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SIMPLE OBSERVATION FORM
 Date: 04.19.17
 Location:  Horstmann Peak - northeast cirque Zone/Region:  Sawtooth Mountains
 Activity:   skiing
AVALANCHES TRIGGERED
 Was it intentional?  yes
 What type of avalanches?   Soft Slab
 What size?
 Size 1: Relatively harmless to people
 Size 2: Could bury, injure, or kill a person
 What Elevation?  alpine
 What Aspect?  NE
 Comments: We triggered a soft slab at the top of the Sickle. Appeared to be Monday night's snow peeling off (triggered on Tuesday).
AVALANCHE OBSERVATIONS
 How Many?  many
 Were they?  Natural
 What type of avalanches?   Loose Dry (sluff), Loose Wet
 What size?
 Size 1: Relatively harmless to people
 Size 2: Could bury, injure, or kill a person
 What Elevation?  alpine and mid elevations
 What Aspect?  NE, E
MESSAGE
 Comments: Toured 4/17-19. Some fresh snow each day. Skiing was good on north aspects above 7500'.  Marginal elsewhere with warm spring refresh on top of melt freeze.  We were able to trigger R2 wind slabs at the top of the Sickle, nowhere else.  Seemed it was just Monday's night's storm snow peeling, old snow held up great everywhere else.  We did witness a great natural cycle in the Profile Basin during Tuesday's warming: Size 1 to 2 dry loose early in the day, then size 2 wet loose on ENE between 7500-9000.  Skiing on north aspects was stable through this.

Also, as you might expect, 
AS-R2-D2-Wet-O on isolated southerly aspects around 7000'.
FILE ATTACHMENTS

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