area...

Enjoy turbulences!!!

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