ニセコなだれ情報 第8号 Niseko Avalanche Info No.8

Date:
December, 13th 2018

山麓6-6度風よわく晴れ、12時間の降雪10cm、モイワ700m-6度風弱く降雪わずか、ふきだまりの発達なし、視界良、弁慶岬東6m、神威岬北東3m気圧1018hPa波高1.4m

 

ニセコ山系西側は東側にくらべて降雪少、気圧の傾きゆるく海、山ともにおだやか。羊蹄山麓標高300m以下では寒冷晴天による表面霜を形成。1213日層が作られる見込み。

南側崖斜面標高700m、リフト線下標高600m付近では霜系の1211-12層から厚さ30cm以内で破断しやすいので40度斜面では注意。全体の雪崩リスクは低い。

 

藪は埋まっておらずコース外は滑走不適。ゲートが開くのはまだ先になる。圧雪されたゲレンデは素晴らしく良いがコース脇は荒れている。転倒、立木衝突に注意。木には勝てない。

冬型の気圧配置が強まれば再び吹雪いて雪が増える。今はそれを待つしかない。

 

良い一日を。

 

Mountain Base 6.00am: -6°, light winds, sunny, 10cm new snow in last 12 hours. Moiwa 700m: -6°, light winds, trace new snowfall,no snowdrift development, good visibility. Coastal data: Benkei Cape: E6m/s. Kamui Cape: NE3m/s, 1018hPa, wave 1.4m.

 

The sea and mountains are calm again today and the atmospheric pressure gradient remains shallow. The east side of the niseko mountains has received a little more snow than the west side. Below 300m at Mt Yotei base a hoar frost layer has formed. This Dec 13th layer is expected to be notable in future snowpack. On south facing steep slopes around 700m and lift lines around 600m, fractures up to 30cm from Dec 11th-12th frost layer are easily occurring. Be careful on 40deg slopes. The general avalanche risk is low.

 

Off the groomed runs trees and bushes are still uncovered making out of bounds areas unsuitable to ride. The gates will remain closed for a while longer. The groomers are in fantastic condition. Off the groomers - not so good. Beware falling and hitting trees, you can never win. A winter weather pattern will get stronger, sending wind and more into Niseko soon. Just have to wait a bit now.

 

Have a good day.



For more information visit Niseko Avalanche Information.

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