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ニセコなだれ情報 第87号 Niseko Avalanche Info No.87

山麓6時-2度降雪なし、モイワ800m-5.3度北北西5.76m/s雪庇ふきだまり発達わずか、アンヌプリ1120積雪深250cm1100m-8.7度西4.90m/s、ヒラフ山頂-8度1000m-8.4度北北東3.70m/s降雪なし、水野の沢-6.64度西北西5.5m/s降雪なし山麓積雪深144cm、アメダス倶知安-0.8度西2.3m/s積雪深143cm、海上弁慶岬北北西10m/s、神威岬北西7m/s気圧1014hPa波高2.0m、

 

等圧線幅が時々狭まり上空の風はやや強い。降雪はないが標高700m以上は寒いため融雪は進んでいない。日中の気温上昇で600m以下では沢の側壁やリフト線下が落ちやすくなるので注意。標高800m以上は飛雪で浅く雪が入っているが硬い。トラック跡に板を取られやすいので注意。観察から全体の雪崩リスクは低い。各ゲートは朝から開けられる予定。準備してパトロールの意見を聞きコース外へ出ること。沢底や雪庇斜面では常に用心を。斜面途中の亀裂は上から見えないので注意。山では常に慎重な行動を。再びパウダーが来ることを願っている。良い週末を。

 

Mountain base 6am: -2, no snowfall. Moiwa800m: -5.3, NNW5.76m/s, light development of snowdrifts and cornices. Annupuri1120m: snow depth 250cm, 1100m: -8.7, W4.90m/s. Hirafu peak: -8, 1000m: -8.4, NNE3.70m/s, no snowfall. Mizuno no Sawa: -6.64, WNW5.5m/s, no snowfall, 144cm snow depth at the base. Kutchan weather station: -0.8, W2.3m/s, 143cm snow depth. Benkei cape: NNW10m/s, Kamui cape: NW7m/s, 1014hPa, 2.0m waves.

 

The isobars spacing got tight and the wind in high elevation is moderately strong. There were no snowfall, however the temperature remains low and the the snow hasn’t started melting above 700m elevation. Loose snow slides are to be expected in gullies and slopes under chair-lifts below 600m elevation as the tenperature rises during the day. Some wind-blown snow deposit is present above 800m elevation, however is shallow and firm right underneath. Beware of old tracks. The general avalanche risk is low and all gates are scheduled to open from the morning. Be well prepared and ask the ski patrol some advice before stepping out of the gates. Always be vigilant in valley bottoms and cornice slopes. Cracks are opening and are difficult to notice from above. Be humble and cautious in the mountains. Pray for some new snow.

Have a nice weekend.

| - | 07:53 | - | - | pookmark |