Professional Observation
Basic Information
Observation Details
Observation Date:
January 26, 2023Submitted:
January 27, 2023Observer:
Geoff Unger | Key ObserverZone or Region:
Mammoth LakesLocation:
Sherwin Creek Surface Crust, Surface Facets and Surface HoarSigns of Unstable Snow
Recent Avalanches?
None ObservedCracking?
None ExperiencedCollapsing?
None ExperiencedKey Points
Crisp temperatures in the morning gave way to milder conditions in the afternoon.
- Wind texture and tracks were visible everywhere in the Sherwins including what appears to be a skin track going up the Main Bardini Chute
- Surface Crusts and Surface Facets were present everywhere, but with only isolated areas of soft snow without a crust in sheltered areas.
- Surface Hoar up to 3mm was observed in flat terrain at the base of the approach ridge to Mirkwood area, but it was only in small pockets as opposed to being widespread.
Field Weather Observation
|
Location |
Sherwin Creek |
|
Time |
10:30 |
|
Elevation |
7900 |
|
Aspect |
N |
|
Sky |
Few |
|
Tair/Tsurf/T20 |
4.0/-6.5/-9.0 |
|
Precipitation Type/Rate |
No |
|
Wind |
L->SE |
|
Blow Snow |
None |
|
Surface Form/Size |
FC 1mm SH 2-3mm |
|
HST |
0 |
|
HS |
240 |
|
Pen Boot/Pen Ski |
20/5 |
|
Comments |
Combo of Facets and Surface Hoar. More Facets with smaller panels of SH |
Media
