Avalanche

JFS Canyon

Adam ClarkFlathead Range & Glacier NP
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Quick report

• Widespread wet loose avalanche activity today with sizes ranging from destructive size 1-2 (D1-2). • Freezing levels climbed throughout the day and the avalanche activity crept upwards in elevation while trending towards larger magnitude events. • Visibility was limited, but crowns of recent slab avalanches were observed on the north face of Devils Hump and on the south face Little Dog Mtn and possibly on Nyack Mtn in the Cascadilla basin.

Weather

Cloud Cover
overcast
Rain Elevation
6000
Recent Snowfall
0

• Rain began around midnight last night and became heavier by mid-day. Rainfall totals on the Canyon floor have reached about 1.00”. • The rain/snow line was at about 5000’ at 1000 hrs and then rose to near 6000’ by sundown. • Calm or light winds from the SW on the Canyon floor with moderate SW winds above 6000’. • Daytime high temperatures reached the high-30s °F on the Canyon floor. Weather stations at 6400’ reached 32 °F.

Avalanche

Size
D1.5 R2
Type
WL
Count
5
Aspect
E
Trigger
N
Elevation
3600 ft

Several WL avalanches here. A few put a small amount of debris on the Hwy.