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Continued surface hoar growth on Donner Summit

Location Name: E of Boreal ski area Region: Donner Summit Area Observation Date & Time: Sunday, December 9, 2018 - 13:15
Location: 39.337720, -120.340010 See map: CalTopo	Is this an Avalanche Observation?: No

Observation made by: Educator at Donner Summit Avalanche Seminars

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Description of Snow, Weather, and Avalanche Conditions:

Even though airT was +3 C snow still in trees with -5 and -6 C surface snow temps. Surface hoar continues to grow both in depth and individual crystal size. Either rollers or small loose wet visible across valley on Castle Pk S terrain under rocks. No other signs of unstable snow.

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Continued surface hoar growth on Donner Summit

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Continued surface hoar growth on Donner Summit

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