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SIMPLE OBSERVATION FORM
 Date: 03.29.18
 Location:  4th of July Zone/Region:  other - White Clouds
 Activity:   Snowmobile
AVALANCHE OBSERVATIONS
 How Many?  Several
 Trigger:   Natural
 What type of avalanches?   Soft Slab, Wet Loose, Wet Slab
 What size?
 Size 1: Relatively harmless to people
 Size 2: Could bury, injure, or kill a person
 Size 3: Could bury and destroy a car, damage a truck, destroy a wood frame house, or break a few trees
 Size 4: Could destroy a railway car, large truck, several buildings, or a substantial amount of forest
 What Elevation?  9,000ft. and above. mostly alpine
 What Aspect?   N, NE, E, SE, S, SW, W, NW
 Comments: Observed avalanche activity on all slopes, above 9,000ft. Ranging from wet loose, wet slab, natural wind slabs, all dependent on aspect/elev.

The largest one in particularthat we saw had a Crown at 9,700ft, West facing, multiple levels of crowns, some crown heights appeared to be 10-15ft high possibly 20ft in spots, broke thousand feet wide if not more, and ran (300-800ft plus some) long depending on terrain.
MESSAGE
 Comments: Accessed high elevation cirques/bowls in the 4th of July Basin, White Cloud Mtns, and observed avalanche activity on all aspects. From wet loose, to natural wind slabs, all varying due to aspects.

Warm spring day kept us cautious of traveling below areas where wet slides could bury us in terrain traps. Mostly played in low angle terrain and found pockets of soft snow on shaded north facing slopes, once again taking note of what was below and above us in those zones.
Many wet slides let loose throughout the day, as expected.
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