Mount Bradley (Mount Jumbo)

Mount Bradley is a 3,337-foot (1,017 m) elevation mountain summit located on Douglas Island in the Alexander Archipelago, in the U.S. state of Alaska. It is the third-highest peak on the island, and is situated 4 mi (6 km) south of Juneau, on land managed by Tongass National Forest. Although modest in elevation, relief is significant since the peak rises up from tidewater of Gastineau Channel in approximately two miles. Its nearest higher neighbor is Mount Ben Stewart, 5.6 mi (9 km) to the northwest.

Mount Bradley
Mount Bradley, northeast aspect
Highest point
Elevation3,337 ft (1,017 m) [1]
Prominence1,756 ft (535 m) [1]
Parent peakMount Ben Stewart[1]
Isolation3.75 mi (6.04 km) [1]
Coordinates58°14′55″N 134°24′39″W [2]
Geography
Mount Bradley
Location of Mount Bradley in Alaska
LocationTongass National Forest
Juneau Borough
Alaska, United States
Parent rangeAlexander Archipelago[3]
Coast Mountains[2]
Topo mapUSGS Juneau A-2
Climbing
Easiest routeHiking 2.6 mile trail

History
F. W. Bradley

This geographic feature's name was originally published as "Jumbo Mountain" by U.S. Geological Survey in 1904, likely from the Jumbo Mine at its base. Mount Jumbo is another variant name still in common use. It was officially renamed Mount Bradley in 1939 in honor of Frederick Worthen Bradley (1863–1933), world-famous mining engineer.[4] He was president of the American Mining Institute, and in 1931 was awarded the Saunder Gold Medal for outstanding achievement in mining.[2] He was instrumental in developing the quartz mining areas of Gastineau Channel including the Treadwell gold mine and Alaska Juneau Mine, and contributed toward the development of the communities of Juneau and Douglas.[5] This geographic feature's name was officially adopted in 1939 by the U.S. Board on Geographic Names.

Climate

Based on the Köppen climate classification, Mount Bradley has a subarctic climate with cold, snowy winters, and mild summers.[6] Weather systems coming off the Gulf of Alaska are forced upwards by the Coast Mountains (orographic lift), causing heavy precipitation in the form of rainfall and snowfall. Temperatures can drop below −20 °C with wind chill factors below −30 °C. This climate supports the Juneau Icefield to the mountain's northeast. The month of July offers the most favorable weather for viewing and climbing Mount Bradley.

See also
  • Mt. Bradley (aka Jumbo) and Douglas Island seen from Juneau

References
  1. "Bradley, Mount - 3,337' Alaska". listsofjohn.com. Retrieved 2020-03-28.
  2. "Mount Bradley". Geographic Names Information System. United States Geological Survey. Retrieved 2020-03-28.
  3. "Mount Bradley, Alaska". Peakbagger.com. Retrieved 2020-03-28.
  4. Dictionary of Alaska Place Names, Donald J. Orth author, United States Government Printing Office (1967), page 158
  5. http://www.juneau.org/history/treadwel.php
  6. 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.
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