Bob Thompson Peak is a summit in Cochise County, Arizona, United States.
Description Bob Thompson Peak is located south of the city of Sierra Vista on the boundary that Coronado National Memorial shares with Coronado National Forest. It is the second-highest point within the memorial which is administered by the National Park Service. The peak's slopes are covered by silk tassel, sumac, pointleaf manzanita, agave, yucca, and sotol.Plants, Coronado National Memorial Arizona, National Park Service, Retrieved 2024-11-03. Precipitation runoff from this peak's slopes drains east to the San Pedro River drainage basin. Topographic relief is significant as the summit rises above Ash Canyon in one mile (1.6 km). The nearest higher neighbor is Montezuma Peak, to the west-southwest. The mountain's toponym was officially adopted in 1959 by the U.S. Board on Geographic Names.United States Board on Geographic Names, Decisions on Names in the United States, Decision List No. 5902, 1959, page 4. Robert "Bob" Thompson was a long-time Forest Service ranger who collected data in 1924 for determining the commercial value of land in the Huachuca District of Coronado National Forest.Land Use History of the San Rafael Valley, Arizona (1540-1960), Diana Hadley, 1995, p. 121.Directory Forest Service, United States Forest Service, 1926, p. 19.The Forest Pioneer, 1926, p. 20.
Geology Bob Thompson Peak is composed of siliceous volcanic rock,Philip Thayer Hayes, Mesozoic Stratigraphy of the Mule and Huachuca Mountains, Arizona, U.S. Government Printing Office, 1970, p. A9. breccia, tuff, granite, hornfels, and limestone.Coronado National Memorial, Geologic Resources Inventory Report, National Park Service, August 2011. The mountain is located on the hanging wall of the regional, northwest-trending Cochise thrust fault. The movement of this fault transported Jurassic units of collapse-breccia from the Montezuma Caldera over younger Huachuca granite.
Climate According to the Köppen climate classification system, Bob Thompson Peak is located in a semi-arid climate zone with mild winters and hot summers. Summer starts off dry, but progressively gets wetter as the monsoon season approaches during the months of July and August. Summer nights are comfortably cool, and temperatures drop quickly after sunset. Winters are cold, but daytime highs are usually above freezing. Winter temperatures below are uncommon, though possible. This area receives less than of annual rainfall, and snowfall is generally light during the winter.
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Weather forecast: Bob Thompson Peak