Mount Thiassi

Mount Thiassi is a 2,772-metre (9,094-foot) mountain summit located in the Thiassi Range of the Coast Mountains, in southwestern British Columbia, Canada. It is the third-highest point in the Thiassi Range.[3] Mount Thiassi is situated 56 km (35 mi) northwest of Pemberton, and 6.9 km (4 mi) south-southwest of Mount Vayu, which is its nearest higher peak. Precipitation runoff from the peak and meltwater from unnamed glaciers on its slopes drain into tributaries of the Lillooet, Bridge, and Hurley Rivers. The first ascent of the mountain was made in 1965 by Dick Culbert and Alice Purdey. The mountain's name was submitted by this first ascent party to commemorate Thiassi, the god of storms according to Norse mythology.[4] The name was officially adopted June 22, 1967, by the Geographical Names Board of Canada.[2]

Mount Thiassi
Mount Thiassi, southeast aspect
Highest point
Elevation2,772 m (9,094 ft) [1]
Prominence562 m (1,844 ft) [1]
Parent peakMount Vayu (2794 m)[1]
Coordinates50°42′52″N 123°10′58″W [2]
Geography
Mount Thiassi
Location in British Columbia
Mount Thiassi
Mount Thiassi (Canada)
LocationBritish Columbia, Canada
Parent rangeThiassi Range
Coast Mountains
Topo mapNTS 92J/11
Climbing
First ascent1965 Dick Culbert, Alice Purdey[1]
Easiest routeScrambling from south [1]

Climate

Based on the Köppen climate classification, Mount Thiassi is located in a subarctic climate zone of western North America.[5] Most weather fronts originate in the Pacific Ocean, and travel east toward the Coast Mountains where they are forced upward by the range (Orographic lift), causing them to drop their moisture in the form of rain or snowfall. As a result, the Coast Mountains experience high precipitation, especially during the winter months in the form of snowfall. Temperatures can drop below −20 °C with wind chill factors below −30 °C. The months July through September offer the most favorable weather for climbing Thiassi.

References
  1. "Mount Thiassi". Bivouac.com. Retrieved 2019-11-30.
  2. "Mount Thiassi". Geographical Names Data Base. Natural Resources Canada. Retrieved 2019-11-30.
  3. "Mount Thiassi, British Columbia". Peakbagger.com. Retrieved 2019-11-26.
  4. "Mount Thiassi". BC Geographical Names.
  5. Peel, M. C.; Finlayson, B. L.; McMahon, T. A. (2007). "Updated world map of the Köppen−Geiger climate classification". Hydrol. Earth Syst. Sci. 11. ISSN 1027-5606.

See also
Thiassi Range with Mount Sampson (left), Sessel Mountain (middle), and Mount Thiassi (right). Viewed from Grouty Peak
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