雪崩ハザード評価の登録
Observer Richard Smith
Posted At：2019/04/13 16:22
RangeMyoko/Togakushi Mountain大毛無山 Locationアライスキー場
Observation At：2019/04/13
Elevation350m〜1350m
Co-workerDave Iles
観察データ
気象データ
Temp. 3.5(0800hrs / 950m) 〜 6.9(1400hrs / 950m)
天気
午前FEW 雲量1-3
午後FEW 雲量1-3
降水種類
午前Nil なし
午後Nil なし
降水強度
午前
午後
HST
HS Range
風速
午前L 1-7m/s
午後L 1-7m/s
風向
午前SE
午後SE
飛雪
気象コメント Clear overnight & in morning
雪崩データ
Avalanche Observations Multiple Na LW size 1 - 2 on E/SE aspects 900m - 1100m outside of resort boundary. Starting in 45°+ terrain. Ski cut stubborn LW size 1 on SE aspect at 1050 on 35° terrain. Size 2 glide slab from E facing cliffs at 900m outside of resort boundary.
Avalanche Activities_Yes or No Yes
シューティングクラック No
積雪データ
重要な層と弱層とテスト結果
Snowpack Melt freeze cycle continued with strong MFcr on all aspects at all elevations in morning. This crust broke down during day everywhere but N aspects above 1000m. Upper 10 - 20cm became wet & 4f/F hardness on E & SE aspects. Upper snowpack firmer (P) and unreactive in all other areas.
Comments
Picture is Na LW Sz 1.5 at 1100m, outside current ski area boundary.
現地画像
