The coming Japanese snow season 2018-2019 Weather

Discussion in 'Weather' started by Sandy, Jul 10, 2018.

  1. Sandy

    Sandy Dark Sith Lord of the Pool Room
    Moderator Ski Pass - Gold

    Joined:
    Jan 1, 1998
    Messages:
    61,326
    Likes Received:
    8,074
    Well, it's only July, and the Japanese snow season for 2018-2019 is not that close, but there's been plenty of weather happening in Japan.

    The 2017-2018 came to a fairly quick end, with the warmest max average March(16.9C) and April(22.1C) on record in Tokyo (and other places as well).
    May and June were about average, while the first 10 days of July have been above average.
    June was coolish for the first 3 weeks, but well above average for the rest.

    The rainy season(the stationary boundary that moves north from Taiwan from about May) for Tokyo was very short (around 1.5 weeks instead of 3-4 weeks.

    HOWEVER, in western Japan, and to the north in S. Korea and nearby areas of China, the rainy season was unusually strong.
    A typhoon came through that area and western Japan this time last week, and brought with it "unprecedented" rain along the Japan mountainous areas from Kyushu to as far as Gifu Prefecture, just west of Nagano Prefecture, and in the Inland Sea and Shikoku (the smallest of the 4 large islands of Japan.



    When described as "unprecedented", 364 millimeters (14.3 inches) of rain fell in two hours between 5 a.m. and 7 a.m. on Sunday 8th July in the city of Uwajima, in Ehime Prefecture on Shikoku island.
    155 people have died with another 50+ missing, mostly in Hiroshima Prefecture.
    Hiroshima city has had its highest July rainfall on record (475mm) in just the first 8 days of the month, and most of it in 3-4 days (or less)

    Clearly the rain totals were exacerbated by orographic lift, as most of the rain was in the mountainous spine of Japan.

    At this stage, there are NO pointers for the 2018-2019 snow season!!!! ;)
     
  2. Trail Blazer

    Trail Blazer Part of the Furniture

    Joined:
    Jun 8, 2000
    Messages:
    10,302
    Likes Received:
    176
    180mm/h for two hours straight is astonishing!
     
  3. Rabid K9

    Rabid K9 One of Us
    Ski Pass - Silver

    Joined:
    Jul 15, 2008
    Messages:
    2,921
    Likes Received:
    2,272
    Yep, that is quite a downpour.
     
  4. Crispy013

    Crispy013 One of Us

    Joined:
    Jun 6, 2010
    Messages:
    1,294
    Likes Received:
    1,389
    Crazy numbers!

    Here’s hoping for an early start to the coming season. Going to be in the mountains from the 29th Dec, so fingers crossed the switch gets an early test in December.
     
    Froff Life likes this.
  5. Sandy

    Sandy Dark Sith Lord of the Pool Room
    Moderator Ski Pass - Gold

    Joined:
    Jan 1, 1998
    Messages:
    61,326
    Likes Received:
    8,074
    Let's hope..... the best thing about an early start is the lack of people!!!!
     
    LMB likes this.
  6. skichanger

    skichanger A Local
    Ski Pass - Gold

    Joined:
    Jan 1, 2012
    Messages:
    5,530
    Likes Received:
    2,106
    Have just got back from 5 weeks working on my lodges. Crazy weather. Within 1 week I had the heater on and then was completely overheating. And no rain for a week in the rainy season and then 2 days of downpour.
     
  7. LM

    LM Hard Yards

    Joined:
    Sep 26, 2005
    Messages:
    51
    Likes Received:
    2
    Thanks Sandy for the post
    I was googling just how much rain fell with no luck. Then I thought check this forum...bingo.
    Sad so many lives lost and the destruction. We toured the Okayama area in January before heading to the slopes.
    Cheers
     
  8. Sandy

    Sandy Dark Sith Lord of the Pool Room
    Moderator Ski Pass - Gold

    Joined:
    Jan 1, 1998
    Messages:
    61,326
    Likes Received:
    8,074
    Some places had more than 1000mm in 3 days. I've seen more than 200mm overnight in Yokohama at times, but these figures for western Japan are staggering.
     
  9. andrew7

    andrew7 Hard Yards

    Joined:
    May 3, 2007
    Messages:
    396
    Likes Received:
    50
    Nasty weather indeed. We're coming over the first week of October mainly to trek the Kumano Kodo trail. Never been to Japan out of ski season so will be very interesting. Any ideas on what weather we can expect then Sandy san?
     
  10. LMB

    LMB Old but definitely not Crusty!
    Ski Pass - Gold

    Joined:
    May 6, 2010
    Messages:
    22,276
    Likes Received:
    9,505
    Insane amounts of rain.
    And knowing the peaks and valleys and settlements within those valleys around Hiroshima - eek! That’s one hell of a funnel.
     
  11. Sandy

    Sandy Dark Sith Lord of the Pool Room
    Moderator Ski Pass - Gold

    Joined:
    Jan 1, 1998
    Messages:
    61,326
    Likes Received:
    8,074
    Weather's usually good in Japan then. Typhoon season is mainly over. No longer hot summer temperatures.
     
  12. Nozawaman

    Nozawaman A Local
    Ski Pass - Gold

    Joined:
    Nov 7, 2002
    Messages:
    6,084
    Likes Received:
    1,965
    We have been skiing around 13th December for the past few years .
     
    skichanger likes this.
  13. seekingpow

    seekingpow One of Us

    Joined:
    Dec 19, 2008
    Messages:
    2,726
    Likes Received:
    242
    @Sandy any correlation in terms of local folklore between the weather seen this rainy season/summer and winter prospects?
     
  14. Sandy

    Sandy Dark Sith Lord of the Pool Room
    Moderator Ski Pass - Gold

    Joined:
    Jan 1, 1998
    Messages:
    61,326
    Likes Received:
    8,074
    I've had a look at some of that, and there's not much correlation as far as I can see.
     
    seekingpow likes this.
  15. Sandy

    Sandy Dark Sith Lord of the Pool Room
    Moderator Ski Pass - Gold

    Joined:
    Jan 1, 1998
    Messages:
    61,326
    Likes Received:
    8,074
    Ok, so it's been hot since the rainy season finished in Tokyo around the 20th June (about 3 weeks early and 3 weeks shorter than usual). There a stationary boundary that moves from The Philippines in around April, gradually north to hit Japan in June..... this is the "rainy season" or "Tsuyu".
    On the southern side is warmer air, northern side is warmer air.

    However, the temperatures in late June until now have been well above average.

    Since late last week, there's been a heat wave, 5 people have died, 1500 hospitalised. The deaths occurred in six prefectures: Toyama, Shizuoka, Tottori, Hiroshima, Oita and Kumamoto, which saw temperatures between 33.5 and 37.4, some of which are in last week's flood areas, which may be a contributing factor (homes destroyed, no A/C, etc)
    Elsewhere, Kyoto, Gifu and Mie prefectures saw the mercury top 38. Tajimi in Gifu Prefecture got to 38.7 degrees, and is often the hottest place in Japan. These are more like August temperatures, when usually we get maximums of 30-35 every day, and lows above 24-26 every night.

    While the temperatures are not super high by Aussies standards, it's the humidity that is the problem, plus the fact that it never gets cool at night. For example, Tokyo this morning at 8.52am, it's topped 33 degrees, 69% humidity.
    Yokohama was 30.0 at 8am, 74%, after a low of 26.7

    It gets so hot in Japan because of the Kurushio current.
    [​IMG]

    It flow further south in winter, but comes very close to the Pacific coast in summer, at around 26 degrees in summer.

    I think that it's possible that this eddy is partially responsible for last winter's strong early snow season in central Japan, but possibly also the cause of the early warming in late Feb and through March.
     
    LMB likes this.
  16. LMB

    LMB Old but definitely not Crusty!
    Ski Pass - Gold

    Joined:
    May 6, 2010
    Messages:
    22,276
    Likes Received:
    9,505
    That’s an interesting thought. :thumbs:
    It was a very definite start and finish last season. I got told off for calling it “essentially over” in early March, but it just felt like April/May.
     
  17. Sandy

    Sandy Dark Sith Lord of the Pool Room
    Moderator Ski Pass - Gold

    Joined:
    Jan 1, 1998
    Messages:
    61,326
    Likes Received:
    8,074
    Nagoya forecast for the next week:
    37,38,37,36,36,36,36
    And 36.9 yesterday, and 38 today.

    Nearby in Gifu, Tajimi backed up a 38.7 yesterday, with a 39.0 today.

    It's possible that we could see a 40 sometime this week.... the humidity is a killer.
     
  18. Crispy013

    Crispy013 One of Us

    Joined:
    Jun 6, 2010
    Messages:
    1,294
    Likes Received:
    1,389
    Sounds like horrible conditions. Give me 40 and 5% humidity over 28 and 100% humidity. Yikes.
     
    skichanger and Sandy like this.
  19. Sandy

    Sandy Dark Sith Lord of the Pool Room
    Moderator Ski Pass - Gold

    Joined:
    Jan 1, 1998
    Messages:
    61,326
    Likes Received:
    8,074
    I'd even take 40 and 5% humidity over 32 & 65%
     
    skichanger likes this.
  20. Nozawaman

    Nozawaman A Local
    Ski Pass - Gold

    Joined:
    Nov 7, 2002
    Messages:
    6,084
    Likes Received:
    1,965
  21. Sandy

    Sandy Dark Sith Lord of the Pool Room
    Moderator Ski Pass - Gold

    Joined:
    Jan 1, 1998
    Messages:
    61,326
    Likes Received:
    8,074
    FIFY :p
     
  22. Sandy

    Sandy Dark Sith Lord of the Pool Room
    Moderator Ski Pass - Gold

    Joined:
    Jan 1, 1998
    Messages:
    61,326
    Likes Received:
    8,074
    Here in Yokohama:
    8am: 29.3C, 76% humidity.
     
  23. hotsaki

    hotsaki One of Us
    Ski Pass - Silver

    Joined:
    Aug 10, 2010
    Messages:
    1,187
    Likes Received:
    324
    Here in Darwin 30C and 30 % humidity.Wet season can be 36C and up to 99% humidity.But we find it toughens us up and gets us ready for the cold.Plus we have cold beer in the fridge
     
    mannyk likes this.
  24. DeskRider

    DeskRider One of Us
    Ski Pass - Silver

    Joined:
    Jan 13, 2011
    Messages:
    2,160
    Likes Received:
    3,180
    I can almost smell the salaryman sweat from here
     
    Sandy likes this.
  25. Sandy

    Sandy Dark Sith Lord of the Pool Room
    Moderator Ski Pass - Gold

    Joined:
    Jan 1, 1998
    Messages:
    61,326
    Likes Received:
    8,074
    Can be same here in Japan....
    But average max for Darwin in the rainy season seems to be about 30C, and 70% humidity at 3pm.
    So far the average max this July in Tokyo is 32.1C, while the long term average for first half of July is normally around 28C.
    Yesterday, Tokyo got to 34.8, minimum humidity, 66%.
    This is more like August than July. I wonder what it will be like next month!!

    Even Nagano city has averaged 31.5C(418m elevation), and Matsumoto 31.2C (610m) in July.
    Nagano city yesterday, 34.8C, and Matsumoto 35.0C.
    Hakuba (703m) had a top of 31.9C yesterday. Nozawa Onsen 31.5C.

    You can see why the snow melts down to nothing so quickly in Japan!!!!
     
    hotsaki likes this.
  26. Sandy

    Sandy Dark Sith Lord of the Pool Room
    Moderator Ski Pass - Gold

    Joined:
    Jan 1, 1998
    Messages:
    61,326
    Likes Received:
    8,074
    Well, Tajimi got to 40.7C at 2:30pm today!!!
    Nearby Mino got to 40.6
     
  27. Claude Cat

    Claude Cat On my bike
    Moderator Platinum Pass

    Joined:
    Jul 6, 2001
    Messages:
    101,173
    Likes Received:
    37,508
  28. Sandy

    Sandy Dark Sith Lord of the Pool Room
    Moderator Ski Pass - Gold

    Joined:
    Jan 1, 1998
    Messages:
    61,326
    Likes Received:
    8,074
    That's only 0.3 degrees short of the all time official record in Japan!!
     
    Trail Blazer likes this.
  29. Claude Cat

    Claude Cat On my bike
    Moderator Platinum Pass

    Joined:
    Jul 6, 2001
    Messages:
    101,173
    Likes Received:
    37,508
    Humidity?
     
  30. Sandy

    Sandy Dark Sith Lord of the Pool Room
    Moderator Ski Pass - Gold

    Joined:
    Jan 1, 1998
    Messages:
    61,326
    Likes Received:
    8,074
    It doesn't show humidity for Tajimi, but to the west if Gifu city(where it got to 39.6), it was "very low", at 34%.

    Here in Yokohama, it got to 33.8C, 65%.
    35.3 in Tokyo, 63%.
     
  31. mannyk

    mannyk One of Us
    Ski Pass - Gold

    Joined:
    May 13, 2014
    Messages:
    1,614
    Likes Received:
    523
    We left Darwin because of weather like that, but thats hotter... yuck.. We used to go fishing 2am 28 deg, and sweating putting ice in the esky. I think I will stick to Winter in Japan thanks.
     
  32. Sandy

    Sandy Dark Sith Lord of the Pool Room
    Moderator Ski Pass - Gold

    Joined:
    Jan 1, 1998
    Messages:
    61,326
    Likes Received:
    8,074
    If only I could..... ;)
     
  33. Claude Cat

    Claude Cat On my bike
    Moderator Platinum Pass

    Joined:
    Jul 6, 2001
    Messages:
    101,173
    Likes Received:
    37,508
    No fun.
     
  34. Sandy

    Sandy Dark Sith Lord of the Pool Room
    Moderator Ski Pass - Gold

    Joined:
    Jan 1, 1998
    Messages:
    61,326
    Likes Received:
    8,074
    Bloody relentless here in Japan.....

    Forecasts for the next 7 days:
    Tokyo: 35,35,36,37,36,35,34 (and minimums 27,27,27,27,26,27,26)
    Nagoya: 36,35,36,38,38,37,36
    Osaka: 37,35,35,37,37,37,37
     
  35. Trail Blazer

    Trail Blazer Part of the Furniture

    Joined:
    Jun 8, 2000
    Messages:
    10,302
    Likes Received:
    176
    These slow moving patterns in Japan and Europe at the moment are so different to anything we see in SE Australia. Usually just a few days then a front or wind change. None of this weeks-on-end stuff
     
  36. hotsaki

    hotsaki One of Us
    Ski Pass - Silver

    Joined:
    Aug 10, 2010
    Messages:
    1,187
    Likes Received:
    324
    Not so in northern Australia.Superb weather here at the moment.
     
    Trail Blazer likes this.
  37. Sandy

    Sandy Dark Sith Lord of the Pool Room
    Moderator Ski Pass - Gold

    Joined:
    Jan 1, 1998
    Messages:
    61,326
    Likes Received:
    8,074
    This is normal August weather in Japan, not July (well, maybe 2-3 degrees above a normal August). But pretty much it's between 29-35C every day in August, and never gets below 24 at night.

    The Kuroshio Current is mostly responsible for those consistent August temperatures, not the wind.
     
  38. LMB

    LMB Old but definitely not Crusty!
    Ski Pass - Gold

    Joined:
    May 6, 2010
    Messages:
    22,276
    Likes Received:
    9,505
    That’s pure evil.
     
  39. mannyk

    mannyk One of Us
    Ski Pass - Gold

    Joined:
    May 13, 2014
    Messages:
    1,614
    Likes Received:
    523
    Yes Im sure its lovely..... wait a couple of weeks...:D