ニセコ雪崩情報 Niseko Avalanche Info

タグ: 雪崩

  • ニセコ雪崩情報第105号 Niseko Avalanche Info No.105

    山麓-2度降雪なし凍結　モイワ800m-3.7度東南東4.5m降雪なし　アンヌプリ1100m-6.1度 南東3.5m　ヒラフ花園-5.2度南南西12.4m　日本海弁慶岬南17m　神威岬東北東3m気圧1010hPa波高0.6m、

    朝鮮半島東岸の低気圧が近づき上空は南風が強い。寒気流入が続き山は凍結、新たな降雪はなく標高600m以下は融雪が進み日中は沢が増水する。霧の発生はないが雲にさえぎられて光線が弱く斜面が見にくい。リフトが動けば山頂ゲートは開けられる見込み、パトロールの指示に従うこと。パウダーは期待できない。雪面の変化が激しいのでコース外では慎重な滑走を。全層雪崩の危険を避けるため大沢や鉱山の沢の沢底にいてはならない。多雪地帯のニセコの全層雪崩はもし出れば大きい。雪崩は木を倒し地形を削って谷を一掃する。雪庇に乗ってはならない。思わぬところから突然崩壊する。亀裂転落に注意。亀裂は上からは見えない。立ち木衝突に注意。木には勝てない。ここでは事故防止のためにルールを設けている。ルールではロープを越えることを禁じている。立ち入りが禁止されている湯の沢を麓へのお帰りコースとして使ってはならない。繰り返せば再び事故が起きる。朝のゲレンデは堅い。天候急変に注意。良い一日を。

    Mountain base -2℃, no snowfall, frozen. Moiwa 800m: -3.7℃, ESE4.5m/s, no snowfall. Annupuri 1100m: -6.1℃, SE3.5m/s. Hirafu Hanazono: -5.2m/s, SSW12.4m/s. Coastal data: Benkei cape S17m/s, Kamui cape ENE3m/s, 1010hPa, 0.6m waves. 

    The low pressure system located east of the Korean peninsula is moving towards Japan and a southerly wind is picking up in the sky. The mountain has been frozen due to cold air inflow, no new snowfall and snowmelt will pick up below 600m and creeks will swell during the day. There is no fog, however sunlight is blocked by overcast clouds, making it difficult to see the slope surface. Peak gates are scheduled to open if the chairlifts can operate. Please follow the ski patrol’s instructions. There is no fresh snow and the slope condition is very tricky, please be careful when riding out of bounds. Stay away from the bottom of the valleys of O-sawa (Annupuri bowl) and Backbowl in order to avoid being caught in big glide avalanches. Glide avalanches can be massively destructive in Niseko as the snowpack is very thick. They can take down trees and change the terrain shape as they sweep down the whole valley. Don’t stand on top of cornices as they can collapse unexpectedly. Beware of glide cracks, they’re hard to see from above. Beware of hitting trees, they are stronger than you. The Niseko Rules have been implemented to prevent accidents, and the Rules restrict crossing boundary ropes. Do not use strictly off-limits Yu-no-Sawa as your homegoing route. A critical accident will eventually happen if you repeatedly break the Rules. The morning groomer is firm. Beware of sudden weather changes. Have a nice day. 

  • ニセコ雪崩情報第100号 Niseko Avalanche Info No.100

    山麓+4度雨　モイワ800m+1.2度南南西6.4m濃霧視界不良雨　見返り750m0度南3.7m濃霧視界不良雨　アンヌプリ1100m-0.2度西南西13.2m4時突風20m/s視界不良　ヒラフ花園1000m+0.4度南17.9m4時半突風27m/s視界不良　日本海弁慶岬西16m 5時7m 神威岬南西18m気圧992hPa波高1.4m午前5時前線通過、

    午前5時にサハリンの低気圧から延びる前線が通過、風は南から西に回り標高700m以上は午前中強風が続く。700m以下の雨は午前9時には上がる。亀裂から入った雨水と融雪水が地表を流れて全層雪崩が起こりやすくなっている。モイワボウル、見返りボウル、バックボウルや大沢ボウル、東尾根全域の斜面途中や谷底にいてはならない。全層雪崩は亀裂から発生が予測できるが亀裂のない斜面でも起こる。突然起こる雪崩の破壊力は非常に大きいので注意。立ち入り禁止の春の滝や湯の沢でも全層雪崩が頻発し始めている。特にまだ落ちていない湯の沢アンヌプリ側の斜面は近日中に雪崩が起こる可能性が高い。これらの場所には絶対に入ってはならない。雨で体が濡れる。ウールアンダーを着ることを勧める。濡れても唯一体温を保つ。自然相手のこのスポーツは厳しい。良い一日を。

    Mountain base +4℃, rain. Moiwa 800m: +1℃, SSW6.4m/s, thick fog, poor visibility and raining. Mikaeri 750m: 0℃, S3.7m/s, thick fog, bad vis, rain. Annupuri 1100m: -0.2℃, WSW13.2m/s (20m/s gusts @ 4am), poor visibility. Hirafu Hanazono 1000m: +0.4℃, S17.9m/s (27m/s@4am), bad visibility. Coastal data: Benkei capeW16m/s (7m/s@5am), Kamui cape SW18m/s, 992hPa, 1.4m waves. The cold front passed at 5am.

    The cold front from the low-pressure system in Sakhalin passed around 5am and the wind shifted from south to west. Windy conditions will persist above 700m elevation throughout the morning. The rain below 700m is forecasted to stop around 9am. The rain and thaw running down to the ground through the glide cracks could trigger glide avalanches. Stay away from valley bottoms and don’t stay on the slopes of Moiwa bowl, Miakeri bowl, Backbowl, Osawa bowl and Higashi-One. Glide avalanches can occur in slopes with or without existing cracks and are extremely destructive. Glide avalanches are already happening in strictly off-limits Yu no Sawa and Haru no Taki area. It is highly likely that one will occur in Yu no Sawa’s Annupuri side slopes in the near future. Nobody must enter these slopes. Wool baselayers are recommended as they will keep you warm even when wet. Nature can be punishing sometimes and that is why it makes this sport very demanding. Have a nice day.

  • ニセコ雪崩情報 第99号 Niseko Avalanche Information No.99

    山麓+2度降雪なし曇り　モイワ800m-2.2度南南東4.6m降雪なく曇り　見返り750m-2度東南東1.8m降雪なく曇り　アンヌプリ1100m-4.1度西南西6.4m降雪なく濃霧視界不良　ヒラフ花園1000m-3.7度南11.8m風強く降雪なし濃霧　日本海弁慶岬南南西4m　神威岬南17m気圧1003hPa波高1.6m、

    山麓は気温が上がり融雪が進むが標高700m以上は寒気流入が続き1000m以上は濃霧、ヒラフ側は南風が強くリフト運行調査中、ゲート開閉は未定、パトロールの指示に従うこと。コース外滑走は勿論、自己責任で行われる。しかしニセコではゲートの開閉を行い、可能な限りスキー場利用者の事故防止に努めている。全層雪崩の危険を避けるため谷底にいないこと。雪庇やノールを刺激して雪崩を起こさないこと。パトロールの目を盗み立ち入り禁止区域湯の沢を滑らないこと。次に事故が起これば常習者の責任が問われる。春は天気と雪質が変わりやすい。用心を。ビーコンはオンか? ショベルやプローブ、ショートロープはあるか? 登山や山岳滑走は素晴らしいスポーツだが常に危険が伴う。良い一日を。

    Mountain base +2℃, no snowfall, overcast. Moiwa 800m: -2,2℃, SSE4.6m/s, no snowfall, overcast. Mikaeri 750m: -2℃, ESE1.8m/s, no snowfall, overcast. Annupuri 1100m: -4.1m/s, WSW6.4m/s, no snowfall, thick fog poor visibility. Hirafu Hanazono 1000m: -3.7℃, S11.8m/s, strong wind, no snowfall, foggy. Coastal data: Benkei cape SSW4m/s, Kamui cape S17m/s, 1003hPa, 1.6m waves. 

    The temperature rose and snow is melting at the base, however cold air is flowing in above 700m and a thick fog lies above 1000m. Strong southerly wind is blowing in the Hirafu side and the chairlift operation is on standby. Gates opening is to be determined, please follow the ski patrol’s instructions. Of course, skiing out of bounds is at your own risk, however, in Niseko, gates will be shut/open from accidents prevention measures’ perspective. Stay away from the valley bottom to avoid being caught in glide avalanches. Do not stimulate cornices and knolls as they could trigger a slide. Do not sneak into strictly off-limits areas behind the back of the ski patrols. If an accident occurs in these areas again, the repeat offenders will be held liable. The weather and snow conditions change quickly in Spring time. Stay vigilant. Is your avalanche beacon switched on? Are you carrying a shovel, a probe and a short rope? Mountaineering and ski touring are wonderful sports, however everyone should be aware of the risk involved in them. Have a nice day.