McCartney Peak was in the late 19th century known as "Lillian Peak," and nearby Windfall Peak was originally named McCartney Peak, for a trapper known as "Old Man McCartney" who frequented this area.[5] Over the subsequent years, mapping errors resulted in present-day names and locations.
Climate
Based on the Köppen climate classification, McCartney Peak is located in the marine west coast climate zone of western North America.[6]Weather fronts originating in the Pacific Ocean travel northeast toward the Olympic Mountains. As fronts approach, they are forced upward by the peaks (orographic lift), causing them to drop their moisture in the form of rain or snow. As a result, the Olympics experience high precipitation, especially during the winter months in the form of snowfall.[7] Because of maritime influence, snow tends to be wet and heavy, resulting in avalanche danger. During winter months weather is usually cloudy, but due to high pressure systems over the Pacific Ocean that intensify during summer months, there is often little or no cloud cover during the summer.[7] The months July through September offer the most favorable weather for viewing or climbing this mountain.[1]
Geology
The Olympic Mountains are composed of obductedclastic wedge material and oceanic crust, primarily Eocenesandstone, turbidite, and basaltic oceanic crust.[8] The mountains were sculpted during the Pleistocene era by erosion and glaciers advancing and retreating multiple times.
^Parratt, Smitty (1984). Gods and Goblins: A Field Guide to Place Names of Olympic National Park (1st ed.).
^Peel, M. C.; Finlayson, B. L.; McMahon, T. A. (2007). "Updated world map of the Köppen−Geiger climate classification". Hydrol. Earth Syst. Sci. 11: 1633–1644. ISSN1027-5606.
^ abMcNulty, Tim (2009). Olympic National Park: A Natural History. Seattle, Washington: University of Washington Press.
^Alt, D.D.; Hyndman, D.W. (1984). Roadside Geology of Washington. pp. 249–259. ISBN0-87842-160-2.