Three Brothers (Washington)

Last updated
Three Brothers
Three Brothers from Etienne Creek pass.jpg
West-southwest aspect
Highest point
Elevation 7,303 ft (2,226 m) [1]
Prominence 1,743 ft (531 m) [1]
Parent peak McClellan Peak (8,364 ft) [2]
Isolation 3.28 mi (5.28 km) [2]
Coordinates 47°25′24″N120°46′32″W / 47.4232667°N 120.7756712°W / 47.4232667; -120.7756712 [1]
Geography
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Three Brothers
Location of Three Brothers in Washington
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Three Brothers
Three Brothers (the United States)
Location Chelan County
Washington, U.S.
Parent range Wenatchee Mountains
Cascade Range
Topo map USGS Enchantment Lakes
Climbing
Easiest route class 2 hiking

Three Brothers is a 7,303-foot-elevation (2,226 meter) triple-peak mountain summit located in Chelan County of Washington state. [3] It is situated 1.3 miles east of Navaho Peak, on the boundary of the Alpine Lakes Wilderness, on land managed by Wenatchee National Forest. Three Brothers is the third-highest point in the Teanaway area of the Wenatchee Mountains. [1] Precipitation runoff from the peak drains into tributaries of the Wenatchee River. The view from the summit of this peak showcases the impressive Mount Stuart and Stuart Range for those who climb it.

Contents

Climate

Lying east of the Cascade crest, the area around Three Brothers is drier than areas to the west. Summers can bring warm temperatures and occasional thunderstorms. Most weather fronts originate in the Pacific Ocean, and travel east toward the Cascade Mountains. As fronts approach, they are forced upward by the peaks of the Cascade Range, causing them to drop their moisture in the form of rain or snowfall onto the Cascades (Orographic lift). As a result, the eastern slopes of the Cascades experience lower precipitation than the western slopes. 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. [4]

Geology

The Alpine Lakes Wilderness features some of the most rugged topography in the Cascade Range with craggy peaks and ridges, deep glacial valleys, and granite walls spotted with over 700 mountain lakes. [5] Geological events occurring many years ago created the diverse topography and drastic elevation changes over the Cascade Range leading to the various climate differences. The elevation range of this area is between about 1,000 feet (300 m) in the lower elevations to over 9,000 feet (2,700 m) on Mount Stuart.

The history of the formation of the Cascade Mountains dates back millions of years ago to the late Eocene Epoch. [6] With the North American Plate overriding the Pacific Plate, episodes of volcanic igneous activity persisted. [6] In addition, small fragments of the oceanic and continental lithosphere called terranes created the North Cascades about 50 million years ago. [6]

During the Pleistocene period dating back over two million years ago, glaciation advancing and retreating repeatedly scoured and shaped the landscape. [6] The last glacial retreat in the Alpine Lakes area began about 14,000 years ago and was north of the Canada–US border by 10,000 years ago. [6] The U-shaped cross section of the river valleys is a result of that recent glaciation. Uplift and faulting in combination with glaciation have been the dominant processes which have created the tall peaks and deep valleys of the Alpine Lakes Wilderness area.

See also

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Cape Horn is a 7,316-foot (2,230-metre) mountain summit located in Chelan County of Washington state. Cape Horn is situated 12 mi (19 km) west-northwest of Leavenworth, within the Alpine Lakes Wilderness, on land managed by the Okanogan–Wenatchee National Forest. Cape Horn is part of the Chiwaukum Mountains, a subset of the Cascade Range. Its nearest higher neighbor is Ladies Peak, 0.9 mi (1.4 km) to the northwest, and Grindstone Mountain is set 1.4 mi (2.3 km) to the south. Precipitation runoff from Cape Horn drains west to Icicle Creek, whereas the east slopes drain into Chiwaukum Creek, and both are tributaries of the Wenatchee River. Although modest in elevation, relief is significant since this peak rises over 4,300 feet above Icicle Creek Valley in approximately two miles. This mountain was named by Albert Hale Sylvester in 1909 for its sharp profile.

<span class="mw-page-title-main">Big Jim Mountain</span> Mountain in Washington (state), United States

Big Jim Mountain is a 7,763-foot (2,366-metre) mountain summit located in Chelan County of Washington state. It is situated 9 mi (14 km) northwest of Leavenworth, within the Alpine Lakes Wilderness, on land managed by the Okanogan–Wenatchee National Forest. Big Jim Mountain is the fourth-highest peak in the Chiwaukum Mountains, a subset of the Cascade Range. Its nearest higher neighbor is Big Lou, 1.75 mi (2.82 km) to the south-southwest, and Cape Horn is set 4 mi (6.4 km) to the west. Precipitation runoff from Big Jim drains into tributaries of the Wenatchee River. Although modest in elevation, relief is significant since Big Jim rises 2,300 feet above Painter Creek Valley in one mile. Big Jim Mountain is named for Jim Whittaker, the first American to summit Mount Everest and twin brother of Lou Whittaker.

<span class="mw-page-title-main">Wedge Mountain (Washington)</span> Mountain in Washington (state), United States

Wedge Mountain is a 5,860-foot-elevation (1,786-meter) summit located in Chelan County of Washington state. It is set on the boundary line of the Alpine Lakes Wilderness, on land managed by Okanogan-Wenatchee National Forest. Wedge Mountain is the northeastern terminus of the Stuart Range, which is a subset of the Cascade Range. It is situated 3.5 miles (5.6 km) northeast of The Temple, and the nearest town is Leavenworth, 5 miles (8.0 km) to the north-northeast. Precipitation runoff from the mountain drains into tributaries of the Wenatchee River. Topographic relief is significant as the summit rises over 2,800 feet above Snow Creek in one-half mile. Backpackers hiking en route to The Enchantments via the Snow Creek Trail traverse the western foot of this mountain. Wedge Mountain is the toponym officially adopted by the U.S. Board on Geographic Names for the 5,860-foot summit.

References

  1. 1 2 3 4 "Three Brothers, Washington". Peakbagger.com.
  2. 1 2 "Three Brothers, West - 7,303' WA". listsofjohn.com. Retrieved 2021-06-19.
  3. "Three Brothers". Geographic Names Information System . United States Geological Survey, United States Department of the Interior . Retrieved 2021-06-19.
  4. Beckey, Fred W. Cascade Alpine Guide, Climbing and High Routes. Seattle, WA: Mountaineers Books, 2008.
  5. Smoot, Jeff (2004). Backpacking Washington's Alpine Lakes Wilderness. Helena, Montana: The Globe Pequot Press.
  6. 1 2 3 4 5 Kruckeberg, Arthur (1991). The Natural History of Puget Sound Country. University of Washington Press.